Tetro Chain CTB
Place connected tetrominoes and satisfy the region counts.
Controls
Place tetrominoes of four orthogonally connected cells. Tetrominoes may not touch orthogonally; two that touch at a corner must have different shapes. All tetrominoes must form one diagonally connected chain. A number in a region counts the shaded cells in that region, and every tetromino must cross at least one region border. Tap cells to shade or clear them, use Clear and the answer button.
Brain training · PuzGo