Tetromino-Pentomino Cell Shifts

The cell-shifting problem is to construct two polyforms that can be tiled by specified polyforms and that differ in the position of just one cell. Here are minimal known cell shifts for tetromino-pentomino pairs.

If you find a shorter shift or a smaller solution, or solve an unsolved case, please write.

 5F5I5L5N5P5T5U5V5W5X 5Y5Z
4I 1,0 8,10 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 8,10 1,0 4,5 1,0 4,5 — 1,0 4,5 1,0 12,15
4L 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,1 4,5 1,0 4,5 1,0 4,5
4N 1,0 4,5 1,0 8,10 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 2,0 4,5 1,0 4,5 1,1 8,10 1,0 4,5 1,0 4,5
4Q 1,0 12,15 1,0 12,15 1,0 4,5 1,0 8,10 1,0 4,5 ? ? 5,0 4,5 1,0 28,35 — 1,0 8,10 1,0 12,15
4T 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 8,10 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5 1,0 4,5

5 Tetrominoes, 4 Pentominoes

More Tetrominoes and Pentominoes

Last revised 2018-10-25.

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Col. George Sicherman [ HOME | MAIL ]