He was SEA low GM. Maybe he wasn't very good but he certainly wasn't a guy who would lie so he wouldn't have to pay. He paid me for multiple hours. I'm sure he didn't lie about himself beating Chobo.
Kayhan beat Chobo while he was coaching, so it really isn't that black and white.
Short answer, yes he beat him.
Long answer, not in the way Chobo would be playing normally.
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