Abstract strategy game - Wikipedia

Abstract strategy game - Wikipedia
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Mental skill based games
Various historical abstract strategy games on display in Spanish
Renaissance fair
Abstract strategy games
are games like
chess
draughts
and
Go
. They are typically
strategy games
with minimal or no
narrative theme
, an outcome determined mostly by player choice (with minimal or no
randomness
), and in which there is little to no hidden information. Many abstracts are also
perfect information
games.
Pure abstract strategy games are typically
deterministic
, fully observable, and governed by simple, explicit rules whose strategic depth arises from combinatorial complexity rather than chance. Abstract strategy games are also games of analytical
skill
, usually with significant depth or
strategic complexity
. Skill grows over time as players develop experience, and a greater understanding of a specific game. Experienced players with greater ability to analyze multiple moves in advance will almost always beat beginners at abstract strategy games.
There are numerous types of abstract strategy games, from pure strategy to mixed strategy games that may have elements of random or hidden information.
Go
Pente
and
checkers
are "pure" abstract perfect information games since they perfectly fulfill all three criteria;
Chess
games,
Tafl games
and
Hive
feature recognizable themes (though they are highly stylized or minimalistic);
Stratego
is a borderline or exception case, since it is deterministic, loosely based on
Napoleonic warfare
, and features some concealed information.
Furthermore, some games with elements of chance, like
backgammon
and
pachisi
, may also be considered abstract strategy games, though there is disagreement on this issue among
ludologists
. However, since they contain an element of luck and
randomness
, they are not "pure" abstract strategy games.
Several traditional abstract strategy games like Chess and Go have a long history and are culturally significant products that have been played for generations in various regions of the world. Beyond entertainment, abstract strategy games have served as educational tools to teach
logic
patience
and
foresight
. They have also served as
status symbols
for the
intelligentsia
and elite classes, and as competitive
mind sports
. For example, during the
Cold War
, Chess matches were seen as intellectual battles between East and West.
Definition
edit
The first 150 moves of a game of
Go
The term
abstract
refers to a game’s formal detachment from representational content and theme, rather than any
artistic style
or inscrutability. While pieces in abstract games may have conventional names (e.g., “
king
,” “stone,” “
pawn
”), these labels do not imply a
simulation
of historical, physical, or fictional realities. In cases that the piece design resembles a theme, it is purely for aesthetic reasons, remaining unimportant to game play.
A related element of an abstract game is
simplicity
. Most abstract games have a simpler rules and mechanics in comparison to more complicated games like
war games
and other
simulation games
. Similarly, even if an abstract game has a theme, it is often simple and minimalistic, and has no necessary logical connection to the game mechanics (unlike most modern
Eurogames
). Thus, an abstract game's play is centered on spatial and geometric relations, move rules, and logical consequences within a closed system.
The term
strategy
meanwhile indicates that game outcomes depend primarily on players’ decisions over extended sequences of choices and moves, rather than on reflexes, dexterity,
bluffing
, guessing,
collecting
, negotiation, or probabilistic events.
Another aspect of abstract strategy games is that the game elements are all self-contained in the game pieces, parts and rules. Playing the game does not rely on anything external to the game, like physical skill and
dexterity
, knowledge of language (as in
word games
), or any other kind of specific knowledge (as in
trivia games
).
A further trait shared by the majority of abstract strategy games is a spatial or geometric element, often based on a board of
tessellated
regular
polygons
The formal definition of an "abstract strategy" game is often debated, but several key elements are shared by most games in this family:
Close to perfect Information:
Little to nothing is hidden from all players, and all players can see the entire state of the board, pieces and all other game elements at all times.
Little to no randomness:
There are usually no dice rolls, shuffled decks, or random events. The "input randomness" is close to zero, and the game's complexity arises from the players' moves and position.
Minimal theme and narrative:
While some games have minimal "themes" (e.g., Chess represents a stylized medieval court or battle), the mechanics do not rely on this or on any narrative element. The game would function identically if the pieces were replaced with simple geometric shapes.
Discrete turn structure:
Game play proceeds in alternating turns, with clearly defined legal moves.
Strategic focus:
Game play is largely based on
spatial reasoning
pattern recognition
, and
strategic planning
Many abstract strategy games that closely follow the above principles also happen to be pure strategy games, also known as "
combinatorial
" games in which there is
no hidden information
, no random elements, no simultaneous or hidden movement or setup. Many of these are also two player games where two players or teams take a finite number of alternating
turns
until a win condition is met. According to
Combinatorial Game Theory
(2013) by Aaron Siegel, "combinatorial" games have no randomness, no any hidden information, or any simultaneous moves.
Winning at these "pure" abstract strategy games relies on pure skill in logic, spatial thinking, and calculation. Furthermore, as Cesco Reale writes, combinatorial or pure abstracts are games in which, "given a game situation and sufficient calculation or reflection time, a player or a fairly powerful calculator can analyze the tree of possible games (up to a defined depth of analysis and with respect to a given evaluation function) and identify the best move (or the set of best moves with equal merit)."
A game of
Tigris and Euphrates
, a tile laying strategy game with a
Mesopotamian
theme
A four-player game of
Azul
Nevertheless, some abstract strategy games have thematic elements in their design, such as
Tigris and Euphrates
, though this is often a non-essential element, and could be replaced with totally different themes without changing the core of the game. Furthermore, some abstract games like
Azul
do have elements of chance, and these may still classified as abstract strategy games.
However, these games are not "pure" strategy, but "mixed" or "hybrid" strategy games. This issue is debated among game designers and ludologists, depending on how strict their definition of "abstract strategy" is, and whether it must be purely combinatorial. Thus, the term abstract strategy game can refer to a
superset
of pure strategy games which also includes games that do not perfectly fit the definition of combinatorial games but are still very close, since strategic choice remains the most important element.
Thus, according to Cesco Reale, this broader definition of abstract strategy includes mixed abstract strategy games like "
Backgammon
(which has chance),
Chinese Checkers
with more than 2 players (which has possible alliances), 55stones (which has simultaneous moves), or Stratego (which has hidden information).
