Chess 'n' Checkers Puzzles
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 Knight in a Square by The Grabarchuk Family If the knight moves normally, which cell could the knight never reach? Note, in chess, a knight moves two squares in one direction and then one square in a perpendicular direction. Play  |  Download
 The 7 Knights Problem after Martin Gardner It is easy to place 7 chess knights on a 3x3 board. But it becomes a little bit different when there is a rule to move the knight after you place it on the board, don't you say? Play  |  Download
 The Four Queens after Martin Gardner Development of the chess queen theme. This time it's in the little shift that no queen can attack another - simply let 'em live in peace on a small chessboard. Play  |  Download
 Six Knights by Henry E. Dudeney Foxes and Geese is another popular version of this chess black and white knights exchange puzzle that has to be completed in fewest possible moves. Play  |  Download
 The Two Queen Question A minimax problem: find the maximum and the minimum number of attacked vacant cells of a standard chessboard when there are only two chess queens on it. Play  |  Download
 The Knight's Tour 2 by Martin Gardner A chess knight wants to travel around a 6x6 board making the longest possible tour without self-crossings of his route. Can you help him to do it? Play  |  Download
 Three Queens by Martin Gardner Is it possible to place three chess queens on a single non-standard board so that all vacant cells are attacked? How many ways to do this can you find? Play  |  Download
 The Knight's Tour after Martin Gardner Make a knight's tour on a small chess board visiting every cell only once and then returning to the initial cell. You may start from any cell of the board. Play  |  Download
 Unattacked Cells after Martin Gardner Do you believe five chess queens placed on a 5x5 board create a unique pattern when a maximum number of unattacked vacant cells is left? Play  |  Download
 Four Knights by Paulo Guarini di Forli Find the shortest possible way to change the knights - two black knights with two white ones. Of course, just the chess knight's moves are allowed. Play  |  Download

 Last Updated: October 24, 2012 top
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