Flatting AA preflop

It makes sense because you let villains try to bluff you out of a very big pot and/or value bet worse hands

€0.25 NL FAST (6 max)

BTN: 47.96 BB
SB: 100 BB
Hero (BB): 100 BB
UTG: 114.92 BB
MP: 92.6 BB
CO: 103.12 BB

SB posts SB 0.4 BB, Hero posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has A♣ A♦

fold, fold, fold, fold, SB raises to 2.52 BB, Hero raises to 10 BB, SB raises to 22 BB, Hero calls 12 BB

Flop: (44 BB, 2 players) 4♠ 8♠ Q♦
SB bets 11.28 BB, Hero calls 11.28 BB

Turn: (66.56 BB, 2 players) 3♦
SB bets 66.72 BB and is all-in, Hero calls 66.72 BB and is all-in

River: (200 BB, 2 players) K♠

SB shows Q♥ K♣ (Two Pair, Kings and Queens)

Hero shows A♣ A♦ (One Pair, Aces)

SB wins 190 BB

Agreed, when we 5bet we fold out 99% of villains range, so flatting makes sense.

I had almost this exact hand last night. I 3 bet preflop and reraised the flop. Also got it all in on the turn

I don't see solver flatting much AA vs 4B tbh

It's only BB vs SB, were AA is a pure call vs 4b. Else it's done at a very low frequency. I'd say the solver protects its call-range vs 4b with doing so.

In my experience players don't 4bet enough from the SB in BvB. They simply don't have as much 4bet/fold hands as they should have. I jam and expect to be called a lot.

I'd only flat here if I had prior evidence that an individual villain was capable of 4bet/folding here.

Optimuspoker solver flats AA from BB vs SB 4B

Optimuspoker settings : low stakes 100bb deep, BB vs SB 4B

By 4 betting you let the light 3-better off the hook, if he is likely to spew off post flop. It is especially nice when you will be IP.