My Best Mathematical and Logic PuzzlesTurtleback, 1994 - 82 pàgines Noted expert selects 70 short puzzles. The Returning Explorer, The Mutilated Chessboard, Scrambled Box Tops, and 67 more. Solutions included. |
My Best Mathematical and Logic PuzzlesTurtleback, 1994 - 82 pàgines Noted expert selects 70 short puzzles. The Returning Explorer, The Mutilated Chessboard, Scrambled Box Tops, and 67 more. Solutions included. |