Techniques › 2 of 9
Simple Boxes (Clue Overlap)
Level 1: Easy
Push each block as far one way and then the other; cells covered both times must be filled.
Slide the 7-block as far left as it goes: it covers cells 1 to 7. Slide it as far right: cells 4 to 10. Whatever it covers in both positions is certain.
The more a clue fills the line, the bigger the overlap. A clue longer than half the line always overlaps itself in the middle.
With several blocks, do this for each block separately, packing all blocks to one side and then the other.