Hopefully this isn't too hard. Just checking up on my overcall theory.
MP3 is a LAG. Once he calls the river, he is saying "I don't have AA".
Button is super passive! On a previous hand he open-completed/called-down with 99 on an undercard board heads-up after I raised preflop. His AF is miniscule.
The turn 3-bet is very weird. Button would certainly coldcall 23s and AA preflop, but he might play this way without the nuts too - I don't know him well enough.
On the river
Button has 1 BB left after his raise. Since Button is capable of the nuts and I think MP3 will fold everything save perhaps AK when I 3-bet, is my river play best?
Party Poker 5/10 Hold'em (10 handed)
converter
Preflop: Hero is SB with K[img]/images/graemlins/heart.gif[/img],K[img]/images/graemlins/club.gif[/img].
<font color="#666666">5 folds</font>, <font color="#CC3333">CO raises</font>, Button calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">BB folds</font>, CO calls, Button calls.
Flop: (10 Hero) A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(10 players)</font>
<font color="#CC3333">Hero bets</font>, MP3 calls, Button calls.
Turn: (6.50 BB) 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(10 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP3 raises</font>, <font color="#CC3333">Button 3-bets</font>, <font color="#CC3333">Hero caps</font>, MP3 calls, Button calls.
River: (15.50 BB) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(10 players)</font>
<font color="#CC3333">Hero bets</font>, MP3 calls, <font color="#CC3333">Button raises</font>, Hero calls, MP3 calls.
Final Pot: 21.50 BB