Six chess pieces (one each of king, queen , rook, bishop, knight, and pawn) are hiding in each of the grids below. Each numbered square show how many times that square is attacked. Unlike chess, pawns can be placed on the first or last rank. No two pieces are on the same square, and no piece is on a numbered square. Here is an example of a solved puzzle:
Each puzzle below has a unique solution. All puzzles copyright Erich Friedman, 1999.