Unlock Magnus

Practise against Magnus

Magnus runs Stockfish 19 with its own strength limit set to 2900 (UCI_Elo), at search depth 15. At this level one inaccuracy is often enough to lose, so treat a draw as a good result and study how the engine converts its advantages.

After each game, set up the position where it turned in the best move calculator and see what Stockfish would have played. Pro members can also run the whole game through the chess analysis board for a move-by-move review. If Magnus feels too easy, move up to Demon (3190); if it is too strong, drop to Titan (2600).

All 11 levels are on the play chess against the computer page, and the bots up to 2600 are free. How each one is tuned is explained in our guide to chess bots.