Try every idea. Keep every line.
A free board for playing out any position, with a live Stockfish that follows every move and shows you its top three lines.
No account needed: try it now.
What you get
Variations, nested
Go back and play something else: it becomes a variation under the move it replaces. Promote or delete lines with a right-click.
Live engine
Top three lines, the best move as a blue arrow and the eval bar. Click a move in a line to play up to it.
PGN and FEN
Load a PGN with variations, comments and annotations, or a FEN. Copy either back out.
Opening names
From Lichess’s openings list, plus a red glow on a king in check and the result when the game ends.
Straight from a review
Open any reviewed game on the board at the move you’re looking at.
Picks up where you left off
Your analysis is kept in the browser, so it’s still there after a reload.
How it works
- Open the boardPaste a PGN or FEN, or just start moving.
- ExploreEvery side line is kept in the move tree.
- Check with StockfishIts lines update as you move.
Get better from every game.
Make a free account in under a minute and add your usernames. Your next game gets checked as soon as it ends.