According to J. Mark Thompson, abstract play is sometimes said to resemble a series of
puzzles
the players pose to each other:
There is an intimate relationship between such games and puzzles: every board position presents the player with the puzzle, What is the best move?, which in theory could be solved by logic alone. A good abstract game can therefore be thought of as a "family" of potentially interesting logic puzzles, and the play consists of each player posing such a puzzle to the other. Good players are the ones who find the most difficult puzzles to present to their opponents.
Many games which are abstract in nature historically might have developed from thematic games, such as representation of military tactics.
10
In turn, it is common to see thematic version of such games; for example, chess is considered an abstract game, but many thematic versions, such as
Star Wars
-themed chess, exist. Nevertheless, the theme is aesthetic and interchangeable, and does not affect actual play.
Traditional abstract strategy games are often treated as a separate game category, hence the term 'abstract games' is often used for competitions that exclude them and can be thought of as referring to
modern
abstract strategy games. Two examples are the IAGO World Tour (2007–2010) and the Abstract Games World Championship held annually since 2008 as part of the
Mind Sports Olympiad
11
Typology
edit
Chu Shogi
is a traditional Japanese chess-like capture game focused on
checkmating
the opposing king
At the core of abstract game typology are pure strategy games like Chess and Go, where a player or computer can, in theory, analyze a game "
tree
" of all possible moves to find an
optimal play
. These games are
deterministic
, meaning they have no hidden elements or luck. Within this category, scholars further distinguish between "impartial" games (where available moves depend only on the state of the board, like
Nim
) and "partisan" games (where players have different pieces or move sets, like Chess).
Other critical dimensions of these games include
finiteness
and
information
. Games can be finite, cyclic (allowing for repetitions like "
ko
" in Go), or
transfinite
. Transfinite games involve infinite states, such as
Infinite chess
and "Continuous Go" played on a coordinate-free plane, or "
Tamsk
," which uses time-based movement. Furthermore, one can distinguish between "perfect information" (fully knowing the board state) and "complete information" (knowing the opponents' goals and preferences). Incomplete information arises when a player’s motivations or "utility functions" are unknown to others.
If one includes other types of games, the category of abstract strategy may then expand into a broader class of games that are less than pure strategy. This category encompasses games with hidden information, elements of luck (Backgammon), or simultaneous moves.
Since games of pure chance like
snakes and ladders
have no strategic elements, they are not abstract strategy games.
By level of determination
edit
Based on these fundamental distinctions on how game outcome is determined, the following typological classification can be applied to abstract games:
12
Game Category
Key Characteristics
Examples
Combinatorial
Pure abstract strategy deterministic games, no hidden information, with sequential moves.
Chess, Go, Hex, Hive, Nim
Imperfect Information strategy
Abstract strategy games with hidden information elements, but no chance
Stratego
Kriegspiel
Gunjin Shōgi
Chance + Choice
Includes elements of chance but retains perfect information, "impure" strategy games
Backgammon,
Azul
Chance + Choice with hidden information
Includes elements of chance
and
hidden information
Poker
Simultaneous moves
Since players make moves at the same time, all information is not totally available at all times
Morra
, 55Stones, or Simultaneous Chess
By objective
edit
Apart from the basic binary distinction between pure combinatorial strategy and other types, there are also other ways to classify abstract strategy games. One common approach distinguishes games according to their primary objective, which is often related to the primary
game mechanic
employed in the game.
Harold Murray
's
A History of Board Games Other Than Chess
(1952) analyzed five categories: "race", "war", "hunt", "alignment" / "configuration", and "mancala" games.
13
14
Robert Bell
's
Board and Table Games from Many Civilizations
(1960) similarly used four categories, "race", "war", "positional", and "mancala" games.
14
Parlett
's
The Oxford History of Board Games
(1999),
15
describes a "classical" categorization of board games which consisted of four primary categories: "
race
", "
space
", "
chase
", and "
displace
" games.
15
16
: 17
The following table classifies abstract strategy games by their primary objective or mechanical "win condition":
12
Category
Description
Examples
Territory Control / Scoring
Players compete to occupy or surround the most space on the board.
Go
Go variants
Blokus
Amazons
Reversi
SyGo
Symple
Capture / Elimination
The goal is to capture opponent pieces or a single special piece (e.g. king).
Chess-like games
Checkers
Shogi
Xiangqi
Hive
Onitama
Epaminondas
Dameo
Alquerque
Surakarta
Count-&-capture
Players use tokens in rows of designated positions to capture their opponent's pieces.
Mancala games
Oware
Sungka
Toguz korgool
Connection
Players must create a line or specific grouping of pieces that make a specific connection
Hex
Twixt
Pente
Tak
Lines of Action
Trax
Havannah
The game of Y
Onyx
Alignment
Players must position their tokens in an array of a prescribed length.
Tic-Tac-Toe
Gomoku
Nine Men’s Morris
Connect6
Renju
Configuration
Players must line up their pieces to complete a pre-determined array in a particular order.
Lines of Action
Hexade
Entropy
Race
Racing pieces from a starting position to a goal along a predefined track.
Senet
Chaupar
Backgammon
Traversal / Crossing
Maneuver a piece or pieces to a specific spot (usually across the board)
Agon
Arimaa
Camelot
Breakthrough
Halma
Chinese Checkers
Quoridor
Blocking
Block the opponent from being able to make a move
Mu-torere
, Entrapment,
Nim
, Pentominoes
Asymmetrical, multiple objectives
Games with different objectives, asymmetric goals
Tafl games
(Elimination vs. Traversal),
Fox games
Cooperative
Games in which players work together towards a common goal
Maze (AG22),
Zendo
Penultima
Pieces and boards
edit
Hive
is played with different hexagonal tiles and no board
In some abstract games, pieces do not move once placed, while in others they may move according to specific rules (which may or may not include the capture of other pieces). Another important axis of classification concerns the nature of game pieces. In some games like chess, pieces possess specific identities and differentiated movement rules, producing a hierarchy of roles and values. In others (like checkers), all pieces are functionally identical, and strategic complexity arises from spatial relations and accumulation rather than from intrinsic piece power. These distinctions have significant implications for how players conceptualize material advantage, exchange, and sacrifice.
