Put a position on the board and ask several chess engines what they think, side by side.
Free, no account, nothing to install. Engines run in your browser or on ours.
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- 1. e4
- c5
- 2. Nf3
- d6
- 3. d4
- cxd4
- 4. Nxd4
- Nf6
- 5. Nc3
- a6
- Stockfish 17.1 · cloud depth 24 · 5.0 s · best Be3 +0.34
- Caissa 1.26 depth 19 · 5.0 s · best Bg5 +0.51
- Stockfish 17.1 · browser depth 18 · 5.0 s · best Be2 +0.29
Guides
- Chess Engine 101 How engines think, which ones to use, and how to use them effectively. The essential starting point.
- Understanding Engine Evaluations What +1.5 actually means, when to trust engine scores, and when they mislead.
- Engine Settings That Actually Matter The four settings that matter (Hash, Threads, MultiPV, Contempt) and how to configure them.
- Analysing Your Games with an Engine The right way to review games: think first, engine second.