PokerSolver
PokerSolver/6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb/BTN vs CO open 2bb

BTN vs CO open 2bb

6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (blinds 0.5/1bb, ante 0.16bb) · 40bb · CO opens 2bb · Button to act

6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bbChange game
Stacks (bb), if they differ
Pot 4.46bbYour cards?
0.5bb
1bb
2bb

Tap your two cards.

Button's range

1,326 of 1,326 combos get here
Fold 81.5%Call 3.9%Raise 4/6bb 14.6%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the button (BTN) when CO opens 2bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb at 40bb?

CO opens 2bb in 6-max · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb, 40bb: the button (BTN) folds 81.5%, calls 3.9% and raises 4/6bb 14.6%. Always call: A9s, KTs-KJs. Always raise 4/6bb: 88+, AJs+, A5s-A7s, AQo+, QJo. Mixed: 44-77, ATs, A8s, A2s-A4s, KQs, K7s-K9s, Q9s+, J8s+, T8s+, 98s, A9o-AJo, KJo+, JTo.

Always fold
22-33, K2s-K6s, Q2s-Q8s, J2s-J7s, T2s-T7s, 92s-97s, 82s+, 72s+, 62s+, 52s+, 42s+, 32s, A2o-A8o, K2o-KTo, Q2o-QTo, J2o-J9o, T2o+, 92o+, 82o+, 72o+, 62o+, 52o+, 42o+, 32o
Always call
A9s, KTs-KJs
Always raise 4/6bb
88+, AJs+, A5s-A7s, AQo+, QJo
Mixed
44-77, ATs, A8s, A2s-A4s, KQs, K7s-K9s, Q9s+, J8s+, T8s+, 98s, A9o-AJo, KJo+, JTo
Settings: 6-max · 40bb · SB 0.5bb · ante 0.16bb · 5% rake, cap 8bb (small blind 0.5bb, big blind 1bb, an ante of 0.16bb from every player, 40bb stacks, 5% rake capped at 8bb; no rake when no flop is dealt). Solver: HoldemResources Calculator (HRC) (HRC CI 24.93). 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: no game we have checked.

Close: CoinPoker cash with antes NL50 (rake before the flop in 3-bet pots there, none here).

Rake sources: the ante from 93 of our own CoinPoker hands at $0.25/$0.50 with a $0.08 ante, played 2026-09-30; the caps and the preflop rule from coinpoker.com/games/texas-holdem/, fetched 2026-10-31.