Solver answer
Should the big blind probe the turn after a check-back?
6-max cash, 100 big blinds · Button opens, big blind calls · Turn 7♥ 5♣ 3♦ 2♠ · Big blind to act
Updated
The solver's answer
The big blind's whole range
Bet 66% Check 34%
⅓ pot · 1.8 bb
The big blind bets most of its range, always for a third of the pot, the one probe size this solution offers.
7♥5♣3♦2♠
- Pot
- 5.5 bb
- Behind
- 97.5 bb
- First to act
- You
In a 6-max cash game at 100 big blinds, after the button opens to 2.5 bb, the big blind calls and the 7♥ 5♣ 3♦ flop is checked through, the big blind bets the 2♠ turn for 1.8 bb into 5.5 bb with 66% of its range and checks 34%, according to a solver answer published free by Poker Skill.
Why the big blind probes most of its range
- A probe bet is a turn bet from the big blind after the preflop raiser checks back the flop. A check-back leaves out many of the hands that would have bet, so the button's range tends to be weaker. Here the button checked back 50% of its range.
- Made hands of every strength bet: second pair 87% of the time, third pair 88%, top pair 76% and sets 77%.
- Straight draws bet too: open-enders 83% and gutshots 78%.
- King-high is the exception. It checks 78% of the time, and king-queen offsuit 99%: king-high has more showdown value than weaker unpaired hands, a reason to check it rather than bluff.
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The full strategy, hand by hand
| A | K | Q | J | T | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | AA Not in this range here | AKs Not in this range here | AQs Not in this range here | AJs B 83 % | ATs B 83 % | A9s B 69 % | A8s B 67 % | A7s B 92 % | A6s X 99 % | A5s B 73 % | A4s B 66 % | A3s X 53 % | A2s B 92 % |
| K | AKo Not in this range here | KK Not in this range here | KQs X 99 % | KJs X 100 % | KTs X 99 % | K9s X 58 % | K8s B 99 % | K7s B 62 % | K6s B 99 % | K5s B 100 % | K4s X 100 % | K3s B 99 % | K2s B 99 % |
| Q | AQo B 72 % | KQo X 99 % | QQ Not in this range here | QJs X 51 % | QTs B 55 % | Q9s B 55 % | Q8s B 98 % | Q7s B 62 % | Q6s B 100 % | Q5s B 98 % | Q4s B 80 % | Q3s B 99 % | Q2s B 99 % |
| J | AJo B 83 % | KJo X 100 % | QJo B 51 % | JJ Not in this range here | JTs B 56 % | J9s B 76 % | J8s B 97 % | J7s B 67 % | J6s B 100 % | J5s B 80 % | J4s B 54 % | J3s Not in this range here | J2s Not in this range here |
| T | ATo B 84 % | KTo X 99 % | QTo B 65 % | JTo B 58 % | TT Not in this range here | T9s X 53 % | T8s B 95 % | T7s B 64 % | T6s B 100 % | T5s Not in this range here | T4s Not in this range here | T3s Not in this range here | T2s Not in this range here |
| 9 | A9o B 71 % | K9o X 56 % | Q9o B 66 % | J9o B 79 % | T9o X 53 % | 99 B 85 % | 98s B 100 % | 97s B 63 % | 96s B 96 % | 95s Not in this range here | 94s Not in this range here | 93s Not in this range here | 92s Not in this range here |
| 8 | A8o B 68 % | K8o Not in this range here | Q8o Not in this range here | J8o Not in this range here | T8o Not in this range here | 98o Not in this range here | 88 B 69 % | 87s B 99 % | 86s B 73 % | 85s B 100 % | 84s Not in this range here | 83s Not in this range here | 82s Not in this range here |
