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Editing Block Retrace Rule
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[[File:Block Retrace.png]] | [[File:Block Retrace.png]] | ||
In this small [[Sokoban level]], Chip must move the | In this small [[Sokoban level]], Chip must move the three blocks to the three [[brown button]]s in order to pass the [[ice]] and [[trap]]s to the exit. Block 2 is directly used on button 3, as it is on the edge of the [[clone machine]]s. Following this, the rule can be used on the other two buttons. Move block 3 R, following the [[Block Donut Rule]], and push block 1 only 3U 4R, not 3U 4R D. The D move will be accomplished from a more advantageous position, U off the block rather than from L off, when block 3 is moved to button 1. | ||
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Note that the above situation is another, more limited case of the rule, as the second button press is retraced in itself. It will use 2 moves in comparison to moving the block 3U 4R D immediately; most cases will not spend any extra moves at all. | |||
[[Category:Mechanics]] | [[Category:Mechanics]] | ||
[[Category:Terminology]] | [[Category:Terminology]] | ||
[[Category:Player strategies]] | [[Category:Player strategies]] |