In a rarer class of games (
Duck chess
, Nex, Hobbes), there are one or more neutral pieces apart from the pieces belonging to each player with interact with the other pieces in unique ways (such as blocking them etc).
The rules governing the interaction of the pieces is also another key element differentiating abstract games. For example, capture based games can be based on various means of capture, such as displacement capture (e.g. chess), jumping (checkers), and surrounding a piece, also known as custodial capture (tafl,
latrunculi
).
A modern Hnefatafl game, exemplifying a classic asymmetrical setup wherein white has fewer pieces and a king, which must escape to the edge. The red player meanwhile must capture the white king.
Symmetry
is yet another element. While many abstract games begin from perfectly symmetrical positions, others like
tafl games
or
fox games
introduce asymmetry in roles, objectives, or initial placement (
Horde chess
). These kinds of asymmetry lead to strategic dynamics unavailable in symmetric games.
Board structure and design provides a further basis for typology. Many abstract strategy games are played on regular grids that constrain movement
orthogonally
or
diagonally
, while others rely on graph-based boards in which movement follows predefined connections between nodes. Grid based boards vary in the basic geometric shape used, with
squares
(chess), and
hexagons
(Hex) being the most common. While most are two dimensional, some are 3D, like those in the various types of
Three-dimensional chess
. In many grid based boards, all grids are the same, but in certain games, some cells or spaces might have unique features or properties that affect play, such as the river and palace in
Xiangqi
. In certain games like
Trax
and Hive, the effective structure of the "board" emerges through play itself, as the accumulation of pieces transforms the strategic landscape over time.
Other considerations
edit
While some abstracts like chess and
checkers
begin with a determined starting position, others like
Go
and
Hive
begin with an empty board or field, which is filled placing the game pieces or tiles one by one in each turn. Some abstract strategy games have multiple starting positions of which it is required that one be randomly determined. For a game to be one of skill, a starting position needs to be chosen by impartial means.
Some games, such as
Arimaa
and
DVONN
, have the players build the starting position in a separate initial phase which itself conforms strictly to combinatorial game principles. Most players, however, would consider that although one is then starting each game from a different position, the game itself contains no luck element. Indeed,
Bobby Fischer
promoted
randomization of the starting position in chess
in order to
increase
player dependence on thinking at the board.
17
Number of players is yet another element. Most abstract games are two players, but there are also numerous games for three, four or more players such as
Chaturaji
Chinese Checkers
Bughouse Chess
, and Rengo. These multiplayer abstracts thus introduce game politics, and open up the possibility of the "kingmaker" effect, which happens when one losing player makes a choice that improves the chances of the eventual winner.
History
edit
Achilles
and
Ajax
playing a
board game
Premodern
edit
The earliest known board games for which we know the rules were abstract
race games
. Games like
Senet
(c. 3100 BCE) and
Mehen
c.
3000 BC
E) from
Ancient Egypt
, and the
Royal Game of Ur
(c. 2600 BCE) contained elements of luck, but they paved the way for later pure strategy games. A board resembling a
Draughts
board was found in
Ur
dating from 3000 BC, found by British archaeologist Sir Leonard Woolley in the 1920s.
18
19
The
British Museum
contains examples of
ancient Egyptian
checkerboards, found with their pieces in burial chambers, and boards like these are known to have been used by
Queen Hatasu
20
21
Another very ancient family of board games is the
Mancala
family, which may be as old or older than Senet, though this is disputed by scholars.
22
23
24
Mancala variants spread across Africa, the Middle East, and Asia during the medieval period.
25
Weiqi at the Ming imperial court, 16th century
Go
(Ch: Weiqi), originating in China over 2,500 years ago, remains the oldest pure abstract game still played in a manner close to its original form. It was considered one of the
four essential arts
of the cultured
aristocratic
Chinese scholars in antiquity and remains popular today. The earliest written reference to the game is generally recognized as the historical annal
Zuo Zhuan
26
27
(c. 4th century BC).
28
Many traditional cultures outside Eurasia also developed their own abstract strategy games.
Patolli
originated in
Mesoamerica
, and was played by a wide range of
pre-Columbian
cultures such as the
Toltecs
and the
Aztecs
Kōnane
was invented by ancient
polynesians
in Hawaii and features a capture mechanism similar to checkers.
29
30
Before the rise of chess, Mediterranean cultures played a type of capture game similar to checkers.
Plato
mentions a game called
Petteia
el
, as being of Egyptian origin,
21
and
Homer
also mentions it.
21
Literary sources suggest that
petteia
games (also called
polis
) involved capture and blocking, making them conceptual ancestors of later abstract strategy games. A similar type of capture based strategy game was played in the
Roman Empire
under the name latrunculi or
ludus latrunculorum
31
The exact rules of these types of games are not known, though there have been numerous attempts at reconstruction. These games may have influenced the
"Tafl" family of games
(like Hnefatafl or "Viking chess"), popular in Northern Europe, which differed from the Roman games in that Tafl games featured asymmetrical gameplay.
An illustration from the
Libro de los Juegos
depicting
grant acedrex
, a
chess variant
played on a 12x12 board
Chess
is believed to have originated in northwest
India
, in the
Gupta Empire
c.
280–550),
32
33
34
35
where its early form in the 6th century was known as
Chaturaṅga
, literally
four divisions
[of the military] —
infantry
cavalry
elephants
, and
chariotry
, represented by the pieces that would evolve into the modern pawn, knight, bishop, and rook, respectively. Chaturaṅga was played on an 8×8 uncheckered board, called
ashtāpada
, which was also used to play other games like the four player
Chaturaji
36
Modern chess developed in Spain and Italy from the Middle Eastern
Shatranj
, a medieval descendant of the Indian game. The modern
queen
was first introduced in Spain during the 15th century, as seen in the
Catalan
poem
Scachs d'amor
37
Before the rise of modern chess to dominance, many pre-modern
chess variants
also existed, like
Courier chess
Grant Acedrex
Short assize
, and
Great chess
Outside of the
Mediterranean world
and Europe, numerous regional chess-like games also developed from the Indian or the Middle Eastern versions of game. They include
Xiangqi
(China),
Shatar
(Mongolia),
Makruk
(Thailand) and
Sittuyin
(Burma).