| 7 | A7o B 91 % | K7o Not in this range here | Q7o Not in this range here | J7o Not in this range here | T7o Not in this range here | 97o Not in this range here | 87o Not in this range here | 77 B 91 % | 76s B 96 % | 75s B 71 % | 74s B 56 % | 73s Not in this range here | 72s Not in this range here |
| 6 | A6o Not in this range here | K6o Not in this range here | Q6o Not in this range here | J6o Not in this range here | T6o Not in this range here | 96o Not in this range here | 86o Not in this range here | 76o Not in this range here | 66 B 99 % | 65s B 57 % | 64s B 81 % | 63s B 99 % | 62s Not in this range here |
| 5 | A5o B 73 % | K5o Not in this range here | Q5o Not in this range here | J5o Not in this range here | T5o Not in this range here | 95o Not in this range here | 85o Not in this range here | 75o Not in this range here | 65o Not in this range here | 55 B 74 % | 54s B 97 % | 53s B 54 % | 52s X 79 % |
| 4 | A4o B 66 % | K4o Not in this range here | Q4o Not in this range here | J4o Not in this range here | T4o Not in this range here | 94o Not in this range here | 84o Not in this range here | 74o Not in this range here | 64o Not in this range here | 54o Not in this range here | 44 B 97 % | 43s B 99 % | 42s Not in this range here |
| 3 | A3o Not in this range here | K3o Not in this range here | Q3o Not in this range here | J3o Not in this range here | T3o Not in this range here | 93o Not in this range here | 83o Not in this range here | 73o Not in this range here | 63o Not in this range here | 53o Not in this range here | 43o Not in this range here | 33 B 76 % | 32s Not in this range here |
| 2 | A2o Not in this range here | K2o Not in this range here | Q2o Not in this range here | J2o Not in this range here | T2o Not in this range here | 92o Not in this range here | 82o Not in this range here | 72o Not in this range here | 62o Not in this range here | 52o Not in this range here | 42o Not in this range here | 32o Not in this range here | 22 B 70 % |
- Check: 34.14% of the range (85.32 combos)
- Bet ⅓ pot (1.8 bb): 65.86% of the range (164.6 combos)
Each cell is a hand class. Its letter is the action the class takes most (F fold, X check, C call, B bet, R raise) and its number is how often, in percent. In the labels, s means suited and o means offsuit.
| Hand class | Combos | Check | Bet ⅓ pot (1.8 bb) |
|---|---|---|---|
| AJs | 3.967 | 17.2% | 82.8% |
| ATs | 3.864 | 16.7% | 83.3% |
| A9s | 3.405 | 31.0% | 69.0% |
| A8s | 3.446 | 32.6% | 67.4% |
| A7s | 1.15 | 8.5% | 91.5% |
| A6s | 2.385 | 98.6% | 1.4% |
| A5s | 2.591 | 27.0% | 73.0% |
| A4s | 2.558 | 33.9% | 66.1% |
| A3s | 2.999 | 53.4% | 46.6% |
| A2s | 2.984 | 8.0% | 92.0% |
| KQs | 0.001 | 98.9% | 1.1% |
| KJs | 3.391 | 99.8% | 0.2% |
| KTs | 3.577 | 98.8% | 1.2% |
| K9s | 3.136 | 58.1% | 41.9% |
| K8s | 2.105 | 1.1% | 98.9% |
| K7s | 2.607 | 38.3% | 61.7% |
| K6s | 2.544 | 0.9% | 99.1% |
