CHESS ANALYSIS BOARD

Free Chess Analysis Board with Stockfish Engine

Run online chess analysis on any position: paste FEN or step through a full game with eval bar, move grades from Brilliant to Blunder, and live engine lines. Free, unlimited, no signup. Need a full game report? Try PGN chess analysis or start on the free chess analysis tool homepage.

Chess.comLichessPGN

Review

Try the instant demo — step through the moves, or import your own game.

Step through the game

⏮←move 7/18→⏭▶

tip: use ← → keys • eval 59cp • accuracy 89%

♞ Coach • move 4. Ba4

✓ Good

Playable, but imprecise.

Nothing serious yet, but small slips add up. In the opening, ask: does my move improve my worst piece?

BIGGEST LESSONS — TAP TO REPLAY

6… b5−3.1 pawns →4… Nf6−2.2 pawns →9… Nb8−0.9 pawns →

Move grades — White vs Black

♙ 91% · ♟ 86%

Grade	♙ You	♟ Opponent
✦Brilliant	0	0
★Best	1	1
!Excellent	2	2
✓Good	4	3
?!Inaccuracy	2	1
?Mistake	0	1
??Blunder	0	1

Report • accuracy 89%

🔊1 blunders1 mistakes

BOARD DESIGN

ClassicTournamentSlateMidnight

♟ Black — Opponent to move

44%

56%

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

win probability — White 56% · Black 44% (White is slightly better)

♙ White — You

1. e4★ Best1… e5✓ Good2. Nf3?! Inaccuracy2… Nc6! Excellent3. Bb5✓ Good3… a6★ Best4. Ba4✓ Good4… Nf6? Mistake5. O-O! Excellent5… Be7✓ Good6. Re1! Excellent6… b5?? Blunder7. Bb3?! Inaccuracy7… d6✓ Good8. c3✓ Good8… O-O! Excellent9. h3✓ Good9… Nb8?! Inaccuracy

How the coach works: every blunder ships with a one-line idea plus forcing candidate moves. Live Stockfish analysis plugs into this same UI — no redesign needed.