Shogi
(Japan) was the earliest
chess type game
to allow captured pieces to be returned to the board by the capturing player.
38
This drop rule is speculated to have been invented in the 15th century, possibly connected to the practice
mercenaries
switching loyalties when captured.
39
Timeline
edit
Modern reconstruction of
Ludus Latrunculorum
The following is a timeline of key pre-modern abstract strategy games:
12
Mehen
(c. –3500)
Senet
(c. –3000): An Egyptian race-and-transition game played on a 3×10 board which acquired funerary and religious symbolism over time.
Royal Game of Ur
(c. –2600): A Mesopotamian race game
Proto–XII Scripta (c. –2500): A hypothesized early ancestor of later Roman tables games, inferred from archaeological material at
Jiroft
“Five Lines” (ε γραμμαί) (c. –650): A Greek linear board game known from literary references
Petteía
(c. –450): A Greek abstract strategy game emphasizing positional play and capture; likely involved unequal objectives or zones of control.
Liubo
(c. –400): An early Chinese board game known from tomb finds and texts; rules are lost
Aṣṭāpada
(c. –300): An 8×8 grid board used for multiple games
Weiqi
/ Go (c. –300): A fully abstract strategy game centered on territory and influence rather than piece capture; represents an independent East Asian strategic tradition.
Tabula
(c. –150): A Roman successor to
XII scripta
; a direct ancestor of later backgammon-type games.
Nine Men’s Morris
(c. –100): Simple alignment games known in the Roman world
Latrunculi
(c. –100): A Roman capture-based war game with no chance elements
Proto-Patolli (k’uillichi) (c. +400): Mesoamerican race game; structurally comparable to Old World track games.
Boluosai Xi (c. +400): A Chinese war-themed board game; poorly attested but suggestive of early strategic abstraction.
Shuangliu (c. +500): A Chinese race-and-track game that later influenced Japanese
sugoroku
Caturaṅga
(c. +500): The earliest form of chess; introduced differentiated piece movement and formalized symmetrical war simulation.
One-cycle
Mancala
(Aksum) (c. +550): An early African pit-and-stone game; emphasizes counting, redistribution, and resource exhaustion.
Nard
(c. +600): A Persian tables game which is a direct ancestor of backgammon.
Hnefatafl
(c. +700): A Scandinavian asymmetrical war game with unequal forces and objectives; one of the earliest known asymmetrical abstract strategies.
Fidchell
(c. +750): Insular Celtic strategy games described in literature; possibly related to
latrunculi
in structure.
Shengguan Tu
(c. +800): A Chinese promotion game tied to bureaucratic advancement metaphors
Xiangqi
(c. +800): Chinese chess
Mig-gmag
(c. +800): Tibetan abstract board games emphasizing movement and capture
Tafl games
(c. +900): Includes asymmetrical victory conditions
Rythmomachia
(c. 1000): A medieval European mathematical strategy game based on numerical ratios and capture conditions.
Chess
(regional traditions) (c. 1000): Consolidation of chess traditions across Europe, Japan (
shogi
), China (
xiangqi
), and Southeast Asia (
chatrang
variants).
Tiger Games
Baghchal
(c. 1100): South Asian hunt games; emphasize asymmetric movement, capture, and spatial confinement.
Modern developments
edit
Children playing a commercial version of Chinese checkers
The modern era saw the leveraging of new technology to make board games, including
printing presses
plastics
and
mass production
. This allowed for a greater availability of different game sets, making them more accessible to people from various
social classes
who had more disposable income to spend on leisure activities.
18
Modern abstract games often use innovative materials (like
Bakelite
or
3D-printed
plastic) and focus on elegant, minimalist rule sets that produce deep complexity.
Camelot patent drawing, 1930
Ferdinand Maack
demonstrating his various Raumschach variants at the Hamburg Chess Exhibition
The 19th and 20th centuries saw an increase in new games with unique and creative mechanics. The modern era also saw the emergence of influential
game designers
, and the development of vibrant communities of serious gamers and
ludologists
who study games from different perspectives, from the practical elements to mathematical game theory. The roots of modern abstract game design can be traced to the early
nineteenth century
, when designers began systematically exploring new spatial and mechanical concepts. In 1842,
Agon
emerged as the first known game to utilize hexagonal cells, featuring a racing format with a common goal zone shared by both players.
40
41
The latter half of the century proved particularly fertile.
Reversi
(and its variant Othello) appeared in 1883, introducing a unique toggle capture mechanism that would later influence numerous designs.
42
This game achieved remarkable longevity, remaining actively played through its 1971 reincarnation as Othello, demonstrating that certain innovative mechanics could transcend their era.
43
Around the same time,
Bashni
emerged in 1885 as the progenitor of column checkers games. The 1880s and 90s also saw various new crossing games like
Halma
Salta
(1899) and
Chinese Checkers
, though earlier games of this type did exist, like
Ugolki
44
Chinese Checkers (originally designed as Sternhalma in Germany) notably achieved folk status, becoming one of the rare designer games to achieve widespread adoption after its publication by the
Pressman company
45
George S. Parker
was an influential game designer of the turn of the century, known for founding the early game company
Parker Brothers
. His innovative abstract game
Camelot
(originally called Chivalry) was an early crossing game requiring players to move two pieces into a goal zone.
46
The period between 1895 and 1900 saw the creation of several games that would later prove significant, including
Dots and Boxes
in 1895. The turn of the century brought
Raumschach
in 1907, an early exploration of
three-dimensional chess
that demonstrated designers' willingness to challenge fundamental spatial assumptions.
47
20th century
edit
The end of a game of
Hex
on a standard 11×11 board. Here, White wins the game by connecting the left and right sides of the board.
The 20th century saw an explosion in the creation of new and innovative abstract strategy games along with the development of
combinatorial game theory
and game design theory. The first half of the century witnessed continued experimentation with spatial arrangements and rule modifications.
Emanuel Lasker
's
Lasca
appeared in 1911, followed by
Ringo
in 1915. The 1920s introduced
Marseillais chess
, also known as Double Move Chess, which began exploring multi-action turn protocols that would later become significant design tools.
