Play the computer

Four levels. Computer games are unrated and untimed unless you add a clock.

You play

White Black Random

Clock

None 5 min 10 min 15 | 10

Pieces

Full set, 16 a side Classic, 10 a side All 16, 8 pawns (sharp)

The engine searches the real 4D move tree with alpha-beta pruning; the Queen level looks four plies ahead and can take a few seconds per move in busy positions.

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