Block Retrace Rule: Difference between revisions

In this small [[Sokoban level]], Chip must move the two blocks to the two [[brown button]]s in order to pass the [[trap]]s to the exit. The rule can be applied as follows: move block 1 3R, instead of moving it 3R D onto trap button 2. The D move will be accomplished from a more advantageous position. Move block 2 2U 5R onto trap 1, then immediately move D to push block 1 from before into place. This rule saves two [[In-game second#Move|move]]s compared to the naive approach of focusing on only one block at a time.