Fewest moves

An hour, a pen and paper: the shortest written solution wins.

Systems

Fewest moves

An hour and paper for the shortest solution: a start, a skeleton, insertions; or edge orientation and domino reduction.

Edge orientation

Domino reduction

Skeleton and insertions

NISS and premoves

Guides

Fewest moves

Solve on paper in as few moves as you can: blocks, edge orientation, domino reduction, skeletons and insertions.