| K5s | 2.453 | 0.5% | 99.5% |
| K4s | 1.624 | 99.6% | 0.4% |
| K3s | 1.711 | 0.6% | 99.4% |
| K2s | 0.005 | 0.6% | 99.4% |
| AQo | 3.622 | 28.3% | 71.7% |
| KQo | 11.709 | 99.0% | 1.0% |
| QJs | 2.739 | 50.9% | 49.1% |
| QTs | 2.707 | 44.7% | 55.3% |
| Q9s | 1.842 | 44.6% | 55.4% |
| Q8s | 1.121 | 2.2% | 97.8% |
| Q7s | 2.272 | 38.0% | 62.0% |
| Q6s | 1.666 | 0.2% | 99.8% |
| Q5s | 0.485 | 1.8% | 98.2% |
| Q4s | 2.021 | 20.5% | 79.5% |
| Q3s | 1.442 | 1.0% | 99.0% |
| Q2s | 0.109 | 1.0% | 99.0% |
| AJo | 11.96 | 16.6% | 83.4% |
| KJo | 3.682 | 99.8% | 0.2% |
| QJo | 5.756 | 48.9% | 51.1% |
| JTs | 1.842 | 44.1% | 55.9% |
| J9s | 2.088 | 23.9% | 76.1% |
| J8s | 1.766 | 2.9% | 97.1% |
| J7s | 2.451 | 32.8% | 67.2% |
| J6s | 1.051 | 0.3% | 99.7% |
| J5s | 1.285 | 20.4% | 79.6% |
| J4s | 0.233 | 46.2% | 53.8% |
| ATo | 10.888 | 16.1% | 83.9% |
| KTo | 4.235 | 98.8% | 1.2% |
| QTo | 5.24 | 34.9% | 65.1% |
| JTo | 6.188 | 42.3% | 57.7% |
| T9s | 1.99 | 53.2% | 46.8% |
| T8s | 2.876 | 5.1% | 94.9% |
| T7s | 2.998 | 36.2% | 63.8% |
| T6s | 0.696 | 0.3% | 99.7% |
| A9o | 11.552 | 29.0% | 71.0% |
| K9o | 8.484 | 56.2% | 43.8% |
| Q9o | 3.617 | 33.7% | 66.3% |
| J9o | 0.96 | 21.5% | 78.5% |
| T9o | 3.568 | 52.9% | 47.1% |
| 99 | 4.172 | 15.5% | 84.5% |
| 98s | 1.982 | 0.2% | 99.8% |
| 97s | 2.999 | 36.6% | 63.4% |
| 96s | 2.042 | 4.2% | 95.8% |
| A8o | 6.393 | 32.2% | 67.8% |
| 88 | 4.648 | 30.7% | 69.3% |
| 87s | 2.982 | 1.3% | 98.7% |
| 86s | 2.643 | 27.2% | 72.8% |
| 85s | 2.995 | 0.5% | 99.5% |
| A7o | 4.237 | 8.8% | 91.2% |
| 77 | 1.728 | 8.9% | 91.1% |
| 76s | 1.563 | 3.6% | 96.4% |
| 75s | 1.347 | 29.1% | 70.9% |
| 74s | 0.575 | 43.6% | 56.4% |
| 66 | 5.227 | 1.1% | 98.9% |
| 65s | 2.94 | 43.0% | 57.0% |
| 64s | 1.794 | 19.1% | 80.9% |
| 63s | 0.039 | 1.5% | 98.5% |
| A5o | 2.461 | 27.0% | 73.0% |
| 55 | 0.679 | 26.0% | 74.0% |
| 54s | 2.547 | 2.9% | 97.1% |
| 53s | 1.372 | 45.6% | 54.4% |
| 52s | 0.195 | 78.9% | 21.1% |
| A4o | 0.078 | 34.5% | 65.5% |
| 44 | 5.657 | 3.0% | 97.0% |
| 43s | 2.951 | 1.0% | 99.0% |
| 33 | 1.124 | 24.3% | 75.7% |
| 22 | 2.905 | 29.7% | 70.3% |
Ranges, pot and stacks
- The hand so far: 6-max cash, 100 big blinds · Button opens to 2.5 bb, big blind calls · Flop 7♥ 5♣ 3♦: big blind checks, button checks · Turn 2♠ · Pot 5.5 bb · Big blind to act, 97.5 bb behind
- Pot at this decision, including the bets in front: 5.5 bb
- The big blind: 97.5 bb behind
- The button: 97.5 bb behind
| A | K | Q | J | T | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | AA Not in this range here | AKs Not in this range here | AQs Not in this range here | AJs 99 % | ATs 97 % | A9s 85 % | A8s 86 % | A7s 38 % | A6s 60 % | A5s 86 % | A4s 64 % | A3s 100 % | A2s 100 % |
| K | AKo Not in this range here | KK Not in this range here | KQs <1 % | KJs 85 % | KTs 89 % | K9s 78 % | K8s 53 % | K7s 87 % | K6s 64 % | K5s 82 % | K4s 41 % | K3s 57 % | K2s <1 % |
| Q | AQo 30 % | KQo 98 % | QQ Not in this range here | QJs 69 % | QTs 68 % | Q9s 46 % | Q8s 28 % | Q7s 76 % | Q6s 42 % | Q5s 16 % | Q4s 51 % | Q3s 48 % | Q2s 4 % |
