Offsuit ace boundary
AKo and AQo mix 3-bet and fold with no call, while AJo mixes call and fold with no 3-bet.
Preflop range · 6-max · 40bb
SB defense vs CO open
GTO SB response to a CO open (6-max, 40bb): call, 3-bet, fold as frequencies — 13 combos call, 4 3-bet. Real data from the Pokerai API.
Scenario SB vs COStack 40bbAction CO open 2.2bbOutput 169 starting hands
Complete 13×13 range
| AA | AKs | AQs | AJs | ATs99 | A9s | A8s51 | A7s | A6s | A5s88 | A4s34 | A3s | A2s |
| AKo50 | KK | KQs | KJs | KTs96 | K9s40 | K8s | K7s | K6s | K5s | K4s | K3s | K2s |
| AQo56 | KQo8 | QJs60 | QTs31 | Q9s | Q8s | Q7s | Q6s | Q5s | Q4s | Q3s | Q2s | |
| AJo10 | KJo | QJo | JJ | JTs18 | J9s | J8s | J7s | J6s | J5s | J4s | J3s | J2s |
| ATo | KTo | QTo | JTo | TT | T9s25 | T8s | T7s | T6s | T5s | T4s | T3s | T2s |
| A9o | K9o | Q9o | J9o | T9o | 99 | 98s22 | 97s | 96s | 95s | 94s | 93s | 92s |
| A8o | K8o | Q8o | J8o | T8o | 98o | 88 | 87s | 86s | 85s | 84s | 83s | 82s |
| A7o | K7o | Q7o | J7o | T7o | 97o | 87o | 77 | 76s | 75s | 74s | 73s | 72s |
| A6o | K6o | Q6o | J6o | T6o | 96o | 86o | 76o | 6688 | 65s | 64s | 63s | 62s |
| A5o | K5o | Q5o | J5o | T5o | 95o | 85o | 75o | 65o | 5586 | 54s | 53s | 52s |
| A4o | K4o | Q4o | J4o | T4o | 94o | 84o | 74o | 64o | 54o | 44 | 43s | 42s |
| A3o | K3o | Q3o | J3o | T3o | 93o | 83o | 73o | 63o | 53o | 43o | 33 | 32s |
| A2o | K2o | Q2o | J2o | T2o | 92o | 82o | 72o | 62o | 52o | 42o | 32o | 22 |
AI Coach · Range interpretation
How to interpret this SB vs CO range
Against a CO open, this SB preset shows a very selective 3-bet and call range, with KJs and TT as the only pure 3-bets.
The grid places several suited aces, suited broadways, and pairs in call or call/fold branches, while many other visible hands fold. A useful study pattern is the contrast between mixed offsuit aces such as AKo and AQo and the call-oriented suited holdings.
Pair distribution
88, 77, 44, 33, and 22 are pure calls; 66 and 55 are call-heavy mixes, while TT is the only pure 3-bet pair.
Suited broadway split
KJs is a pure 3-bet and KQs a pure call; QJs mixes 3-bet/call, while QTs and JTs mix call/fold.
Use three columns—3-bet, call, and fold—and repeatedly place AKo, AQo, QJs, KJs, KQs, and the listed pairs from memory.
Quick answers
SB vs CO FAQ
Short answers derived from this exact preset.
How often does SB vs CO continue?
In this preset, it continues with about 7% of all starting combinations through a call or 3-Bet.
Which hands take the 3-Bet action?
Read the red portions of the grid. Solid red cells are pure; split cells use the displayed 3-Bet frequency.
Why are some hands mixed?
A mixed cell means more than one action belongs in this solved preset. The percentages specify how often each action is used.
Get this range via the API
One call returns all 169 hands as {fold, call, raise} frequencies:
POST /v1/gto/preflop/range
POST https://pokerai.bet/v1/gto/preflop/range { "positions": { "hero": "SB" }, "preflop_version": "6max_RC_40bb", "preflop_actions": [ { "position": "SB", "action": "small blind", "amount": 0.5 }, { "position": "BB", "action": "big blind", "amount": 1 }, { "position": "CO", "action": "raise", "amount": 2.2 } ] }
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