How to Play 40 Big Blinds in a Tournament

Forty big blinds feels deep after you have been short, but it is not a cash-game stack. You can play the flop, turn, and river, call raises, and 3-bet—reraise before the flop—without shoving. Still, one large preflop pot can leave very little room later.

The short answer

Open to about 2–2.3 big blinds (2–2.3bb). Against a 2.2bb open, 3-bet to roughly 6–6.5bb in position or 7.5–8bb out of position. Keep some calls, and always check the shorter stacks behind you. You have room to play, but every raise should come with a plan for the next action.

Three useful words

Stack coverage means having more chips than another player, so you can knock them out. Effective stack is the smaller stack actually at risk. ICM pressure comes from the Independent Chip Model and means busting can cost more than doubling up helps near a meaningful payout jump.

Two quick examples—with actual sizes

• Reasonable: You hold A♣ Q♣ in the cutoff after the hijack opens to 2.2bb. Calling is fine; a 3-bet around 6–6.5bb also keeps room to fold or continue. Shoving 40bb usually makes worse hands fold and better hands call.
• Reasonable: You open the button with 9♠ 8♠ to 2.2bb. The 18bb big blind shoves. Folding can be completely fine; opening did not commit you.
• Not reasonable: You call a 10bb 3-bet with K♥ J♦ because both starting stacks showed 40bb. The large size leaves a shallow pot where a dominated top pair can cost the rest.

Practice this spot first

Ace-queen suited looks like a routine continue against a hijack open. The 27bb button behind makes it less routine because they can squeeze all-in. Choose call or 3-bet, then explain how that short stack changed you.

PRACTICE SPOT · GTO DOJOPlay this spot ↗

Open without turning every hand into a stack decision

Opening to 2–2.3bb leaves room to fold, call, or raise again. Most positions still raise or fold, while the small blind can also limp. Open shoves are rare at 40bb because risking the whole stack to win the blinds throws away too much postflop value.

The players behind matter. A 20bb stack can move all-in over your raise and force an awkward decision, even when you and the original raiser started with 40bb.

Keep calls in the tree

Calling works best when you will act last. If the hijack opens to 2.2bb and you hold A♣ Q♣ in the cutoff, calling keeps worse hands in and gives you position on the opener. Calling the same hand from the small blind lets the big blind squeeze and leaves you acting first after the flop. That does not make the call impossible; it makes the cost visible.

Do not copy the hands you would call with in a cash game. Antes, unequal stacks, and tournament payouts change both the price of a call and the cost of losing.

Put numbers on the 3-bet

If the cutoff opens to 2.2bb, an in-position 3-bet around 6–6.5bb is a useful starting point. From the small blind, use roughly 7.5–8bb because you will act first after the flop. Jumping to 10–12bb without a reason leaves too little room for later decisions.

Say the cutoff raises to 2.2bb, you reraise from the button to 6.2bb, and the cutoff calls. The flop pot is about 14bb with roughly 34bb left. The stack-to-pot ratio, or SPR, is therefore about 2.4. With A♠ A♦ on K♣ 7♥ 2♠, several bets can reasonably put the whole stack in. With A♠ Q♠ on 9♥ 8♥ 7♣, ace-high is not committed just because there was a preflop reraise.

Apply ICM specifically

Near payouts, covered players have an extra reason to avoid all-in calls. Say seven players remain, six are paid, you have 40bb, another player has 5bb, and the 60bb chip leader shoves into your big blind. A♣ J♣ may fold even if it would call for chips alone: losing knocks you out before the 5bb stack. The leader can attack that caution but still needs hands that are not hopeless when called. Always state the pay jump, stack sizes, and who covers whom. “ICM pressure” alone explains nothing.

Rule of thumb: At 40bb, you can raise, call, or fold until one large preflop bet removes those choices. Check the pot and remaining stack before choosing the size.

Practice the stack behind you

Replay the A♣ Q♣ cutoff spot above with the button at 40bb, then 20bb, then 12bb. Before checking, predict when calling becomes less attractive because the button can shove. Keep the cards and opener fixed so the shorter stack is the only reason your answer changes.

Keep studying

Step down to the tighter decisions at 30 big blinds, or examine how payout pressure changes ranges even with playable stacks. To understand the most committing preflop choice, study when a 5-bet shove actually makes sense.