Sparring partners
Built-in opponents
A hand-tuned roster from beginner to master. Pick a tier and challenge any of them with your own bots.
Beginner
Under 1000
Wretched Wilma
650Hangs queens, blames the board, refuses to resign. A grim student of suffering.

Apologetic Anders
900Trades down, retreats often, defends everything. Sorry about that move. And that one.

Funny Frank
800Marches pawns, promotes early, occasionally wins by sheer surprise.

Greg
600Coffee-shop beginner. Looks one ply ahead. Will hang queens.
Intermediate
1000 – 1599
Sir Reginald
1100Castles like a gentleman, develops every piece, refuses to leave anything en prise.

Mean Mei
1250Trades down only when ahead, hunts hanging pieces, loves a good fork.

The Oracle
1500Doesn't hang pieces, controls the center, finishes when the moment comes.

Marcy
1000Casual club beginner. Plays the obvious move.

Theo
1400Reasonable amateur. Sound openings, solid middlegame.
Advanced
1600 – 2099
Petra
1800Strong club player. Punishes tactical mistakes.
Master
2100 +
Dr. Linwood
2200Solid expert. Patient, positional, deadly in the endgame.

The Tinkerer
2600Engine unleashed. Skill 20, depth 14, 2s ceiling. You will lose.