Push or fold with 97o heads-up

Heads-up, as the small blind 97o shoves at every stack up to 10.5bb and folds deeper. As the big blind it calls at every stack up to 4.5bb, mixes at 5bb alone and folds deeper. Chips only, no ante, equal stacks.

  • 10.5bbShoves every time up to
  • 4.5bbCalls every time up to
  • 109Rank of 169
  • 12Combos

How deep can the small blind shove 97o?

97o shoves every time as the small blind up to 10.5bb. At 10.5bb its shove is worth -0.4971 big blinds against -0.5000 for folding. Past 10.5bb the chart folds it.

97o as the small blind, by stack
StackShove frequencyShove EVFold EVEquity when called
1bb100%-0.074-0.50046.3%
2bb100%-0.148-0.50046.3%
3bb100%-0.228-0.50044.5%
4bb100%-0.317-0.50040.3%
5bb100%-0.395-0.50037.6%
6bb100%-0.428-0.50036.6%
7bb100%-0.437-0.50036.3%
8bb100%-0.471-0.50036.1%
9bb100%-0.465-0.50035.9%
10bb100%-0.470-0.50035.7%
11bb0%-0.503-0.50035.4%
12bb0%-0.520-0.50035.4%
13bb0%-0.511-0.50035.6%
14bb0%-0.525-0.50035.5%
15bb0%-0.576-0.50035.4%
16bb0%-0.575-0.50035.0%
17bb0%-0.582-0.50034.7%
18bb0%-0.588-0.50034.8%
19bb0%-0.609-0.50034.4%
20bb0%-0.610-0.50034.4%

When should the big blind call with 97o?

97o calls every time as the big blind up to 4.5bb. At 4.5bb its call is worth -0.8788 big blinds against -1.0000 for folding. At 4.5bb a call breaks even at 38.9% equity, because the big blind has already posted a full blind that folding gives up. At 5bb it mixes, so either choice is close to break-even at that stack. At that stack the call is worth -1.0000 big blinds, level with the -1.0000 for folding. Past 5bb the chart folds it.

97o as the big blind, by stack
StackCall frequencyCall EVFold EVEquity vs shoves
1bb100%-0.074-1.00046.3%
2bb100%-0.249-1.00043.8%
3bb100%-0.546-1.00040.9%
4bb100%-0.784-1.00040.2%
5bb75%-1.000-1.00040.0%
6bb0%-1.233-1.00039.7%
7bb0%-1.449-1.00039.6%
8bb0%-1.795-1.00038.8%
9bb0%-1.995-1.00038.9%
10bb0%-2.185-1.00039.1%
11bb0%-2.545-1.00038.4%
12bb0%-2.815-1.00038.3%
13bb0%-3.123-1.00038.0%
14bb0%-3.457-1.00037.7%
15bb0%-3.945-1.00036.9%
16bb0%-4.248-1.00036.7%
17bb0%-4.551-1.00036.6%
18bb0%-4.819-1.00036.6%
19bb0%-5.197-1.00036.3%
20bb0%-5.511-1.00036.2%

What makes 97o different from similar hands?

97o is 12 combos out of the 1,326 two-card hands and ranks number 109 of the 169 starting-hand classes by equity against a random hand. From the small blind, 97o shoves every time only up to 10.5bb, while 97s shoves at every stack from 1 to 20bb. From the big blind, 97o calls cleanly 2bb shallower than 97s (4.5bb against 6.5bb). The offsuit version has three times as many combos but gives up the flush equity of its suited twin.

Where can I check other hands like 97o?

The stack pages show the full shove and call charts at each depth, and the hands closest to 97o in strength, along with 97s, have pages of their own. The combos page counts the specific hands that make up 97o and how card removal changes them.

How were the numbers for 97o computed?

The game has two players, blinds of 0.5 and 1, no ante and one effective stack. Every one of the 169 starting-hand classes is dealt in proportion to the card-compatible pairs of specific hands, and a showdown is settled with the exact equity from our preflop table. Each side keeps answering the other's average strategy until neither can gain, then the borderline hands are solved exactly.

Source: GeorgeLiPoker's own heads-up solver, run on its exact preflop equity table.

Questions

Is 97o a shove at 10bb heads-up?
Yes. At 10bb the small blind shoves 97o: shoving is worth -0.470 big blinds and folding -0.500.
Should the big blind call a shove with 97o at 15bb?
No. At 15bb calling with 97o is worth -3.945 big blinds against -1.000 for folding, so the chart folds.
Why does 97o change from a shove to a fold as stacks grow?
Deeper stacks put more chips at risk for the same blinds, and the big blind can afford to call a smaller share of hands. 97o shoves every time only up to 10.5bb.