48
Meanwhile, Stavropol Checkers introduced the mutator concept of utilizing pieces of either color. The period also saw important developments in traditional abstract games, with the Japanese
gomoku
variant
Renju
beginning its evolution as a living ruleset in 1899.
49
The use of
komi
as a balancing mechanism in Go, first documented in 1852 and employed in tournament play by 1907, illustrates how mathematical approaches to game balance were gaining recognition.
The 1940s proved pivotal with the creation of
Hex
in 1942 by mathematician
Piet Hein
. Popularized by
John Nash
, Hex kickstarted the hexagonal connection genre and would become one of the most influential games in modern abstract design history.
50
1942 also saw the development of
Teeko
, notable for incorporating dual win conditions wherein players could win by forming either four-in-a-row or a two-by-two square. This game achieved significant commercial success initially, though it ultimately faded from play despite multiple revisions by its creator, the magician
John Scarne
, illustrating that marketing and publicity cannot guarantee long-term success without sufficient depth of play.
The 1950s and 1960s saw an explosion of new abstracts, and the era marked a crucial transition as game design began to develop more sophisticated theoretical underpinnings.
Alice Chess
appeared in 1953, while
Twixt
emerged in 1957 as perhaps the first successful square connection game.
51
Significantly, Twixt's designer
Alex Randolph
insisted that his name appear on the box, representing an early assertion of designer identity in an industry where creators often remained anonymous.
Sid Sackson
emerged as a particularly influential figure during this era. His 1964 game
Focus
introduced stack movement equal to stack height, a mechanic that would inspire future designs. Focus would go on to win the
Spiel des Jahres
in 1981, marking rare mainstream recognition for a pure abstract game. Sid Sackson's 1969 book
A Gamut of Games
proved very influential, exposing a generation of players and designers to innovative abstract games and helping establish a vocabulary for discussing game mechanics and design principles.
52
Lines of Action
appeared in 1969.
53
It introduced the unification or dynamic connection genre through elegant rules and a strong aversion to draws and cycles, though its core mechanics were essentially non-finite with additional rules ensuring termination. Further games like
Sprouts
, and
Feudal
explored diverse mechanical spaces. The
Game of Y
(circa 1960) also offered an important variant of Hex that eliminated special edge markings.
Cathedral
game in progress
The 1970s saw continued mechanical innovation alongside growing commercial interest.
Connect Four
(1975) became a popular commercial game, known for its unique vertical design that was accessible to casual players.
Cathedral
(1978), was another new game with unique pieces and mechanics.
Robert Abbott
wrote an influential article promoting his game Epaminondas (1975), titled
Under the Strategy Tree
54
, which introduced his concept of "clarity" as it pertains to game design in abstract strategy games. The late 1970s also witnessed experiments with non-traditional boards, including
Kensington
(1979), which became perhaps the first combinatorial abstract game on an
Archimedean board
. Furthermore, multi-action turn protocols now bean to appear in games like Conquest (1974), Guerilla (1976), and Phalanx (1980). These games showed how multiple sequential actions within a single turn could lead to further strategic depth.
1980's
Trax
introduced the loop goal, later utilized in
Havannah
(1981), creating an alternative win condition that would inspire subsequent designs.
Abalone
appeared in 1987, achieving commercial success through high production values and intensive marketing despite balance issues in its original setup that players addressed through alternative configurations.
Amazons
developed in 1988 as an emergent territorial game featuring a board-shrinking dual-move mechanic that created a high
branching factor
of possible game states.
55
The work of mathematician
John Conway
significantly contributed to the development of
combinatorial game theory
, which he developed while studying Go, providing mathematical tools and terminology that would influence how designers and players discussed abstract games. The publication of
Winning Ways for Your Mathematical Plays
(1982, Berlekamp, Conway and Guy) provided rigorous mathematical analysis of combinatorial games, further developing the theoretical foundations of the field. R. Wayne Schmittberger contributed significantly through his game designs and his 1992 book
New Rules for Classic Games
. Schmittberger's Maxi-Star appears to be the first combinatorial game employing recursive scoring, a mechanism where the largest group determines the winner, with ties broken by the second-largest group, then the third, and so on. This scoring approach would later be popularized by
Reiner Knizia
in games like
Tigris and Euphrates
(1997) and
Ingenious
(2004), eventually proving influential in modern abstract design.
The information age and the 21st century
edit
A chess variant played on the
Zillions of Games
software
The late 20th century
digital revolution
saw the rise in the use of
computers
to analyze abstract games and to play them with other humans over the internet, or against
bots
of various strengths. The founding of the
Computer Olympiad
in 1989 established competitive computerized game-playing as a recognized pursuit, while
Deep Blue
's defeat of
Garry Kasparov
in 1996 demonstrated that
artificial intelligence
had reached world-championship level in
chess
, raising questions about the relationship between human and computer capabilities that would influence game design for decades.
The
internet's
popularization in the 1990s proved momentous, enabling geographically dispersed individuals interested in abstract games to connect and exchange ideas.
49
The rec.games.abstract discussion group, with earliest evidence dating to 1992, became an important venue for design discussion and community formation. Several designers credited this
internet forum
as pivotal to their development. Websites like
ChessVariants
(1995), and Gamerz.net (1996) provided platforms for sharing and playing many rare abstract games.
The
Zillions of Games
software (1998) represented a breakthrough in making abstract games accessible.
49
This software, along with later platforms like Ludi (2006-2009),
Ludii
(2016-present), and the
Java-based
AiAi (2015-present) allowed players to try games they did not physically own, while allowing game designers to distribute their creations widely. These tools fundamentally democratized abstract game design and play. The 1990s also saw the abstract
Ataxx
in 1990 gaining fame as an
arcade video game
, representing perhaps the first case of contagious toggle capture where pieces could convert adjacent enemy pieces. Platforms for online play proliferated during the 2000s. Little Golem, founded in 2000, provided correspondence play. Boardspace.net (founded 2006), Iggamecenter (founded 2007), and others offered both real-time and correspondence options. Super Duper Games (founded 2005) became another important repository.
