PetDoku

"Peekaboo - can you find me?" The pets are already hiding, waiting for you to track them down. Each color region, row and column holds exactly one pet, and no two pets may ever touch - not even diagonally. Double-tap a cell to place a pet, tap once to mark an X where none can hide, and drag to mark a whole row. All 5,000 stages are solvable by deduction alone, so you never have to guess. Unlock 100 pets, take on the daily challenge, and collect a birthstone trophy every month.