Engines have answers. Coaches ask why.Chessalyz does both, and fixes your thinking.
Chessalyz asks what you were thinking, then shows you what you missed.Chessalyz finds the moments that decided your game, asks what you were thinking, works out which step of your thinking failed, then shows you the answer and drills the fix.
Free plan, no card. Five reviews a month. Google sign-in in one tap.
Game review, the way you would with a coach
Find the moment. Chessalyz reads the whole game and stops at the two or three critical moments that decided it.
Thousands of players are chessalyzing their way to faster rating gains.
Your own games, your own thinking, synced automatically from Chess.com and Lichess, or PGNs from your over-the-board games.
More from playersHow a review works
Six steps. Ten minutes. One mistake you stop repeating.
A real moment from a real game.Click through a real moment from a real game. Every screen here is the product, not a mock-up.
2. Matty asks first. The question comes before any answer, and it is about your reasoning, not the engine line.
At the end of the game
A summary that quotes you back to yourself.
Accuracy by phase, the habit costing you games, and what to train next.Accuracy by phase, then the part no engine writes: what your own answers said about your thinking, which habit keeps costing you games, and the one thing to train next.
A resilient win after a sharp middle-game wobble
- Game
- 84.6%vs 81.8%
- Opening
- 83%vs 85.9%
- Middlegame
- 54.1%vs 53.2%
- Endgame
- 98.3%vs 87.4%
Pirc Defense. Your opponent chose a line outside your saved file early, so your preparation was not the issue.
Key takeaways
- The recurring issue was attacking before the position was ready. Ask what improves your pieces and central control before committing to kingside operations.
- Around move 19, the long think points to judgment rather than haste: compare the resulting position after trades, not only the immediate danger removed.
- Your resilience was excellent: after the middle-game setbacks you accepted the new task and finished accurately.
Training. In attacking positions, practice comparing your intended attack with one quiet improving move before committing.
The training loop
Every trainer here starts from a moment in your own game.
The diagnosis picks your next drill.The diagnosis is the router. A missed idea becomes a flashcard. A misjudged endgame sends you to the Conversion trainer. A deviation from your opening prep shows up, in red, in the next review.
The opening trainer
A repertoire built from your opponents, and a report that says where it stands.
The line you missed comes back until it sticks.Every review marks the move where you left your prep. That line comes back on a spaced schedule until it sticks, and the report tells you what is mastered, what is slipping, and what you have never been asked.
143 due for review, 142 never practiced. Answer one and the number drops by one.
- Mastered
- 0
- survived a month-long gap
- Practiced
- 94
- on the schedule, holding
- Learning
- 34
- answered recently, still close in
- Not started
- 157
- never been asked
Mastered is deliberately hard to reach: a position only counts once you have answered it correctly after a gap of a month. A real repertoire spends most of its life in the other three columns.
Grouped by opening
Practise one opening on its own, or take the whole queue. The same report exists for Black, where this repertoire has 294 positions.
For coaches
Host your lessons here. The homework arrives done.
- Host the lesson here: a link, a shared live board, and your student’s own game on it in two clicks.
- End with two takeaways. The lesson files itself in each student’s journal, positions and notes included.
- Between lessons, see who actually reviewed their games and what their own diagnoses said.
30% off for every coach. With 10+ active students the discount goes further, and at 15+ your account is free. One live classroom session a week keeps it.
See the classroom and apply- AAvajoined
- LLeojoined
- MMiajoining…
Share a link. No install, nothing to schedule elsewhere.
What players are saying
Not our words. Theirs.
Chessalyz is an outstanding tool that has helped me to make measurable improvements in my game!
Great article. Great site. I bought a one year subscription early on and wasn’t sure of the decision. Now I am certain to renew! Site gets better all the time.
Screenshots from the Chess.com forums and the Chessalyz community, unedited. More on the testimonials page.
What this replaces
Four subscriptions, one login, and they all know your games.
Every trainer here starts from your own games.Every trainer here starts from your own moments. A tactics site shows you a stranger's puzzle; Chessalyz shows you the one you missed on Tuesday. That is why it is one product and not four tabs.
Review a game free| Elsewhere | Typical, billed monthly |
|---|---|
| Game review that asks, not grades | $8-17 |
| Opening repertoire trainer | $8-12 |
| Spaced-repetition flashcards | $8-12 |
| Tactics and endgame trainers | $5-12 |
| All four, elsewhere | $29-53 |
| Chessalyz Silver, all of it | $4.99 |
Free plan: five reviews a month, no card. Gold at $9.99 for a hundred.
Pricing
Start free. Upgrade when it is working and you want more of it.
More reviews, a bigger repertoire, more drills a day.More reviews a month, a bigger repertoire to prep and practise, more drills a day, and your games analysed first.
Basic
For casual players and those who want to try!
Silver
For regular players who want more analyses.
Gold
For serious players committed to improvement.
Platinum
For coaches, professionals, and power users.
** Analyse every game you play, and play as many Guess the Move games as you want, on your own single account and we will not stop you. If we detect misuse we will tell you, and we reserve the right to rate limit or block the account. See our Fair Usage Policy.
Why Upgrade Your Plan?
More Analyses
Analyze more games per month with higher tier plans
Priority Queue
Get faster analysis with priority processing
Better Support
Access to priority and VIP support channels
- 25 reviews a month, and your games analysed first.
- A repertoire that practises itself, deviations from your games included.
- 25 flashcards a day, and the trainer the diagnosis picks.
Questions
How is this different from the game review on Chess.com or Lichess?
Those grade your moves. Chessalyz asks what you were thinking at the two or three moments that decided the game, works out which step of your thinking failed, and only then explains the position. You leave knowing the best move, why it is best, and why you missed it.
Does it just ask questions, or does it give answers?
Both. The question comes first so your own reasoning is on the table. Then Matty explains with engine-checked lines you can hover, offers the moves to compare, and answers follow-ups in the same thread.
Where do my games come from?
Connect Chess.com or Lichess and games sync automatically, or upload a PGN, including over-the-board games. Chessalyz is not affiliated with either site; it uses their public APIs.
Is it for beginners or strong players?
Both. The depth of questions and explanations follows your rating, and the trainers carry a per-skill rating that moves as you solve.
What is free?
Five reviews a month, flashcards, ten trainer puzzles a day, the opening explorer and a starter repertoire. No card required. Silver is $4.99 a month, Gold $9.99.
Is this just another AI wrapper around an engine?
No. The questions are FM Dalton Perrine’s, a FIDE Master who uses them in his own lessons, so the coaching follows a method that already works on real students. The system underneath was built deliberately by data and machine-learning engineers, led by Varun Kumar, 20 years in tech and 10+ building ML systems: every line Matty quotes is checked against the engine and against your actual game before you see it. That is the difference between a chat window bolted onto an engine and a review you can trust.
How do I delete my account?
Go to Profile, open the Advanced tab and use Delete my account in the Danger Zone, or email [email protected] from the address on your account. Our team deletes your account and all its data within 48 hours and sends you a final confirmation email. On the mobile app the same button is under Profile settings.