Game designer
Kris Burm
playing
TZAAR
at the
Essen Game Fair (Spiel)
, 2007
The early 2000s marked a watershed as abstract game design achieved greater
professionalization
. Publishers specifically focused on abstract games emerged, including
Gigamic
(founded 1991,
Quarto
and
Pylos
), Clemens Gerhards (begins publishing in 2000), Steffen-Spiele (founded 2003), and Nestorgames (2009). Stephen Tavener's single-handed publication efforts also led to an extensive catalogue of new designs.
Kris Burm's
GIPF Series
" of games, beginning with
GIPF
in 1996 and continuing through
ZERTZ
(1999),
DVONN
(2001), and
TZAAR
(2007), had significant impact on design thinking during the 90s and 2000s.
56
57
These games featured high-quality components and innovative mechanics, with DVONN and TZAAR winning game of the year awards. From 1998 to 2009, abstract games like
Quoridor
, DVONN, and TZAAR won
Games Magazine
's overall Game of the Year award, achieving mainstream recognition.
Abstract Game Magazine
began publication in 2000, running until 2003 before resuming in 2020, providing a venue for serious discussion of design principles and game analysis. Mark Thompson's "Defining the Abstract" article published in 2000 contributed to ongoing discussions about what constituted an "abstract strategy game." Cameron Browne also emerged as a major figure through his 2005 book
Connection Games
, which provided comprehensive coverage of this important genre, and his publication of the first Hex strategy book. His 2008 dissertation on automatic generation and evaluation of recombination games led to
Yavalath
, a novel game designed by computer using evolutionary algorithms, demonstrating that algorithmic approaches could produce genuinely enjoyable games. Further academic studies, like Frank Lantz's 2017
Depth in Strategic Games
(2017), have provided analytical tools for evaluating a strategy game's strategic depth.
From approximately 2000 to 2010, a game's resistance to AI and computer domination became a frequent discussion topic and design goal. Designers thus sought to create games that would stymie artificial intelligence, with designers of games like
Octi
Arimaa
(2002), and
Havannah
offering significant monetary rewards for AI that could defeat top humans. This trend drove designers to look for game mechanics that proved challenging to AI like multimove turns (Arimaa).
58
59
Arimaa notably sustained itself through an online community, demonstrating how internet communities could keep games alive. However, the "AI resistance" trend died out as
Monte Carlo methods
developed and
neural network
approaches emerged, which allowed AIs to learn and dominate in almost any game with proper training.
AlphaGo
's success against
Lee Sedol
in 2016 marked a turning point in this trend of game design.
AlphaZero
, published in
Science
in 2018 as a general game-playing algorithm, and projects like
Leela Zero
(2017) demonstrated that AI had achieved dominance across multiple games.
Meta's
Polygames mastered Hex and Havannah in 2019, while Galvanize Zero mastered numerous games including Chess,
Connect6
, various Hex board sizes, Reversi, Amazons, Breakthrough, and International Draughts. Despite AI's dominance, the AI resistance movement had a lasting impact on abstract game design. It prompted designers to think systematically about human perceptual faculties and their relationship to games, contributing to deeper understanding of strategic depth. This influenced numerous subsequent designs even after the original motivation to resist AI dominance had disappeared.
Many innovations in game mechanics were also introduced during the 90s and 2000s. For example, the 12* balance protocol, where the first player makes one move and subsequently each player makes two moves, gained prominence through
Connect6
(2003). The protocol had earlier appeared in Marseilles Chess variants, with the 12* notation being formally incorporated in 1963. Recursive scoring emerged as another powerful tool. Knizia's implementation of it in
Ingenious
(where scores are determined by the player's weakest color, creating tension around balanced development) demonstrated how recursive scoring could add significant subtlety without interfering with new players' ability to engage with a game. Christian Freeling's
Symple
(2010), with its "plant or grow all groups" mechanic where an action happens for all groups each turn, represented another exploitation of this approach. Loop goals, introduced by
Trax
(1980) and Havannah (1981), provided an alternative win condition to connection and territory.
The concept of
mutators
also developed, which are general modifications applicable across multiple games. First publicly mentioned around 1999 and attributed to João Pedro Neto, mutators included variations like
misère
(goal inversion, "playing to lose"), placement of either color, and specific ban patterns. Yodd (2012) exemplified synergistic mutator use, combining 12* protocol with the ability to place tokens of either color. The Crossway ban, popularized by Crossway (2007), prevented certain cutting patterns. Unlur (2002) popularized the contract phase, a pre-game negotiation mechanism. Various attempts to make Go intrinsically finite have appeared, including
SyGo
(2010), Redstone, Loose, and Stoical Go (all 2012), seeking to eliminate the need for
ko rules
while preserving the game's essential character.
Some further unique abstract games from the 90s and 2000s include
Gess
Quorridor
Blokus
Dameo
Breakthrough
Clobber
Khet
Caylus
, and
Barca
A themed version of
Santorini
Recent commercially successful abstracts include
Hive
(2001),
Santorini
(2004),
Battle Sheep
(2010),
Tak
(2016) and
Photosynthesis
(2017). Their success illustrates how, despite their decline in mainstream culture, a few abstract games still manage to rise to some level of popularity and compete in the increasingly crowded
boardgame
market. Nevertheless, while publishers of abstracts like
Gigamic
succeeded through high production values, most abstract games remain niche products (aside from classics like chess). As such, online platforms have become increasingly important for sustaining player communities and keeping lesser known abstract strategy games alive. Discussions on
BoardGameGeek's
abstract subforum have provided venues for recent design discussion and community building. Likewise, João Pedro Neto's
World of Abstract Games
website and
Christian Freeling
's
Mindsports
website served as important repositories of information and analysis of abstract games.
Cultural and competitive contexts
edit
Abstract strategy games have historically been embedded within broader cultural, educational, and philosophical frameworks. In East Asia, games such as go and shogi were traditionally associated with moral cultivation, disciplined thinking, and elite education. In Europe, chess became a central symbol of rationality, and intellectual refinement. Across cultures, abstract games have served as vehicles for social interaction, competition, and the transmission of strategic knowledge.
Modern competitive play has further institutionalized abstract strategy games through ranking systems, organized tournaments, and extensive bodies of literature. Formalized competition has also encouraged the development of standardized rule sets and notational systems, facilitating the preservation and study of exemplary games by elite players, some of whom have become celebrities.
