PokerSolver
PokerSolver/6-max · 100bb · SB 0.4bb · 5% rake, cap 3bb/BB vs SB 4-bet 20.6bb

BB vs SB 4-bet 20.6bb

6-max · SB 0.4bb · 5% rake, cap 3bb (blinds 0.4/1bb) · 100bb · SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.6bb · Big blind to act

6-max · 100bb · SB 0.4bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 29.6bbYour cards?
9bb
20.6bb

Tap your two cards.

Big blind's range

502 of 1,326 combos get here
Fold 55.3%Call 36.1%All-in 100bb 8.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.6bb in 6-max · SB 0.4bb · 5% rake, cap 3bb at 100bb?

SB opens 3bb, BB 3-bets to 9bb, SB 4-bets to 20.6bb in 6-max · SB 0.4bb · 5% rake, cap 3bb, 100bb: the big blind (BB) folds 55.3%, calls 36.1% and goes all-in 100bb 8.6%. Always call: AA, TT, 77-88, 55, AJs-AQs, A7s, K9s+, QJs, J8s+, T7s+, 98s, 75s+, 64s+, 53s+, AJo-AQo, KQo. Always all-in 100bb: QQ, A5s, AKo. Mixed: KK, JJ, AKs, A2s-A4s, 43s.

Always fold
Q2s, J2s-J6s, T4s-T6s, 52s, A2o-A6o, K6o-K9o, Q7o-Q9o, J8o-J9o, T8o+
Always call
AA, TT, 77-88, 55, AJs-AQs, A7s, K9s+, QJs, J8s+, T7s+, 98s, 75s+, 64s+, 53s+, AJo-AQo, KQo
Always all-in 100bb
QQ, A5s, AKo
Mixed
KK, JJ, AKs, A2s-A4s, 43s
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).