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Flawless Poker

Universal Law 19

GALACTIC GAUNTLET

Tournament survival

A tournament is often a string of all-ins. Each one can be fair and the string can still be rare.

If each all-in is an independent event, the chance of winning several in a row is the single-all-in chance raised to the number of all-ins. A true coin flip five times is 1 in 32. The 53% column is the neighborhood of deuces against ace-king offsuit. The 57% column is a slightly better edge. Both of those edges are examples. The powers are exact for the percentages shown.

Chance of winning every all-in in the row. The 53% and 57% columns are example edges.
All-ins in a rowTrue 50/50 flipsAt 53%At 57%
150.0%, 1 in 2.053.0%57.0%
225.0%, 1 in 4.028.1%32.5%
312.5%, 1 in 8.014.9%18.5%
53.1%, 1 in 324.2%6.0%
70.8%, 1 in 1281.2%2.0%
100.1%, 1 in 1,0240.2%0.4%

Aces against callers, wins and equity.

Equity counts split pots at half. An outright win does not. Each row is a simulation of 100,000 deals against that many random calling hands.

Pocket aces all in before the flop. 100,000 deals for each number of callers.
CallersAces win outrightAces' equity, splits included
185.0%85.3%
273.1%73.3%
363.8%64.0%
455.4%55.7%
548.8%49.1%
643.4%43.7%
738.1%38.4%
834.6%34.8%
930.9%31.1%

One bubble.

Four players remain and three are paid, 50%, 30%, and 20%. The stacks are an example: 4,000, 3,000, 2,000, and 1,000. The 4,000 stack shoves. The 3,000 stack has to call off the rest of its chips. In chips, that call wants 50% equity. Under the Malmuth-Harville model, folding keeps 29.5% of the prize pool and winning the all-in brings 40.5%, so the call wants 72.9% equity. The model ignores the blinds still to be posted. Near the money, staying alive is worth more than the chips in the middle.

These counts are for study and post-session review. Where a row comes from a simulation, the caption names how many deals were run. Where a stack or a pot is made up, the caption says so. None of these figures is an instruction for a live pot.