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Nim is a well-known combinatorial game in which two players alternately remove stones from distinct piles. A player who removes the last stone wins under the normal play rule, while a player loses under the mis\`ere play rule. In this…

Combinatorics · Mathematics 2026-03-10 Hiromi Oginuma , Masato Shinoda

Fibonacci nim is a popular impartial combinatorial game, usually played with a single pile of stones. The game is appealing due to its surprising connections with the Fibonacci numbers and the Zeckendorf representation. In this article, we…

Combinatorics · Mathematics 2015-09-30 Urban Larsson , Simon Rubinstein-Salzedo

In 1901, Bouton proved that a winning strategy of the game of Nim is given by the bitwise XOR, called the nim-sum. But, why does such a weird binary operation work? Led by this question, this paper introduces a categorical reinterpretation…

Combinatorics · Mathematics 2025-11-17 Ryuya Hora

Conway Checkers is a game played with a checker placed in each square of the lower half of an infinite checkerboard. Pieces move by jumping over an adjacent checker, removing the checker jumped over. Conway showed that it is not possible to…

Combinatorics · Mathematics 2025-12-05 Glenn Bruda , Joseph Cooper , Kareem Jaber , Raul Marquez , Steven J. Miller

Nim is a well-known combinatorial game with several variants, e.g., Delete Nim and Variant Delete Nim. In Variant Delete Nim, the player deletes one of the two heaps of stones and splits the other heap on his/her turn. In this paper, we…

Combinatorics · Mathematics 2023-01-31 Tomoaki Abuku , Ko Sakai , Masato Shinoda , Koki Suetsugu

This work is concerned with the study of the Game of Graph Nim -- a class of two-player combinatorial games -- on graphs with $4$ edges. To each edge of such a graph is assigned a positive-integer-valued edge-weight, and during each round…

Combinatorics · Mathematics 2025-09-08 Sayar Karmakar , Moumanti Podder , Souvik Roy , Soumyarup Sadhukhan

A circular Nim game is a two player impartial combinatorial game consisting of n stacks of tokens placed in a circle. A move consists of choosing k consecutive stacks, and taking at least one token from one or more of the k stacks. The last…

Combinatorics · Mathematics 2012-11-02 Matthieu Dufour , Silvia Heubach

Circular Nim is a two-player impartial combinatorial game consisting of $n$ stacks of tokens placed in a circle. A move consists of choosing $k$ consecutive stacks and taking at least one token from one or more of the stacks. The last…

Combinatorics · Mathematics 2024-04-11 Matthieu Dufour , Silvia Heubach

The ordinary game of Nim has a long history and is well-known in the area of combinatorial game theory. The solution to the ordinary game of Nim has been known for many years and lends itself to numerous other solutions to combinatorial…

Combinatorics · Mathematics 2012-08-29 Lindsay Erickson , Warren Shreve

We play a variation of Nim on stacks of tokens. Take your favorite increasing sequence of positive integers and color the tokens according to the following rule. Each token on a level that corresponds to a number in the sequence is colored…

Combinatorics · Mathematics 2016-02-26 Michael Fisher , Urban Larsson

In this paper, we propose a Quantum variation of combinatorial games, generalizing the Quantum Tic-Tac-Toe proposed by Allan Goff. A combinatorial game is a two-player game with no chance and no hidden information, such as Go or Chess. In…

Discrete Mathematics · Computer Science 2018-03-06 Paul Dorbec , Mehdi Mhalla

Recently, a standardized framework was proposed for introducing quantum-inspired moves in mathematical games with perfect information and no chance. The beauty of quantum games-succinct in representation, rich in structures, explosive in…

Computational Complexity · Computer Science 2020-11-10 Kyle Burke , Matthew Ferland , Shang-Hua Teng

The game of Nim, which has been well known for many years, has numerous variations. One such variation is Circular Nim, where piles of stones are arranged on a circumference, and players take stones from consecutive adjacent piles in one…

Combinatorics · Mathematics 2024-11-13 Hiromi Oginuma , Masato Shinoda

New combinatorial games are introduced, of which the most pertinent is Maharaja Nim. The rules extend those of the well-known impartial game of Wythoff Nim in which two players take turn in moving a single Queen of Chess on a large board,…

Combinatorics · Mathematics 2012-07-04 Urban Larsson , Johan Wästlund

This paper considers a reach-avoid differential game in three-dimensional space with four equal-speed players. A plane divides the game space into a play subspace and a goal subspace. The evader aims at entering the goal subspace while…

Optimization and Control · Mathematics 2019-04-08 Rui Yan , Zongying Shi , Yisheng Zhong

We introduce CUT, the class of 2-player partition games. These are NIM type games, played on a finite number of heaps of beans. The rules are given by a set of positive integers, which specifies the number of allowed splits a player can…

Combinatorics · Mathematics 2026-04-17 Antoine Dailly , Eric Duchene , Urban Larsson , Gabrielle Paris

Wythoff's Nim is a variant of 2-pile Nim in which players are allowed to take any positive number of stones from pile 1, or any positive number of stones from pile 2, or the same positive number from both piles. The player who makes the…

Combinatorics · Mathematics 2024-08-08 Mirabel Hu , Daniel Sleator , William Tsin

In this paper, we give simple NP-hardness reductions for three popular video games. The first is Baba Is You, an award winning 2D block puzzle game with the key premise being the ability to rewrite the rules of the game. The second is Fez,…

Computational Complexity · Computer Science 2022-02-23 Matthew Ferland , Vikram Kher

We study chip-firing games on multigraphs whose underlying simple graphs are trees, paths, and stars, denoted as banana trees, paths, and stars respectively. We present a polynomial time algorithm to compute the divisorial gonality of…

We consider quantum variants of Parrondo games on low-dimensional Hilbert spaces. The two games which form the Parrondo game are implemented as quantum walks on a small cycle of length $M$. The dimension of the Hilbert space is $2M$. We…

Quantum Physics · Physics 2023-06-30 Andreas Mielke