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Hoezee
simple swap
Two solutions are related by a 'simple swap' if all tiles are identical, apart from two tiles forming a rectangle, appearing in reverse order.
 Plaats onregelmatige tegelsets in een invoervak. |
Plaats onregelmatige tegelsets in een invoervak. |
compound swap
Two solutions are related by a 'compound swap' if all tiles are identical, apart from a number of two forming a rectangle, appearing in reverse order.