White to play
0 / 0
Paste PGN
What should it calculate?
Which lines?
It works through them one at a time, at the engine power you choose next. When it reaches a position with more than one good move it saves the question and moves on instead of waiting — you answer them all together afterwards.
It takes that many from the top of the trail — the ones with the most
games behind them.
Choose an opening
Popular
Engine power
Your extra settings are remembered, so this starts the build.
Extra settings
Whichever of depth and time comes first ends that position.
Remembered settings skip this step next time. You can still change them in Settings.
Add this variation to your repertoire?
Delete it?
Starting up
—
Queue
Questions
Nothing waiting.
Click the move you want to play, on the board.
Log
What your database says
Looking…
| Move | Lines | Due |
|---|
What the databases say
Looking…
| Move | Games | Share | By database |
|---|
Trail
Lines it walked past. Pick one to build next.
A reply with fewer games than this never reaches the
trail. 0 keeps them all.
Options
Engine
Stockfish calculates on your computer, in this page, not on our server. Choose below how much of your computer it may use. Keep this tab open while a build runs.