Fit the whole piece
Choose one of the three tray pieces, then place it on the eight-by-eight board. The selected square is its top-left origin. Every occupied part must fit inside the board without covering another block. Pieces keep their shown orientation; there is no rotation or falling timer.
Clear full lines
A full row or column disappears after placement, including several lines completed together. Each placed block scores five points and each cleared line adds one hundred. The tray refills after all three pieces are used. The game ends when none of the remaining pieces fits. Use 1–3 to choose and arrows with Enter to place.