Logic puzzles online with working grids
Mark each pairing as unknown, impossible or confirmed. Check your solution when every row has a confirmed match.
Updated
Ivo, Lea, and Mina present at 9, 10, and 11, one person per time. Ivo presents at 9. Lea is not at 9. Mina is not at 10. Who presents at 10?
Tap a square to cycle through unknown, impossible and confirmed. Keyboard: Tab to a square, then press Enter or Space.
Ivo uses 9. Mina cannot use 9 or 10, so Mina uses 11. The remaining time, 10, belongs to Lea.
