Grid chess is a chess variant invented by Walter Stead in 1953. It is played on an ordinary 64-square chessboard that carries an extra grid of lines dividing it into larger blocks. In the original and by far the most popular arrangement, the grid splits the board into sixteen blocks of two squares by two squares. A single additional rule governs play: for a move to be legal, the moving piece must cross at least one grid line. A piece therefore cannot step between two squares of the same block, so a bishop may need two moves to reach a square it could reach in one move in standard chess, and two kings can stand next to each other when both are inside the same block. Grid chess is also used in chess problems, and a helpmate in four by H. Ternblad, published in Fairy Chess Review in 1954, won first prize in the first Grid chess problem tournament.
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1. Grid chess (Wikipedia)
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Grid chess is a chess variant invented by Walter Stead in 1953.
Lead paragraph
It is played on a grid board.
View the SourceGambiter: Grid chess - chess variant
GambiterDescription, sample position played by White and BlackQuote, Description, sample position played by White and Black
In the sample position, White can play either a3 or a4, but cannot move his b-pawn.
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