Neutron is a two-player abstract strategy game invented by Robert A. Kraus. The game was first published in the Playroom section of Games & Puzzles 71 in July/August 1978. It is a game where each player moves two different pieces in a single turn without the use of dice.
There are 15 variants to this game. Neutron and some of its variants are some of the main games featured in Zillions of Games.
The game has been solved to some degree. Analysis has shown that the first player wins.[citation needed] It is unknown whether the other variants have been solved or not, and to what degree.
It is normally played on a 5 x 5 board. (Some variants of the game use different sized boards). Each player has five pieces, and there is also a neutral piece called the Neutron that is played by both players.