Stockfish 18 · in the browser
Chess calculators
Free tools that put the answer in the largest type on the page. The first one finds the next best move with Stockfish 18 in this tab.
Paste a FEN or set the position on the board. The position never leaves the page.
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Starting position. Open the calculator to see the best move.
Paste a FEN
FEN or a position on the board. Illegal input is named, not silently rewritten into a different position.
Read the move
The first move is the answer. Depth, nodes, and time stay visible but quieter than the eval.
Privacy
Stockfish runs in this tab. See Privacy.