Study and theory
edit
Objective analysis
edit
Analysis of "pure" abstract strategy games is the subject of
combinatorial game theory
. This branch of
mathematics
studies games with
perfect information
. It analyzes "game states" to determine if a position is a win, loss, or draw. The complexity of a game is often measured by its
state-space complexity
(total number of legal positions) and
game-tree complexity
(total number of possible paths the game can take).
Abstract strategy games with hidden information, bluffing, or simultaneous move elements are better served by
Von Neumann–Morgenstern
game theory
, while those with a component of luck may require
probability theory
incorporated into either of the above.
While ranking abstract strategy games according to qualitative complexity is highly subjective, one can analyze their complexity is purely quantitative terms. In terms of measuring how finite a mathematical field each of the three top contenders represents, it is estimated that checkers has a
game-tree complexity
of 10
40
possible games, whereas chess has approximately 10
123
. As for Go, the possible legal game positions range in the magnitude of 10
170
Combinatorial abstract strategy games have long been used in
AI research
. Since they are characterized by fixed rules and perfect information, they provide an ideal environment for testing and developing computer
algorithms
. Perhaps the most famous example is
Deep Blue
(1997), the first computer to beat a reigning World Chess Champion (
Garry Kasparov
) using brute-force calculation.
AlphaGo
(2016), developed by Google's
DeepMind
lab used
neural networks
and
reinforcement learning
to defeat world-class Go champion
Lee Sedol
. This was a key landmark because Go has more possible positions than there are atoms in the observable universe, making brute force next to impossible.
Praxis
edit
Mathematicians
playing
Kōnane
at a combinatorial game theory workshop
Regarding practical
gameplay
considerations, many abstract strategy games reward careful analysis of various possible moves, opponent responses, and consequences. This is often referred to by various terms like "calculating", "reading lines", "looking ahead," "forward visualization."
60
However, this is time consuming and tiring, and abstract game players do not just play by brute force calculation. Instead, various
heuristics
are employed to eliminate bad options and choose optimal paths, which can then be calculated to a certain degree.
60
In practice, these often arise through experience, and
intuition
, as well as knowledge and study of the game's theory and basic tactics and strategy.
60
In traditional games, heuristics may be passed on through proverbs or widespread sayings, like "a Knight on the rim is grim."
60
David Ploog outlines the following cyclical process for finding a good move in any abstract strategy game: position evaluation, formulation of subgoals, selection of candidate moves, calculating lines. This circle is not linear, since at any one point, one might have to backtrack due to discovering that a specific choice is not optimal. Furthermore, the process will often fork or iterate, as one follows various lines or goals.
60
Ploog also outlines four flavors of heuristics:
60
Evaluations: Analyzing a position at all scales
Strategies: A method for winning that is global, including formulating subgoals
Tactics: Local scale and short term methods
Patterns: special moves or structures
A number of
strategic
concepts recur across many abstract games. The notion of
tempo
captures the value of forcing moves and strategic initiative. Some capture based abstracts emphasize gaining a
material advantage
over the opponent by eliminating their pieces and protecting yours. The balance between local tactics and global strategy is especially prominent in games with large boards, where players must decide when to concentrate forces and when to shift attention elsewhere (called
tenuki
in Go). Concepts like
sacrifices
exchanges
, and trading
material
for positional compensation illustrate how evaluation heuristics can be quite dynamic in their engagement with other game patterns and elements.
60
More complex strategies include extensive opening lines, with numerous variations, which are often memorized and studied by high level players.
60
Abstract strategy games with significant depth and a history of competitive play usually develop a body of theoretical literature, including introductory manuals, game records and advanced theory books. Many traditional abstract games like Chess, Go, Shogi and Xiangqi have an extensive theoretical literature, with centuries of publications. A modest theoretical literature has also developed around a few modern abstract games, such as
Hex
Hexachess
Arimaa
Reversi
Tak
and
Hive
61
Design principles and aesthetics
edit
Quoridor
, with its
minimalist
style and wooden pieces exemplifies one strand of modern abstract game design
The design and evaluation of new abstract strategy games often emphasize conceptual
elegance
and
simplicity
, with complexity arising from the combination of a few ingenious rules. Modern designers frequently aim to achieve maximal strategic depth with minimal rules, allowing
complexity
to emerge naturally from player interaction rather than from elaborate mechanics.
Game balance
is a central concern for modern
game designers
, particularly with respect to concepts like first-move advantage. Many abstract games incorporate compensatory mechanisms or refined rule adjustments to address this issue.
Another recurring consideration is the relationship between
learnability
and
mastery
. Successful abstract games tend to offer straightforward rules that can be understood quickly, while simultaneously supporting a deep and prolonged learning curve as well as extensive
replay value
. This combination has contributed to the longevity of classical abstract games, which remain strategically relevant and exciting centuries after their inception. The goal of many modern game designers is captured in the saying "easy to learn, lifetime to master", which is considered to be a feature of the great classics like Go and Chess.
Abstract games which have depth of play are suitable for elite tournament play, often developing a body of theory and literature.
According to J. Mark Thompson, a good abstract must possess four key qualities: depth, clarity, drama, and decisiveness.
Depth refers to the capacity of a game to support many distinct levels of skill, such that optimal play remains uncertain in most positions and improvement remains possible over long periods. A deep game resists complete calculation and instead demands refined judgment, allowing measurable stratification among players of different strengths. Clarity, by contrast, concerns intelligibility. In games that are clear, players should generally be able to recognize strong moves, especially decisive ones, and develop reliable
heuristics
even without exhaustive study. A game that lacks such intelligibility becomes opaque, leaving players without strategic intuition. The challenge for designers lies in ensuring that complexity does not collapse into inscrutability, particularly in newly invented games where it may be difficult to distinguish temporary obscurity from permanent unintelligibility.
