The game of poker differs from Go and Chess in that poker players deal with incomplete information and therefore a successful strategy has to include randomness

The game of poker differs from Go and Chess in that poker players deal with incomplete information and therefore a successful strategy has to include randomness. If you are dealt AA under the gun, you can't just raise 100% of the time, you have to play a mixture of different moves, perhaps raise big 80% of the time, raise small 10% of the time and limp in 10% of the time (for example). With Go or Chess you can just play the best move in each particular situation and you will not lose. It's just a different kind of game