No clue window reaches the yellow cells — only their row and column watch them. With so few connections, domino chains die here, and these cells linger into the endgame. The hard part is built into the board from the start. Spot the blind zone early, and you can predict where you will get stuck.

In the app, one new tip arrives for each day you play.

▶ Try 50 rounds in your browser A free demo, no install. All 2,000 rounds are in the app.