Other puzzle sites grade your accuracy. ClutchChess grades your accuracy under the clock.
- Clutch Rating
- A rating that measures how well you perform under pressure, not just how much chess you know.
- Targeted Drills
- Clutch Sprint, Conversion, Survival, Chaos, Bullet Panic, and Endgame Pressure. Train the scenarios where you lose on time.
- Puzzle of the Day
- One shared puzzle every day. Build a streak by solving it before the daily reset.
- Real Weaknesses
- Link Lichess or Chess.com to find exactly where your clock management breaks down.
Why ClutchChess is different
The chess you actually play has a clock. Your training should too.
Most puzzle sites
- Solve at your own pace, no clock pressure
- One rating that averages every kind of position together
- Solve against a stored answer key
- “Correct” or “Wrong” is the whole feedback
ClutchChess
- The clock is part of the test, like in a real game
- Five pressure sub-ratings show exactly where you crack
- Play it out against a real Stockfish opponent
- Coach's Note explains the idea after every solve
About
Why this exists, and the bet behind it.
Hi! My name is Thomas and I like to play chess. However, after playing in many tournaments online and over the board, I realized a pattern from my losses. The time on my clock. Every game I lost had to do with the amount of time I had left, and I always wanted to be better in time pressure situations. With this in mind, I created ClutchChess.
Most chess players don't lose because they didn't know the right move. They lose because they couldn't find it in time. The clock decides more blitz and bullet games than pure calculation ever does.
Traditional puzzle trainers ignore this. They measure whether you eventually arrive at the right answer, with unlimited time to look. Real games don't give you that. By the time you spot the threat on a standard puzzle, you've already burned the seconds you needed.
ClutchChess isn't a puzzle solver with a timer bolted on. Every piece of the system, including the time limits scaled to position complexity, the speed and pressure modifiers on your rating, and the multi-move engine that plays back like a real opponent, exists to train the one skill that matters when the flag is about to fall: deciding under pressure.
The goal isn't to make you better at puzzles. It's to make you better when it counts.
Puzzles sourced from the Lichess open puzzle database, released under CC0 1.0. ClutchChess is an independent project and is not affiliated with or endorsed by Lichess.
How it works
Chess puzzles, but the clock is part of the test. Every drill measures how well you decide under time pressure.
- STEP 1
Pick a category
Conversion, Survival, Chaos, Endgame Pressure, or Bullet Panic. Each scenario builds its own rating, so you see exactly which kind of position you crack under.
- STEP 2
Play it out, don’t just spot it
Every puzzle plays out interactively against Stockfish at your chosen level, not a fixed answer key. You don’t need the engine’s top move; keep the advantage through the continuation and the objective counts as solved, the way real games actually go.
- STEP 3
Earn rating for how you got there
Fast and accurate amplifies your gain. Solving with seconds left adds a pressure bonus. Slow but correct still works, just for less. Streaks add momentum.
What separates this from other puzzle apps
Most puzzle trainers ask one question: do you know the right move? Your rating only tracks accuracy. ClutchChess asks a second question: can you find it under the clock?
- Five pressure sub-ratings surface the specific scenario where you crack, instead of one rating that averages everything together.
- Speed and pressure modifiers actually adjust your rating. A fast accurate solve is worth more than the same move played slowly.
- Every puzzle plays interactively against Stockfish at your chosen level, not a stored line. A sloppy reply gets punished the way it would in a real game.
- Non-perfect moves can still solve the objective. Hold the advantage through the continuation and the puzzle counts as solved. You’re training realistic decisions, not memorising the single engine top move.
- Every solved puzzle ends with a Coach's Note explaining the idea, rather than just a correct/incorrect check.
- Link your Chess.com or Lichess account and ClutchChess will analyse your last two months of rated games to surface exactly where you crack under the clock, then recommend drills targeting that weakness.
How the clock works
Every puzzle has a per-move clock. You get the same number of seconds on each of your moves, and the timer resets when the engine replies. The budget depends on what kind of puzzle it is and how hard it is.
- Bullet-style puzzles give you about 7 to 11 seconds per move. The whole skill is deciding fast.
- Endgame puzzles give you up to 40 to 50 seconds per move, because technique takes thought.
- Easier tiers get a bit less time, harder tiers get a bit more. The floor is 7 seconds per move and the ceiling is around 50.
Each drill runs for 5 to 7 of your moves, so a single puzzle takes anywhere from about 35 seconds to roughly 6 minutes of wall-clock time.
Common questions
What's the purpose of this app?
ClutchChess trains the part of chess most apps ignore: deciding under the clock. In a real game, knowing the right move isn't enough. You have to find it before your time runs out, and you have to keep playing well after that. ClutchChess turns that into the actual test. Every puzzle has a per-move timer, and your rating goes up faster when you solve quickly and with the clock pressing down on you. The goal is simple: close the gap between your puzzle rating and what you actually do in real games.
How is this different from traditional puzzle apps?
Most puzzle apps ask one question: do you know the right move? Your rating just tracks accuracy. ClutchChess asks a second question: can you find it under pressure? Your speed and how much time was on the clock both change your rating, the way they change real game results.
Three concrete differences:
- It's not just spot-the-move. Every puzzle plays out interactively against Stockfish for several moves. You don't just need to find one good move; you need to keep the advantage through the continuation. Sloppy follow-up gets punished, the way a real game would punish it.
- You don't need the engine's perfect move. Hold the objective (convert the win, save the draw, hold the endgame) and the puzzle counts as solved. You're training realistic decisions, not memorising top engine lines.
- It splits your weakness apart. Instead of one puzzle rating, you get five sub-ratings, one for each kind of pressure scenario: Bullet Panic, Chaos, Conversion, Survival, and Endgame Pressure. So you can actually see “I'm fine in tactics but I blow winning endgames” and train exactly that.
On top of that, if you link your Chess.com or Lichess account, ClutchChess looks at your last two months of rated games and tells you specifically where you lose under pressure, then recommends drills targeting that weakness.
Who is this app for?
All chess players. Whether you're a beginner learning patterns, a club player working through a plateau, a tournament player preparing for serious games, or a grandmaster polishing technique under pressure, the app scales to your level. Five difficulty tiers (Beginner through Master) and your own rating set the challenge so every drill stays appropriate to where you currently are.
That said, it's especially built for anyone who plays online rapid, blitz, or bullet and notices their results don't match their puzzle rating. If you've ever thought “I knew the right move, I just didn't have time,” or you keep blowing winning positions in time scrambles, this is built for you. Tournament players who freeze in time pressure get the most out of it, but anyone who wants to train the practical side of chess instead of just pattern recognition will get value from it.