The short version. Paste your game — or just type your chess.com or Lichess username — into the free game review and it finds the one move where the evaluation flipped, marks it on the eval graph, and tells you what went wrong, in plain English, in about 30 seconds. No account, no install, no daily limit on pasted games. It runs Stockfish right in your browser.
Most players lose a game, feel vaguely bad about it, and move on. A review turns that vague feeling into a specific, fixable fact: here is the move where you went from fine to lost. Below master level, games are almost never lost gradually — the evaluation graph shows a cliff, not a slope. One move, one moment, and the game tips. A good review's whole job is to find that cliff and name it, so you're studying the thing that actually decided the game instead of staring at the wall of "inaccuracy" flags that didn't matter.
What it does not tell you is "play 23.Qe4 next time and you're fine." Memorizing the engine's fix for one position teaches you nothing — you'll never see that exact position again. The value is in the kind of mistake: did you miss a tactic, make a bad trade, or play a slow move while you were under attack? That's the part that repeats, and that's the part worth fixing. (We wrote up the full method in how to analyze your chess mistakes.)
There are two ways to feed the free review — pick whichever is less effort for you:
Either way, the engine sweeps the game, the evaluation graph appears with the fatal move marked, and you get a one-line read on what happened there. No sign-up screen stands between you and the answer.
Here's the line, drawn straight: the review is free. Finding your turning point — pasted game or latest online loss — costs nothing, needs no account, and has no daily cap on pasted games. That's a genuine free tool, not a teaser.
The paid product is different in kind, not just degree: it's a live coach that watches you play and explains every move as you make it — flagging the mistake before you commit it, showing you the better moves, telling you why the position calls for what it calls for. The free review is the after-the-fact autopsy; the coach is the voice in your ear during the game. If you want to see what that's like, the on-ramp is a free assessment — you play, it maps your game, and you decide from there. The review itself stays free regardless.
Knowing where you lost is step one. Step two is turning it into practice. Once the review names your mistake, point yourself at the matching free resource:
Then review your next loss the same way. The point isn't one perfect analysis; it's the habit. Across ten or fifteen reviews one type of mistake will dominate, and that pattern is worth more to your rating than any single game ever could be.
Yes. The game review finds the turning point in any game you paste — or in your latest online loss — for free, with no sign-up and no daily cap on pasted games. It runs Stockfish in your browser, so there's nothing to install and nothing to pay. The paid product is the live coach that talks you through every move while you play; the review itself is free.
No account, no login, no API key. You can paste a PGN from any source. If you'd rather not dig the PGN out, type your chess.com or Lichess username and the tool pulls your most recent loss automatically — but that's a convenience, not a requirement. Pasting a PGN works exactly the same.
It's built for a different job. chess.com's Game Review grades every move and is gated behind limits on the free tier. BetterChess's review skips the wall of red and points at the one move where the evaluation actually flipped — the move that lost the game — and says why, in plain English, in about 30 seconds. Use chess.com for a full move-by-move pass; use this when you just want to know where it went wrong.
Lichess gives you unlimited engine analysis and an evaluation graph for free, which is excellent — but it leaves you to read the graph and draw your own conclusion. This tool reads the graph for you: it locates the single biggest swing, marks the fatal move, and explains it. Same free engine truth, less work to get to the answer.
No. A review tells you where one game went wrong; rating comes from noticing the same pattern across many games and drilling it. The review is a practice tool, not a promise — improvement depends on your own effort. What it does is make the first step (finding the mistake) fast enough that you'll actually do it.
Related: How to analyze your chess mistakes · Annotated game reviews · Chess openings explained · Chess glossary · Famous opening traps
BetterChess is a practice tool — we make no guarantee you'll reach 1800 or any rating. Improvement depends on your own practice and effort. Product names are trademarks of their respective owners.