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We introduce the notion of invariant vectors of a game and develop the Invariance Reduction Process, which first uses reduction of positions via invariance and then zero and merge reductions of games to arrive at smaller, solved sub-games…

Combinatorics · Mathematics 2026-04-06 Balaji R. Kadam , Matthieu Dufour , Silvia Heubach

In this paper, we introduce and examine a variant of the game of Nim (Sharing Nim), where players can either remove or transfer objects from 1 pile to another. The only restriction is that players may not transfer objects from a pile of…

Combinatorics · Mathematics 2020-08-05 Donghyun Kim

We introduce Multiplicative Modular Nim (MuM), a variant of Nim in which the traditional nim-sum is replaced by heap-size multiplication modulo m. We establish a complete theory for this game, beginning with a direct, Bouton-style analysis…

Discrete Mathematics · Computer Science 2025-07-15 Satyam Tyagi

Given a graph G and an integer k, two players take turns coloring the vertices of G one by one using k colors so that neighboring vertices get different colors. The first player wins iff at the end of the game all the vertices of G are…

Combinatorics · Mathematics 2007-07-04 Tom Bohman , Alan Frieze , Benny Sudakov

The $k$-majority game is played with $n$ numbered balls, each coloured with one of two colours. It is given that there are at least $k$ balls of the majority colour, where $k$ is a fixed integer greater than $n/2$. On each turn the player…

Combinatorics · Mathematics 2014-02-25 John R. Britnell , Mark Wildon

The list coloring problem is a variation of the classical vertex coloring problem, extensively studied in recent years, where each vertex has a restricted list of allowed colors, and having some variations as the $(\gamma,\mu)$-coloring,…

Computational Complexity · Computer Science 2019-01-01 Simone Gama , Rosiane de Freitas , Mário Salvatierra

Yama Nim is a two heaps Nim game introduced in the second author's Master Thesis, where the player takes more than $2$ tokens from one heap, and return $1$ token to the other heap. Triangular Nim is a generalization, where the player takes…

Combinatorics · Mathematics 2023-10-11 Shun-ichi Kimura , Takahiro Yamashita

We combine the ideas of edge coloring games and asymmetric graph coloring games and define the \emph{$(m,1)$-edge coloring game}, which is alternatively played by two players Maker and Breaker on a finite simple graph $G$ with a set of…

Combinatorics · Mathematics 2025-02-18 Runze Wang

We study the hat chromatic number of a graph defined in the following way: there is one player at each vertex of a loopless graph $G$, an adversary places a hat of one of $K$ colors on the head of each player, two players can see each…

Combinatorics · Mathematics 2019-05-13 Bartłomiej Bosek , Andrzej Dudek , Michał Farnik , Jarosław Grytczuk , Przemysław Mazur

We study the applicability of quantum algorithms in computational game theory and generalize some results related to Subtraction games, which are sometimes referred to as one-heap Nim games. In quantum game theory, a subset of Subtraction…

Quantum Physics · Physics 2020-06-15 Dmitry Kravchenko , Kamil Khadiev , Danil Serov , Ruslan Kapralov

In this paper, we consider combinatorial game rulesets based on data structures normally covered in an undergraduate Computer Science Data Structures course: arrays, stacks, queues, priority queues, sets, linked lists, and binary trees. We…

Data Structures and Algorithms · Computer Science 2016-05-23 Mara Bovee , Kyle Burke , Craig Tennenhouse

The study of the combinatorial game Nim and its variants is rich and varied, but little is known of the game Nim with a Pass. It is Nim, but once per game a player is permitted to skip their turn but this can only be done if a nonempty pile…

Combinatorics · Mathematics 2020-10-22 Emet Hirsch

Several variations of hat guessing games have been popularly discussed in recreational mathematics. In a typical hat guessing game, after initially coordinating a strategy, each of $n$ players is assigned a hat from a given color set.…

Combinatorics · Mathematics 2011-01-20 Tengyu Ma , Xiaoming Sun , Huacheng Yu

The network coloring game has been proposed in the literature of social sciences as a model for conflict-resolution circumstances. The players of the game are the vertices of a graph with $n$ vertices and maximum degree $\Delta$. The game…

Discrete Mathematics · Computer Science 2022-04-01 Nikolaos Fryganiotis , Symeon Papavassiliou , Christos Pelekis

The eternal graph colouring problem, recently introduced by Klostermeyer and Mendoza, is a version of the graph colouring game, where two players take turns properly colouring a graph. In this note, we study the eternal game chromatic…

Combinatorics · Mathematics 2021-03-02 Vojtěch Dvořák , Rebekah Herrman , Peter van Hintum

We propose a new coloring game on a graph, called the independence coloring game, which is played by two players with opposite goals. The result of the game is a proper coloring of vertices of a graph $G$, and Alice's goal is that as few…

Combinatorics · Mathematics 2021-03-26 Boštjan Brešar , Daša Štesl

We investigate a variation of the graph coloring game, as studied in [2]. In the original coloring game, two players, Alice and Bob, alternate coloring vertices on a graph with legal colors from a fixed color set, where a color {\alpha} is…

Combinatorics · Mathematics 2014-12-10 Michel Alexis , Davis Shurbert , Charles Dunn , Jennifer Nordstrom

Cram, Domineering, and Arc Kayles are well-studied combinatorial games. They are interpreted as edge-selecting-type games on graphs, and the selected edges during a game form a matching. In this paper, we define a generalized game called…

Data Structures and Algorithms · Computer Science 2022-11-11 Tesshu Hanaka , Hironori Kiya , Hirotaka Ono , Kanae Yoshiwatari

The 2-player impartial game of Wythoff Nim is played on two piles of tokens. A move consists in removing any number of tokens from precisely one of the piles or the same number of tokens from both piles. The winner is the player who removes…

Combinatorics · Mathematics 2010-10-29 Urban Larsson

We study a combinatorial game derived from a problem in the German National Mathematics Competition. In this game, two players take turns removing numbers from a finite set of natural numbers, aiming to satisfy a certain divisibility…

Combinatorics · Mathematics 2025-08-04 Tim Rammenstein