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

BB vs BTN 4-bet 20.6bb

6-max · SB 0.4bb · 5% rake, cap 3bb (blinds 0.4/1bb) · 100bb · BTN opens 3bb, BB 3-bets to 9bb, BTN 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 30bbYour cards?
9bb
20.6bb
0.4bb

Tap your two cards.

Big blind's range

370 of 1,326 combos get here
Fold 63%Call 25.4%All-in 100bb 11.6%
Tap a hand, or type one above, to see its exact mix.

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

BTN opens 3bb, BB 3-bets to 9bb, BTN 4-bets to 20.6bb in 6-max · SB 0.4bb · 5% rake, cap 3bb, 100bb: the big blind (BB) folds 63%, calls 25.4% and goes all-in 100bb 11.6%. Always call: JJ, 44-66, AJs-AQs, KTs+, QJs, 76s, 54s. Always all-in 100bb: KK, AKo. Mixed: AA, QQ, TT, 77-88, AKs, A4s-A5s, JTs, T8s+, 87s, 65s, AQo.

Always fold
A6s, A3s, K2s-K8s, Q4s-Q9s, J7s-J9s, J5s, T6s-T7s, 97s+, 86s, 75s, A7o, A5o, KTo+, QTo+, JTo
Always call
JJ, 44-66, AJs-AQs, KTs+, QJs, 76s, 54s
Always all-in 100bb
KK, AKo
Mixed
AA, QQ, TT, 77-88, AKs, A4s-A5s, JTs, T8s+, 87s, 65s, AQo
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).