Fourfold Register
Print a perfect fourfold ledger: fill rows 2–5 with exactly FOUR L-shaped stamps, then Register all FOUR rows together. Gold seals are fixed. Tap the top-left corner of a stamp footprint to place it; pieces do not fall. Rotate changes the next stamp, and Undo lifts the last placement. Individual full rows stay in place, so plan the entire packing rather than clearing early. The top row is a margin, not printable. No automatic defeat.
Tap tiles, or use Tab and Enter. Arrow keys move board focus.
Challenge notes & source
No automatic defeat: use the available planning tools or Reset to try a different solution.
Round 2 redesign: Print a perfect fourfold ledger: fill rows 2–5 with exactly FOUR L-shaped stamps, then Register all FOUR rows together. Gold seals are fixed. Tap the top-left corner of a stamp footprint to place it; pieces do not fall. Rotate changes the next stamp, and Undo lifts the last placement. Individual full rows stay in place, so plan the entire packing rather than clearing early. The top row is a margin, not printable. No automatic defeat.
Original compact interpretation, not a recreation. Source study: Quatris. No source code, music or artwork copied.