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In an Avoider-Enforcer game, we are given a hypergraph. Avoider and Enforcer alternate in claiming an unclaimed vertex, until all the vertices of the hypergraph are claimed. Enforcer wins if Avoider claims all vertices of an edge; Avoider…

Computational Complexity · Computer Science 2022-11-21 Tillmann Miltzow , Miloš Stojaković

Given a graph $G$, a set $S$ of vertices in $G$ is a general position set if no triple of vertices from $S$ lie on a common shortest path in $G$. The general position achievement/avoidance game is played on a graph $G$ by players A and B…

Combinatorics · Mathematics 2023-09-14 Ullas Chandran S. V. , Sandi Klavzar , Neethu P. K. , Rudini Sampaio

In the Avoider-Enforcer convention of positional games, two players, Avoider and Enforcer, take turns selecting vertices from a hypergraph H. Enforcer wins if, by the time all vertices of H have been selected, Avoider has completely filled…

Combinatorics · Mathematics 2025-03-28 Florian Galliot , Valentin Gledel , Aline Parreau

We study the computational complexity of distance games, a class of combinatorial games played on graphs. A move consists of colouring an uncoloured vertex subject to it not being at certain distances determined by two sets, D and S. D is…

Computational Complexity · Computer Science 2019-02-12 Kyle Burke , Silvia Heubach , Melissa Huggan , Svenja Huntemann

Positional games were introduced by Hales and Jewett in 1963, and their study became more popular after Erdos and Selfridge's first result on their connection to Ramsey theory and hypergraph coloring in 1973. Several conventions of these…

Combinatorics · Mathematics 2024-09-04 Valentin Gledel , Nacim Oijid , Sébastien Tavenas , Stéphan Thomassé

We analyze Avoider-Enforcer games played on edge disjoint hypergraphs, providing an analog of the classic and well known game $Box$, due to Chv\'{a}tal and Erd\H{o}s. We consider both strict and monotone versions of Avoider-Enforcer games,…

Combinatorics · Mathematics 2013-09-10 Asaf Ferber , Michael Krivelevich , Alon Naor

In this paper, we study $(1 : b)$ Avoider-Enforcer games played on the edge set of the complete graph on $n$ vertices. For every constant $k\geq 3$ we analyse the $k$-star game, where Avoider tries to avoid claiming $k$ edges incident to…

We study two positional games played on hypergraphs, whose edges may be interpreted as winning sets. Two players take turns picking a previously unpicked vertex of the hypergraph. We say a player fills an edge if that player has picked all…

Discrete Mathematics · Computer Science 2026-04-14 Florian Galliot

Given an increasing graph property $\cal F$, the strong Avoider-Avoider $\cal F$ game is played on the edge set of a complete graph. Two players, Red and Blue, take turns in claiming previously unclaimed edges with Red going first, and the…

Computer Science and Game Theory · Computer Science 2025-05-30 Miloš Stojaković , Jelena Stratijev

We consider combinatorial avoidance and achievement games based on graph Ramsey theory: The players take turns in coloring still uncolored edges of a graph G, each player being assigned a distinct color, choosing one edge per move. In…

Computational Complexity · Computer Science 2007-05-23 Wolfgang Slany

In this paper we analyze biased Maker-Breaker games and Avoider-Enforcer games, both played on the edge set of a random board $G\sim \gnp$. In Maker-Breaker games there are two players, denoted by Maker and Breaker. In each round, Maker…

Combinatorics · Mathematics 2012-10-30 Asaf Ferber , Roman Glebov , Michael Krivelevich , Alon Naor

We study the algorithmic complexity of Maker-Breaker games played on the edge sets of general graphs. We mainly consider the perfect matching game and the $H$-game. Maker wins if she claims the edges of a perfect matching in the first, and…

Computational Complexity · Computer Science 2024-11-18 Eric Duchêne , Valentin Gledel , Fionn Mc Inerney , Nicolas Nisse , Nacim Oijid , Aline Parreau , Miloš Stojaković

In numerous positional games the identity of the winner is easily determined. In this case one of the more interesting questions is not {\em who} wins but rather {\em how fast} can one win. These type of problems were studied earlier for…

Combinatorics · Mathematics 2008-06-03 Dan Hefetz , Michael Krivelevich , Miloš Stojaković , Tibor Szabó

We analyze the duration of the unbiased Avoider-Enforcer game for three basic positional games. All the games are played on the edges of the complete graph on $n$ vertices, and Avoider's goal is to keep his graph outerplanar, diamond-free…

Combinatorics · Mathematics 2009-10-26 János Barát , Miloš Stojaković

We define a new escape game in graphs that we call Nemesis. The game is played on a graph having a subset of vertices labeled as exits and the goal of one of the two players, called the fugitive, is to reach one of these exit vertices. The…

Data Structures and Algorithms · Computer Science 2026-01-21 Pierre Bergé , Antoine Dailly , Yan Gerard

Amazons is a board game which combines elements of Chess and Go. It has become popular in recent years, and has served as a useful platform for both game-theoretic study and AI games research. Buro showed that simple Amazons endgames are…

Computational Complexity · Computer Science 2007-05-23 Robert A. Hearn

In this paper we will be introducing a type of game which as far as this author is aware has never been studied before. These are games where there are two players, one who is trying to get one of his pieces, called a King to a predefined…

Combinatorics · Mathematics 2012-09-07 Fraser Stewart

Since its introduction as a Maker-Breaker positional game by Duch\^ene et al. in 2020, the Maker-Breaker domination game has become one of the most studied positional games on vertices. In this game, two players, Dominator and Staller,…

Combinatorics · Mathematics 2026-01-14 Guillaume Bagan , Mathieu Hilaire , Nacim Oijid , Aline Parreau

In the Avoider-Enforcer game on the complete graph $K_n$, the players (Avoider and Enforcer) each take an edge in turn. Given a graph property $\mathcal{P}$, Enforcer wins the game if Avoider's graph has the property $\mathcal{P}$. An…

Combinatorics · Mathematics 2016-05-24 József Balogh , Ryan R. Martin

Given a fixed graph $H$ with at least two edges and positive integers $n$ and $b$, the strict $(1 \colon b)$ Avoider-Enforcer $H$-game, played on the edge set of $K_n$, has the following rules: In each turn Avoider picks exactly one edge,…

Combinatorics · Mathematics 2019-01-31 Małgorzata Bednarska-Bzdȩga , Omri Ben-Eliezer , Lior Gishboliner , Tuan Tran
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