Is there an online analysis engine that allows you to enter a PGN and get a game analysis, showing where suboptimal moves were made?

I know there are programs for download/purchase that do this, but I specifically want an online one. The ones I've found (e.g.) can analyze positions, but not entire games.

  • If you do this, the amount of CPU attention devoted to your position will be variable, and perhaps not enough to find a high quality solution.
    – Tony Ennis
    Commented Jan 4, 2014 at 14:34
  • I want this apps please because of its triks
    – user2734
    Commented Mar 23, 2014 at 11:52

7 Answers 7


lichess.org has played game analysis and allows you to edit a board before AI game.

Its analysis shows wrong and right moves and percentage statistics of mistakes for both sides.

  • But it doesn't seem possible to enter an existing game for analysis, only ones you've actually played on that site. Or am I missing something?
    – TKR
    Commented Dec 29, 2013 at 23:52
  • If PGN contains moves, you can copy it. If it's not, I can just sorry. Happy New Year)
    – neochar
    Commented Jan 1, 2014 at 8:50

You can import your game on http://lichess.org/paste, then analyse it.


http://analyse.deep-chess.de/ allows you to analyze your game online with different chess engines.

  • there is no way to enter PGN there, right? FEN is more than unclear...
    – vak
    Commented Jun 9, 2014 at 8:20
  • btw, you can use some online PGN to FEN converter. Commented Apr 23, 2015 at 6:54
  • 3
    As of today, this site is dead.
    – Unihedron
    Commented Jun 19, 2015 at 7:20

http://analysis.cpuchess.com/ analyses your game with an option of a variety of engines like houdini and stockfish


I recently found that chess.com also has a free option to analyze an entire game (by pasting a PGN), although paid accounts can analyze in more detail.

https://www.chess.com/analysis-board-editor (right panel, second tab)

The analysis process will intercalate comments idicating better moves if necessary. In the end, you will see a summary like this:

Strength        White   Black
Excellent          41   38
Good               13   13
Inaccuracy (?!)     1    5
Mistake (?)         2    0
Blunder (??)        0    0
Forced              0    0
Best Move       66.7%    50.9%
Avg. Diff        0.14    0.19

Here You can ask even very deep analysis, possibly also for whole games.



You may want to download this free Creatica chess game analyzer for Windows for your pgn games http://chessgame-analyzer.creatica.org/ Just right click on your pgn file and choose "Analyze with Stockfish". The result will be opened in your default pgn GUI; for example, in SCID vs PC or Chessbase.

  • Welcome to Chess Stack Exchange. You must state explicitly in your post that this is your own product: see How not to be a spammer.
    – Glorfindel
    Commented May 16, 2017 at 6:54
  • 1
    Oh, and another thing: the question asks for an online solution, which this answer doesn't provide.
    – Glorfindel
    Commented May 16, 2017 at 7:42

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