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Kings vs ace-king: the odds

What are the odds of pocket kings against ace-king?

Hand Cards Wins Equity
Pocket kings K♥ K♦ 65.5% 65.9%
Ace-king suited A♠ K♠ 33.7% 34.1%
Split pot 0.82%

All-in before the flop, with five cards to come. Equity is each hand's average share of the pot — outright wins plus half of the split pots. Computed by enumerating all 1,712,304 possible boards with this site's own engine, so these are exact figures rather than a simulation.

Why the number looks like that

A dominated coin flip: ace-king holds one of the cards it needs to pair, which cripples it. Only an ace really saves the hand, and there are only three left.

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