Phutball

Phutball (short for philosopher 's football) is a strategic board game for two people. It is bordered by Elwyn Berlekamp, John Horton Conway and Richard Guy in her book profits - Strategies for math games described.

Regulate

Preparation

The game is played on a board with 15 x 21 intersections, the stones are placed on the course of the game. The rows are numbered from 0 to 20 ( the rows 0 and 20 are often omitted, as in the image ). There is a white and an in principle unlimited number of black stones. The white stone is the "ball" and is located at the beginning of the dot in the middle of the board, which is otherwise empty.

Set or jumping

Players take turns. The player on the train must either put a black stone on a free point to row 1 to 19, or with the ball skip black stones in an orthogonal or diagonal direction and beat it. One can propose one or a series of several stones in a jump, but must by skipping no free point. The ball lands on the first free point behind the skipped stones. After each jump the beaten stones are the same distance, (but need not) then the train can be continued with further jumps.

Target

The goal of player A is to bring the ball to number 19 or 20, and Player B must be amended to show the ball number 1 or 0. Whoever succeeds, thus ending the game immediately and wins. It just depends on the position of the ball after the last jump, for example, may jump to row 1 or 0 Player A when the ball leaves this again in the same train.