Chess tools

Free chess tools from Chesslume: rating maths, position analysis, and the small calculations that come up around a game.

• Next Move Calculator — Paste a FEN and get the strongest move from Stockfish 18, with the evaluation and the runner-up candidates.
• Board Editor — Set up any position by hand, get the FEN, and send it straight to the engine.
• Elo Calculator — See what a game is worth before you play it — the rating change for a win, a draw, and a loss.

For a full engine review of a real game, use the free game review instead — it imports your Chess.com or Lichess games and grades every move.