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The restricted $(m,n;N)$-online Ramsey game is a game played between two players, Builder and Painter. The game starts with $N$ isolated vertices. Each turn Builder picks an edge to build and Painter chooses whether that edge is red or…

Combinatorics · Mathematics 2019-06-10 David Gonzalez , Xiaoyu He , Hanzhi Zheng

The Maker-Maker convention of positional games is played on a hypergraph whose edges are interpreted as winning sets. Two players take turns picking a previously unpicked vertex, aiming at being first to pick all the vertices of some edge.…

Discrete Mathematics · Computer Science 2025-04-22 Florian Galliot , Jonas Sénizergues

We investigate a game played between two players, Maker and Breaker, on a countably infinite complete graph where the vertices are the rational numbers. The players alternately claim unclaimed edges. It is Maker's goal to have after…

Combinatorics · Mathematics 2024-12-23 Nathan Bowler , Florian Gut

We study the following game version of the generalized graph Tur\'an problem. For two fixed graphs $F$ and $H$, two players, Constructor and Blocker, alternately claim unclaimed edges of the complete graph $K_n$. Constructor can only claim…

Combinatorics · Mathematics 2023-10-04 Balázs Patkós , Miloš Stojaković , Máté Vizer

We study two types of two player, perfect information games with no chance moves, played on the edge set of the binomial random graph ${\mathcal G}(n,p)$. In each round of the $(1 : q)$ Waiter-Client Hamiltonicity game, the first player,…

Combinatorics · Mathematics 2017-02-17 Dan Hefetz , Michael Krivelevich , Wei En Tan

Given two graphs $G$ and $H$, the online Ramsey number $\tilde{r}(G,H)$ is defined to be the minimum number of rounds that Builder can always guarantee a win in the following $(G, H)$-online Ramsey game between Builder and Painter. Starting…

Combinatorics · Mathematics 2023-02-20 Ruyu Song , Sha Wang , Yanbo Zhang

In this paper we consider a game played on the edge set of the infinite clique $K_\mathbb{N}$ by two players, Builder and Painter. In each round of the game, Builder chooses an edge and Painter colors it red or blue. Builder wins when…

Combinatorics · Mathematics 2023-05-09 Mateusz Litka

Consider the balanced Ramsey game, in which a player has r colors and where in each step r random edges of an initially empty graph on n vertices are presented. The player has to immediately assign a different color to each edge and her…

Combinatorics · Mathematics 2013-04-29 Luca Gugelmann , Reto Spöhel

In a Maker-Breaker game on a graph $G$, Breaker and Maker alternately claim edges of $G$. Maker wins if, after all edges have been claimed, the graph induced by his edges has some desired property. We consider four Maker-Breaker games…

Combinatorics · Mathematics 2013-09-24 Andrew Beveridge , Andrzej Dudek , Alan Frieze , Tobias Muller , Milos Stojakovic

We introduce a model of a controlled random graph process. In this model, the edges of the complete graph $K_n$ are ordered randomly and then revealed, one by one, to a player called Builder. He must decide, immediately and irrevocably,…

Combinatorics · Mathematics 2024-11-26 Alan Frieze , Michael Krivelevich , Peleg Michaeli

We study biased Maker-Breaker positional games between two players, one of whom is playing randomly against an opponent with an optimal strategy. In this work we focus on the case of Breaker playing randomly and Maker being "clever". The…

Combinatorics · Mathematics 2016-04-01 Jonas Groschwitz , Tibor Szabó

Waiter-Client games are played on some hypergraph $(X,\mathcal{F})$, where $\mathcal{F}$ denotes the family of winning sets. For some bias $b$, during each round of such a game Waiter offers to Client $b+1$ elements of $X$, of which Client…

For a positive integer $k$ we consider the $k$-vertex-connectivity game, played on the edge set of $K_n$, the complete graph on $n$ vertices. We first study the Maker-Breaker version of this game and prove that, for any integer $k \geq 2$…

Combinatorics · Mathematics 2012-03-16 Asaf Ferber , Dan Hefetz

We introduce and study a Maker-Breaker type game in which the issue is to create or avoid two disjoint dominating sets in graphs without isolated vertices. We prove that the maker has a winning strategy on all connected graphs if the game…

Combinatorics · Mathematics 2014-11-20 Csilla Bujtás , Zsolt Tuza

For a graph G, a monotone increasing graph property P and positive integer q, we define the Client-Waiter game to be a two-player game which runs as follows. In each turn Waiter is offering Client a subset of at least one and at most q+1…

Combinatorics · Mathematics 2016-03-18 Oren Dean , Michael Krivelevich

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

We consider two conjectures made in regard to the graph grabbing game, played on a vertex weighted graph. Seacrest and Seacrest conjectured in 2012 that the first player can win the graph grabbing game on any even-order bipartite graph. Eoh…

Combinatorics · Mathematics 2023-11-07 Lawrence Hollom

We introduce the game of infinite Hex, extending the familiar finite game to natural play on the infinite hexagonal lattice. Whereas the finite game is a win for the first player, we prove in contrast that infinite Hex is a draw -- both…

Combinatorics · Mathematics 2023-08-01 Joel David Hamkins , Davide Leonessi

A well-known result of R\"odl and Ruci\'nski states that for any graph $H$ there exists a constant $C$ such that if $p \geq C n^{- 1/m_2(H)}$, then the random graph $G_{n,p}$ is a.a.s. $H$-Ramsey, that is, any $2$-colouring of its edges…

Combinatorics · Mathematics 2020-10-29 David Conlon , Shagnik Das , Joonkyung Lee , Tamás Mészáros

In this paper, we study algorithms for special cases of energy games, a class of turn-based games on graphs that show up in the quantitative analysis of reactive systems. In an energy game, the vertices of a weighted directed graph belong…

Data Structures and Algorithms · Computer Science 2023-11-17 Sebastian Forster , Antonis Skarlatos , Tijn de Vos