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I haven't finished digging through the paper and the supplement yet, but I'm curious about how many hands were multiway to the flop (and whether the percentages differ significantly between 1H/5AI and 5H/1AI). I'd guess that it's a pretty small fraction of the total hands, and I'm wondering what the performance is like in those particular cases.

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I don't have the exact percentages but I think it's less than 10%. It's not really possible to measure the bot's performance just in specific situations, but my feeling is the bot performs relatively well in these situations. Multi-way flops were basically impossible to do in a reasonable amount of time for past AI's. Our new search techniques make these situations feasible to figure out in seconds.

Cheers, thanks. One of the reasons I asked about 1H/5AI vs 5H/1AI is that historically the new bots for a given form of poker have played a bit wider than the accepted wisdom of the time, so I was curious if there were relatively more multiway pots with 5AI than with 5H.

The pros described the bot's preflop strategy as very sensible, so I think it's unlikely there were more multiway pots with 5 AI's.

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