Neutron (1978)

In Neutron, players have two sets of subatomic particles and have to force a neutron to bounce towards their side.

Neutron rules were published in issue 71 of Games & Puzzles.
It is an abstract game for two, played on a 5x5 square board. All pieces move in a straight line in one of the 8 directions, and they cannot stop until they find an obstacle. There is no capturing.
On each turn, each player must move both one of his own pieces, and the "neutron", a common piece initially put on the center of the board. Moving and forcing the neutron into your home row, or blocking it completely so that it cannot move, is the object of the game.

An abstract game that can be played with a standard board and a coin, that is very simple and deep.

Somebody told me about a published commercial version of the game, but I couldn't find any information about it. Others suggest that this game has actually never been published.