| J | AJo 100 % | KJo 31 % | QJo 48 % | JJ Not in this range here | JTs 46 % | J9s 52 % | J8s 44 % | J7s 82 % | J6s 26 % | J5s 43 % | J4s 6 % | J3s Not in this range here | J2s Not in this range here |
| T | ATo 91 % | KTo 35 % | QTo 44 % | JTo 52 % | TT Not in this range here | T9s 50 % | T8s 72 % | T7s 100 % | T6s 17 % | T5s Not in this range here | T4s Not in this range here | T3s Not in this range here | T2s Not in this range here |
| 9 | A9o 96 % | K9o 71 % | Q9o 30 % | J9o 8 % | T9o 30 % | 99 70 % | 98s 50 % | 97s 100 % | 96s 51 % | 95s Not in this range here | 94s Not in this range here | 93s Not in this range here | 92s Not in this range here |
| 8 | A8o 53 % | K8o Not in this range here | Q8o Not in this range here | J8o Not in this range here | T8o Not in this range here | 98o Not in this range here | 88 78 % | 87s 99 % | 86s 66 % | 85s 100 % | 84s Not in this range here | 83s Not in this range here | 82s Not in this range here |
| 7 | A7o 47 % | K7o Not in this range here | Q7o Not in this range here | J7o Not in this range here | T7o Not in this range here | 97o Not in this range here | 87o Not in this range here | 77 58 % | 76s 52 % | 75s 67 % | 74s 19 % | 73s Not in this range here | 72s Not in this range here |
| 6 | A6o Not in this range here | K6o Not in this range here | Q6o Not in this range here | J6o Not in this range here | T6o Not in this range here | 96o Not in this range here | 86o Not in this range here | 76o Not in this range here | 66 87 % | 65s 98 % | 64s 45 % | 63s 1 % | 62s Not in this range here |
| 5 | A5o 27 % | K5o Not in this range here | Q5o Not in this range here | J5o Not in this range here | T5o Not in this range here | 95o Not in this range here | 85o Not in this range here | 75o Not in this range here | 65o Not in this range here | 55 23 % | 54s 85 % | 53s 69 % | 52s 10 % |
| 4 | A4o 1 % | K4o Not in this range here | Q4o Not in this range here | J4o Not in this range here | T4o Not in this range here | 94o Not in this range here | 84o Not in this range here | 74o Not in this range here | 64o Not in this range here | 54o Not in this range here | 44 94 % | 43s 98 % | 42s Not in this range here |
| 3 | A3o Not in this range here | K3o Not in this range here | Q3o Not in this range here | J3o Not in this range here | T3o Not in this range here | 93o Not in this range here | 83o Not in this range here | 73o Not in this range here | 63o Not in this range here | 53o Not in this range here | 43o Not in this range here | 33 38 % | 32s Not in this range here |
| 2 | A2o Not in this range here | K2o Not in this range here | Q2o Not in this range here | J2o Not in this range here | T2o Not in this range here | 92o Not in this range here | 82o Not in this range here | 72o Not in this range here | 62o Not in this range here | 52o Not in this range here | 42o Not in this range here | 32o Not in this range here | 22 97 % |
Each cell shows the share of the class's possible combos in the range.
