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♞ Claude Chess
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Difficulty
Easy
~600 ELO · blunders often
Medium
~1100 ELO · occasional mistakes
Hard
~1600 ELO · few mistakes
Impossible
strongest · 2000+ style*
*Rough educational estimates, not a true rated engine.
Time control
Untimed
5 + 0
Blitz
10 + 0
Rapid
15 + 10
Rapid +inc
Custom
Minutes
Increment (sec)
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Random
White ♔
Black ♚
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White to move