PokerSolver
PokerSolver/6-max · 100bb · SB 0.4bb · 5% rake, cap 3bb/BB vs CO 3-bet 4bb

BB vs CO 3-bet 4bb

6-max · SB 0.4bb · 5% rake, cap 3bb (blinds 0.4/1bb) · 100bb · CO limps, BB isolates to 2bb, CO 3-bets to 4bb · Big blind to act

6-max · 100bb · SB 0.4bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 6.4bbYour cards?
2bb
4bb
0.4bb

Tap your two cards.

Big blind's range

498 of 1,326 combos get here
Fold 51%Call 33%Raise 9.2bb 14.7%All-in 100bb 1.3%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when CO limps, BB isolates to 2bb, CO 3-bets to 4bb in 6-max · SB 0.4bb · 5% rake, cap 3bb at 100bb?

CO limps, BB isolates to 2bb, CO 3-bets to 4bb in 6-max · SB 0.4bb · 5% rake, cap 3bb, 100bb: the big blind (BB) folds 51%, calls 33%, raises 9.2bb 14.7% and goes all-in 100bb 1.3%. Always call: 99, 55, A9s, KJs, K2s, T5s. Always raise 9.2bb: AA, JJ. Mixed: QQ-KK, TT, 77-88, 44, 22, ATs+, A4s-A8s, A2s, K9s-KTs, K6s-K7s, K3s, QTs+, J9s+, T8s+, T2s, 96s+, 75s+, 64s+, 52s-53s, AJo+, A8o, KJo+, 65o.

Always fold
Q6s, J6s, 95s
Always call
99, 55, A9s, KJs, K2s, T5s
Always raise 9.2bb
AA, JJ
Always all-in 100bb
No hand plays this every time
Mixed
QQ-KK, TT, 77-88, 44, 22, ATs+, A4s-A8s, A2s, K9s-KTs, K6s-K7s, K3s, QTs+, J9s+, T8s+, T2s, 96s+, 75s+, 64s+, 52s-53s, AJo+, A8o, KJo+, 65o
Settings: 6-max · 100bb · SB 0.4bb · 5% rake, cap 3bb (small blind 0.4bb, big blind 1bb, 100bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Fits exactly: GGPoker Rush & Cash NL5, NL25; Natural8 Rush & Cash NL5, NL25.

Close: GGPoker regular cash NL500 (rake cap 1.6bb there, 3bb here).

Close: CoinPoker cash NL500 (rake cap 1.6bb there, 3bb here; only its tables without antes).

Close: WPT Global cash NL5 (rake cap 6bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: WPT Global cash NL50 (rake cap 4bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: Natural8 regular cash NL500 (rake cap 1.6bb there, 3bb here).

CoinPoker tables with antes: their own chart.

Rake sources: ggpoker.com/poker-games/texas-holdem (fetched 2026-10-31); Rush rake and preflop rake confirmed on our own GG exports (972 of 1,034 pots, 210 of 211); regular tables' preflop rule from natural8.com/en/poker/texas-holdem (same network, fetched 2026-10-31); natural8.com/en/poker/rush-and-cash (fetched 2026-10-31; caps $0.06 to $6, 3bb at every stake); the same GGNetwork pools as GGPoker, whose preflop rake we confirmed on GG exports; coinpoker.com/games/texas-holdem/ (caps and the preflop rule) and coinpoker.com/guides/poker-rake/ (5%), fetched 2026-10-31; wptglobal.com/poker/poker-table-rake (fetched 2026-10-31); natural8.com/en/poker/texas-holdem (fetched 2026-10-31; caps by players dealt in, 3-bet pots raked before the flop).