Drama requires that a player in an inferior position retain meaningful chances to recover, sustaining suspense and engagement across the whole game rather than allowing early mistakes to render later play pointless. Decisiveness, however, demands that sustained superiority can ultimately be converted into an unavoidable win, rather than being indefinitely neutralized by defensive tactics. Games that fail in this respect risk degenerating into endless draws or futile struggles. Thompson writes that these four qualities exist in tension. Increasing clarity can undermine depth, excessive comeback potential can erode decisiveness, and easily secured wins can drain drama. Only a small number of exceptional games manage to attain a balance between these opposing demands. Such games reward play and serve as profound vehicles for expressing human character and intellect, meriting recognition alongside other
liberal arts
Designers
edit
Certain
game designers
have proved particularly influential through their games and/or their articulation of design principles and theory. Some important modern designers include:
Ferdinand Maack
(1861–1930):
Raumschach
(Space chess), an early 3D chess
Emanuel Lasker
(1868–1941): a
world chess champion
who designed
Lasca
José Raúl Capablanca
(1888–1942), a world chess champion who developed "
Capablanca chess
" after play-testing with Lasker
George S. Parker
(1866–1952): designed numerous commercially procuded games including
Camelot
V. R. Parton
(1897–1974): designed many unique chess variants like
Alice Chess
Władysław Gliński
known for his popular version of Hexagonal chess and his
Rules of Hexagonal Chess
(1973)
Piet Hein
, the inventor of the influential abstract
Hex
Alex Randolph
Twixt
Sid Sackson
(1920–2002) author of
A Gamut of Games
He designed
Focus
(Domination), and
Fields of Action
Reiner Knizia
Ingenious
Through the Desert
Samurai
and
Tigris & Euphrates
, Cascadero
Wolfgang Kramer
Torres
El Grande
Robert Abbott
Baroque chess
Epaminondas
Crossings
Andrew J. Looney
, inventor of the
icehouse pieces
, used to play many abstract games like
Martian chess
and Homeworlds
Ralph Betza
FIDE Master
who designed many
chess variants
like
Chess with different armies
Avalanche chess
, and
Way of the Knight
Christian Freeling
: known for the Mindsports webpage and games like
Dameo
(2000),
Havannah
and
Symple
(2010)
Kris Burm
who designed the unique
GIPF Series
of games
James Ernest
, best known for
Tak
Mark Steere: Atoll, Oust
Phil Leduc:
Murus Gallicus
(2009)
Luis Bolaños Mures: Kingo (Go with two types of stones), 3D Amazons
Cameron Browne: Shibumi, Yavalath
Nick Bentley: Catchup (2010), Blooms
Dieter Stein: Ordo, Volo, Enso
Challenges and competitions
edit
Various competitions and challenges have spurred innovation in the design of abstract strategy games. Portugal's
Campeonato Nacional de Jogos Matemáticos
(2004–present), the
World Mind Sports Games
held by the
International Mind Sports Association
(IMSA) and the
Mind Sport Olympiads
(1997–present) have provided competitive venues that sustained interest and rewarded excellence in various abstract strategy games.
The
Computer Olympiad
(founded 1989) has tracked AI progress across multiple games. The 8×8 design competition that was won by
Breakthrough
encouraged further minimalist approaches to familiar board sizes.
62
The
Code Cup
, beginning in 2003, developed strong AIs for obscure games, providing analytical tools and raising profiles of otherwise unknown designs.
Abstract Games World Championship
edit
The
Mind Sports Olympiad
first held the
Abstract Games World Championship
in 2008 to try to find the best abstract strategy games all-rounder.
11
The MSO event saw a change in format in 2011
63
restricting the competition to players' five best events. During the four years span of 2014–2017, the title was not awarded. From 2018 to 2022 the tournament was reintroduced under the name Modern Abstract Games World Championships.
64
In 2023 it was renamed back to Abstract Games World Championships and only the games with perfect information remained under this category.
As of 2025 Andres Kuusk holds the record of most World Champion titles with 8. David Pearce has won the title four times and Florian Jamain twice.
2008:
David M. Pearce (England)
2009:
David M. Pearce (England)
2010:
David M. Pearce (England)
2011:
David M. Pearce (England)
2012:
Andres Kuusk (Estonia)
2013:
Andres Kuusk (Estonia)
65
2018:
Andres Kuusk (Estonia)
2019:
Andres Kuusk (Estonia)
2020:
Andres Kuusk (Estonia)
2021:
Andres Kuusk (Estonia)
2022:
Andres Kuusk (Estonia)
66
2023:
Florian Jamain (France)
2024:
Florian Jamain (France)
2025:
Andres Kuusk (Estonia)
67
See also
edit
Connection games
Game complexity
List of abstract strategy games
List of world championships in mind sports
Mind Sports Olympiad
World Mind Sports Games
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edit
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ISBN
978-0367144258
Abstract Games -- Issue 1 Spring 2000
Under the Strategy Tree
, archived from
the original
on 2006-08-21
, retrieved
2026-01-15
Pegg, Ed (1999),
Amazons
, retrieved
2014-10-19
Thomashow, Mitchell.
"GIPF Review"
. The Games Journal. Archived from the original on February 21, 2004
. Retrieved
2008-08-24
Blessing, Ron (2005-06-01).
"Review of GIPF"
RPGnet
. Retrieved
2008-08-24
Syed, Omar; Syed, Aamir (2003). "Arimaa – a New Game Designed to be Difficult for Computers".
International Computer Games Association Journal
26
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Rohrer, Finlo (24 November 2013).
"The unwinnable game"
BBC News
Ploog, David. "Abstract Game Heuristics", in
Abstract Games
— Issue 22 Autumn 2021
Abstract Games — Issue 22 Autumn 2021
Handscomb, Kerry. "8x8 Game Design Competition: The Winning Game: Breakthrough ...and two other favorites."
Abstract Games Magazine
, Issue 7, Autumn 2001.
"MSO XV Pentamind"
. Mind Sports Olympiad. August 28, 2011. Archived from
the original
on July 22, 2012.
Mind Sports Olympiad Modern Abstract Games Results
Mind Sports Olympiad Abstract Games World Championships Results
Mind Sports Olympiad Modern Abstract Games World Championships Results
Mind Sports Olympiad Meta Events World Championships Results
External links
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The University of Alberta Games Group
David Eppstein's CGT page
Talk "Redefining the abstract", by Cesco Reale at Board Games Studies 2022
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