Open Puzzles, Puzzle Rush. Puzzles get harder with every one.

Modes
- 3 min: three minutes on the clock.
- 5 min: five minutes on the clock.
- Survival: no clock. How far can you go?
Rules
- Three misses and the run is over (three lives).
- A correct answer is +1. Mistakes take a life.
- When you run out of lives you can watch a rewarded ad for one more life to carry on (app only).
- At the end you see your score, your personal best and the hardest puzzle you solved. Missed puzzles join your review queue.
- There is a leaderboard (today, this week and more). Guests are not on the leaderboards.
Rush Battle
Puzzles, Rush Battle: race other players through the same puzzles for three minutes. The highest score wins.

Why it works
Rush trains the speed of seeing patterns. Do it for 10 minutes a day on top of normal puzzles, not instead of them.
Tip: if you keep missing, slow down: a clean run of 20 beats a rushed run of 12.
Open in the app: https://chessgm.net/puzzles/rush
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chessGM is not affiliated with Chess.com, Lichess or Stockfish; they are named only to say what the app can read or compare with.