KQs vs A2s

When KQs and A2s get all in before the flop, KQs wins 42.9% of the time and A2s takes 57.1%. Broken down, KQs wins outright 42.6%, chops 0.6% and loses 56.8% — a margin of -14.3 points. Two unpaired hands with no shared rank — the higher cards usually run 60–65%.

The same matchup shifts depending on how the suits overlap. With one shared suit the number is 40.7% (for example Ks Qs against As 2s); with no shared suit it is 43.6% (Ks Qs against Ah 2h). That is a spread of 2.93 points across the 16 distinct card combinations, and it comes almost entirely from whether the two hands are fighting over the same flush.

Add a third player holding a random hand and the split becomes KQs 37.4%, A2s 38.3%, random 24.4%. KQs gives up 5.5 points and A2s gives up 18.9, so the underdog loses more than the favourite does. Extra players always eat into the leader's share faster than into anyone else's.

Taken on their own, KQs is worth 63.4% against a random hand (rank 16 of 169) and A2s is worth 57.6% (rank 43). The gap between them in the ranking is only 5.8 points, yet head to head the gap is 14.3 points — a reminder that a ranking table and a direct matchup are two different questions.

Framed as a run of one hundred identical all-ins, KQs scoops roughly 43 pots, splits about one, and loses the remaining 57. Against eight random opponents rather than this one specific hand, KQs would be down to 20.4% and A2s to 14.6%, so the shape of this particular confrontation matters far more than either hand's standing in the overall ranking.

From A2s's side, 57.1% is the break-even point for calling an all-in at 0.75:1 pot odds. Put another way, the call is profitable as long as the amount you have to put in is less than 57.1% of the pot you are playing for. KQs holds the other 42.9% of that same pot.

Two caveats keep this figure honest. First, it is showdown equity across all 16 card combinations with five board cards still to come — there is no fold equity in it, so the value of shoving in practice is usually higher than the raw percentage suggests. Second, it assumes A2s really does hold exactly A2s; against the wider range a player would actually get all in with, KQs's 42.9% moves. Use the individual pages for KQs and A2s to see how each of them fares against all 168 other holdings before treating this single pairing as the whole picture.

When the three flop cards are out, KQs is ahead 30.4% of the time and A2s 69.6%, and the two hands are never level on the flop. "Ahead" means the better best-five-card hand from the cards showing plus the two hole cards; draws are not counted.

When KQs leads on the flop, A2s comes back on the turn and river 18.1% of the time. When A2s leads on the flop, KQs turns it around 25.4% of the time. The hand in front holds on to win 76.2% of the time from the flop and 86.2% from the turn (level spots left out).

With the turn out, KQs leads 37.4% and A2s 62.6%. Counted exhaustively, KQs finishes with 42.77% equity (the 42.9% at the top of the page is a 200,000-hand simulation).