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We study the periodicity of nim-sequences for subtraction games having subtraction sets with three elements. In particular, we give solutions in several cases, and we describe how these subtraction sets can be augmented by additional…

Combinatorics · Mathematics 2014-12-25 Nhan Bao Ho

Subtraction games is a class of impartial combinatorial games, They with finite subtraction sets are known to have periodic nim-sequences. So people try to find the regular of the games. But for specific of Sprague-Grundy Theory, it is too…

Computer Science and Game Theory · Computer Science 2015-03-20 Zhihui Qin , Guanglei He

Subtraction games are a class of impartial combinatorial games whose positions correspond to nonnegative integers and whose moves correspond to subtracting one of a fixed set of numbers from the current position. Though they are easy to…

Combinatorics · Mathematics 2014-07-11 Nathan Fox

We generalize the results and conjectures of Tam\'{a}s Lengyel, showing that the \textsc{nim}-values of a large class of two-dimensional subtraction-transfer games are periodic. These are impartial, normal-play games with two piles of…

Combinatorics · Mathematics 2026-05-25 Alon Danai , Paul Ellis , Thotsaporn Aek Thanatipanonda

In a recent arXiv-manuscript Fox studies infinite subtraction games with a finite (ternary) and aperiodic Sprague-Grundy function. Here we provide an elementary example of a game with the given properties, namely the game given by the…

Combinatorics · Mathematics 2015-03-26 Urban Larsson

Subtraction games are a classical topic in Combinatorial Game Theory. A result of Golomb~(1966) shows that every subtraction game with a finite move set has an eventually periodic nim-sequence, but the known proof yields only an exponential…

Combinatorics · Mathematics 2026-03-18 Anjali Bhagat , Urban Larsson , Hikaru Manabe , Takahiro Yamashita

We study algorithms for solving Subtraction games, which sometimes are referred to as one-heap Nim games. We describe a quantum algorithm which is applicable to any game on DAG, and show that its query compexity for solving an arbitrary…

Quantum Physics · Physics 2018-08-13 Kamil Khadiev , Dmitry Kravchenko

Subtraction games are played with one or more heaps of tokens, with players taking turns removing from a single heap a number of tokens belonging to a specified subtraction set; the last player to move wins. We describe how to compute the…

Data Structures and Algorithms · Computer Science 2018-04-19 David Eppstein

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

A Subtraction-Division game is a two player combinatorial game with three parameters: a set S, a set D, and a number n. The game starts at n, and is a race to say the number 1. Each player, on their turn, can either move the total to n-s…

Combinatorics · Mathematics 2012-06-05 Elizabeth Kupin

A new combinatorial game is given. It generalizes both Substraction and Nim. It is proved the computation of Nash equilibrium points in this new game is NP-hard.

Computer Science and Game Theory · Computer Science 2024-08-27 Chunlei Liu

\textsc{cut} is a class of partition games played on a finite number of finite piles of tokens. Each version of \textsc{cut} is specified by a cut-set $\mathcal{C}\subseteq\mathbb{N}$. A legal move consists of selecting one of the piles and…

Combinatorics · Mathematics 2022-03-07 Paul Ellis , Thotsaporn Aek Thanatipanonda

This paper extends the work done by Angela Siegel on subtraction games in which the subtraction set is N \ X for some finite set X. Siegel proves that for any finite set X, the G-sequence is ultimately arithmetic periodic, and that if |X| =…

Combinatorics · Mathematics 2012-01-17 Danny Sleator , Marla Slusky

In this article, we study the behavior of a broad family of real sequences derived from randomized one-pile subtraction games. For any subtraction set $S$, we allow any valid number of chips $s\in S$ to be removed at equal probability at…

Combinatorics · Mathematics 2024-05-31 Nicolas Capitelli , Francisco Somma

We introduce a class of normal play partizan games, called Complementary Subtraction. Let $A$ denote your favorite set of positive integers. This is Left's subtraction set, whereas Right subtracts numbers not in $A$. The Golden Nugget…

Combinatorics · Mathematics 2015-10-27 Urban Larsson , Neil A. McKay , Richard J. Nowakowski , Angela A. Siegel

We study zero-sum games, a variant of the classical combinatorial Subtraction games (studied for example in the monumental work "Winning Ways", by Berlekamp, Conway and Guy), called Cumulative Subtraction (CS). Two players alternate in…

Combinatorics · Mathematics 2020-02-14 Gal Cohensius , Urban Larsson , Reshef Meir , David Wahlstedt

The present paper deals with connected subtraction games in graphs, which are generalization of takeaway games. In a connected subtraction game, two players alternate removing a connected sub-graph from a given connected game-graph,…

Combinatorics · Mathematics 2026-04-17 Antoine Dailly , Julien Moncel , Aline Parreau

In this paper, we study a combination (called the generalized cyclic Nimhoff) of the cyclic Nimhoff and subtraction games. We give the $\mathcal{G}$-value of the game when all the $\mathcal{G}$-value sequence of subtraction games have a…

Combinatorics · Mathematics 2019-09-27 Tomoaki Abuku , Masanori Fukui , Ko Sakai , Koki Suetsugu

We consider a subtraction Nim with subtraction set {s_1,s_2,s_3={2,4n,4n+2}, where n is a positive integer such that n >= 3. We do not treat the case that n=1 or n=2 in this article. We show that this game satisfies the reverse-mex property…

Combinatorics · Mathematics 2026-05-15 Urban Larsson , Hikaru Manabe , Ryohei Miyadera

Subtraction games is a class of combinatorial games. It was solved since the Sprague-Grundy Theory was put forward. This paper described a new algorithm for subtraction games. The new algorithm can find win or lost positions in subtraction…

Computer Science and Game Theory · Computer Science 2012-08-31 Guanglei He , Zhihui Qin
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