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

BB vs BTN 3-bet 4bb

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

6-max · 100bb · SB 0.4bb · 5% rake, cap 3bbChange game

PlayersBlinds & rakeEff. stack

Stacks (bb), if they differUTGHJCOBTNSBBB

Pot 7.4bbYour cards?

1bb

2bb

4bb

0.4bb

Tap your two cards.

Big blind's range

1,326 of 1,326 combos get here

Fold 90.6%Call 3.8%Raise 9.2bb 5.4%All-in 100bb 0.2%

Tap a hand, or type one above, to see its exact mix.

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

CO opens 2bb, BTN 3-bets to 4bb in 6-max · SB 0.4bb · 5% rake, cap 3bb, 100bb: the big blind (BB) folds 90.6%, calls 3.8%, raises 9.2bb 5.4% and goes all-in 100bb 0.2%. Always call: 99. Always raise 9.2bb: AA, 88, AJs-AQs, QJs. Mixed: TT-KK, 33-77, AKs, A9s-ATs, A3s-A6s, KTs+, K6s, QTs, JTs, 54s, AQo+, KQo.

Always fold: 22, A7s-A8s, A2s, K7s-K9s, K2s-K5s, Q2s-Q9s, J2s-J9s, T2s+, 92s+, 82s+, 72s+, 62s+, 52s-53s, 42s+, 32s, A2o-AJo, K2o-KJo, Q2o+, J2o+, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call: 99
Always raise 9.2bb: AA, 88, AJs-AQs, QJs
Always all-in 100bb: No hand plays this every time
Mixed: TT-KK, 33-77, AKs, A9s-ATs, A3s-A6s, KTs+, K6s, QTs, JTs, 54s, AQo+, KQo

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).