| A | K | Q | J | T | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | AA 48 % | AKs 34 % | AQs 48 % | AJs 58 % | ATs 92 % | A9s 79 % | A8s 79 % | A7s 5 % | A6s 24 % | A5s 11 % | A4s 38 % | A3s 22 % | A2s 100 % |
| K | AKo 22 % | KK 39 % | KQs 91 % | KJs 94 % | KTs 86 % | K9s 53 % | K8s 62 % | K7s 14 % | K6s 7 % | K5s 24 % | K4s 39 % | K3s 38 % | K2s 70 % |
| Q | AQo 37 % | KQo 78 % | QQ 32 % | QJs 58 % | QTs 37 % | Q9s 25 % | Q8s 50 % | Q7s 29 % | Q6s 12 % | Q5s 48 % | Q4s 55 % | Q3s 29 % | Q2s <1 % |
| J | AJo 56 % | KJo 82 % | QJo 59 % | JJ 39 % | JTs 43 % | J9s 54 % | J8s 47 % | J7s 32 % | J6s 32 % | J5s 71 % | J4s Not in this range here | J3s Not in this range here | J2s Not in this range here |
| T | ATo 68 % | KTo 81 % | QTo 67 % | JTo 41 % | TT 26 % | T9s 44 % | T8s 70 % | T7s 69 % | T6s 14 % | T5s Not in this range here | T4s Not in this range here | T3s Not in this range here | T2s Not in this range here |
| 9 | A9o 74 % | K9o 53 % | Q9o 63 % | J9o 52 % | T9o 44 % | 99 21 % | 98s 32 % | 97s 90 % | 96s Not in this range here | 95s Not in this range here | 94s Not in this range here | 93s Not in this range here | 92s Not in this range here |
| 8 | A8o 50 % | K8o 19 % | Q8o Not in this range here | J8o Not in this range here | T8o 2 % | 98o Not in this range here | 88 19 % | 87s 36 % | 86s 33 % | 85s Not in this range here | 84s Not in this range here | 83s Not in this range here | 82s Not in this range here |
| 7 | A7o 37 % | K7o 19 % | Q7o Not in this range here | J7o Not in this range here | T7o Not in this range here | 97o Not in this range here | 87o Not in this range here | 77 20 % | 76s 2 % | 75s Not in this range here | 74s Not in this range here | 73s Not in this range here | 72s Not in this range here |
| 6 | A6o 79 % | K6o Not in this range here | Q6o Not in this range here | J6o Not in this range here | T6o Not in this range here | 96o Not in this range here | 86o Not in this range here | 76o Not in this range here | 66 26 % | 65s 50 % | 64s Not in this range here | 63s Not in this range here | 62s Not in this range here |
| 5 | A5o 56 % | K5o Not in this range here | Q5o Not in this range here | J5o Not in this range here | T5o Not in this range here | 95o Not in this range here | 85o Not in this range here | 75o Not in this range here | 65o Not in this range here | 55 5 % | 54s 10 % | 53s Not in this range here | 52s Not in this range here |
| 4 | A4o 34 % | K4o Not in this range here | Q4o Not in this range here | J4o Not in this range here | T4o Not in this range here | 94o Not in this range here | 84o Not in this range here | 74o Not in this range here | 64o Not in this range here | 54o Not in this range here | 44 54 % | 43s Not in this range here | 42s Not in this range here |
| 3 | A3o 53 % | K3o Not in this range here | Q3o Not in this range here | J3o Not in this range here | T3o Not in this range here | 93o Not in this range here | 83o Not in this range here | 73o Not in this range here | 63o Not in this range here | 53o Not in this range here | 43o Not in this range here | 33 4 % | 32s Not in this range here |
| 2 | A2o 6 % | K2o Not in this range here | Q2o Not in this range here | J2o Not in this range here | T2o Not in this range here | 92o Not in this range here | 82o Not in this range here | 72o Not in this range here | 62o Not in this range here | 52o Not in this range here | 42o Not in this range here | 32o Not in this range here | 22 29 % |
Each cell shows the share of the class's possible combos in the range.
Where the numbers come from
The numbers come from a commercial solver's precomputed solution for a 6-max cash game at 100 big blinds, with a 5% rake capped at 15 bb and 2.5 bb opens. It allows one bet size at each decision. Here the big blind's probe is a third of the pot. Two players see the flop. Pots with three or more players aren't covered, and neither are bet sizes outside this solution. Poker Skill read the numbers and wrote the explanation.
- Line to this decision
-
F-F-F-R2.5-F-C·flop X-X, turn (to act) - Solver notation
-
7h5c3d2s. F fold, X check, C call, R2.5 a bet or raise to 2.5 bb, RAI all-in.
Solution read Oct 1, 2026. Each hand-class row is the solver's own total for that class. Ranges are shown by class: how many combos of each class are in the range, and what share that is of the combos the board leaves possible.