Rensa Lab

Rensa Lab teaches chain puzzles — the kind where falling blocks clear in groups of four and set off chains — through a problem book. Place your pieces and see right away how many chains you made. ■ Explanations that tell you why When you miss, we show what actually happened on the board: which group you cleared too early, where the falling blocks joined only a few and stopped, and where the trigger was. Replay the answer chain one step at a time. ■ 7 units, 210 problems Basics → Find the trigger → Stair links → Sandwich links → Building 101 → Long chains → Advanced building. Start easy and work your way up. ■ Today's Problem A new problem every day at midnight — easiest on Monday, hardest on Sunday. Home Screen and Lock Screen widgets show today's problem and open it in one tap. ■ Easy on the eyes A paper-toned background, soft text color and large type. Every color has its own shape…