Twin Block

How to play

1. Drag a block onto the board, or tap it and then tap the cell for its top-left corner.
2. The copy appears across the center. The preview shows both.
3. A block that would land on its own copy cannot be placed.
4. A full row or column fades away.
5. The round ends when no block fits in both places.

About

Every placement also writes the block's 180° copy around the center of the 8×8 board. Both copies must sit on empty cells and must not overlap. A full row or column disappears.