I understand that for a tournament you need a blind structure. I found example in PokerSoup.com. Here are the inputs they have used. No of players = 20. Tournament length 4 hours. Smallest chip denomination 25. Starting chips 5000. Round length 20. I though there would be 12 rounds as tournament length/round length, i.e. 4*60/20 = 12. But as per example there are 20 rounds. I am also assuming there is no time lost between rounds. Here is the link for the example: https://pokersoup.com/tool/blindStructureCalculator

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    Is your question that you want to understand how blind structures work in general? Or are you confused by the number of rounds?
    – Grinch91
    Nov 3, 2021 at 14:05
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    @Grinch91, I am confused by number of rounds. From the answer provided by BowlOfRed, it got clear that few more rounds are thrown in for just in case. Nov 4, 2021 at 3:48
  • Look at this question which is about blind periods. poker.stackexchange.com/questions/11592/…
    – Jon
    Nov 5, 2021 at 5:06

1 Answer 1


Tournaments will have a targeted time, but may generate a winner before or after that point based on how the participants play. You're not going to guarantee a stopping point to the minute.

I suspect that the blind structure that site creates has a "target" round when a winner is predicted, but includes a few more rounds just in case. All the on-the-fly and common structures it lists seem to include exactly three rounds after the target time (whether that's 3 more hours or 15 more minutes).

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