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Flip board
Move order hint
Enforce legal turn order
Free plan notice
Your saved trees are safe. After reload, Free shows up to 4 plies. Upgrade to Basic for full depth, suggestions, and eval heatmap.
Tree
SavedChange test for tree color (ie: "Test me!" color)
Test Me!
Stop Test
Save
Undo
Undo
Revert the last change to this tree.
Shortcut: Ctrl/Cmd + Z
Redo
Redo
Re-apply the last undone change.
Shortcut: Ctrl/Cmd + Shift + Z
Heatmap
Heatmap mode
Color nodes by Stockfish eval. Red = worse, green = better.
Shows a quick delete button for fast pruning.
Practice Stats
Due lines, misses, and focused retest controls
Tested lines
0
Need retest
0
Today success
--
Recent misses
0
Smart BuildElo-aware practical opening tree
⚠️ Rating system note
This tool uses Lichess ratings, which tend to run 100–300 points higher than Chess.com ratings. If you play on Chess.com, your actual Lichess-equivalent rating may be higher than shown. Adjust your ELO range accordingly.
ℹ️ Username not linked
Your Lichess rating could not be loaded.
Link your Lichess username in Account to auto-fill your ELO.Starting Position
Your ELO Range
Lichess rating
Tree Output
Advanced options
Prune my moves to best lines only
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