Inverse LITSO
Place one tetromino in every region and keep all shaded cells connected.
Controls
Shade exactly one tetromino of four orthogonally connected cells in every outlined region; the shape may be L, I, T, S or O. All shaded cells must form one orthogonally connected area. Two identical tetrominoes may not share an edge, and no 2×2 block may be fully shaded. Tap a cell to shade or clear it; use Clear and the answer button.
Brain training · PuzGo