Poker Stars, $0.05/$0.10 No Limit Hold'em Cash, 6 Players

SB: $8.28 (82.8 bb)
BB: $70.56 (705.6 bb)
UTG: $16.33 (163.3 bb)
MP: $13.30 (133 bb)
Hero (CO): $10.15 (101.5 bb)
BTN: $11.85 (118.5 bb)

Preflop: Hero is CO with K K
2 folds, Hero raises to $0.25, BTN raises to $0.90, 2 folds, Hero raises to $2.40, BTN calls $1.50

Flop: ($4.95) A 3 6 (2 players)
Hero bets $1.40, BTN calls $1.40

Turn: ($7.75) 2 (2 players)
Hero checks, BTN checks

River: ($7.75) A (2 players)
Hero bets $6.35


No info

what range you assume he is calling the 4-bet with?
as played i check river. the donk bet looks pretty bad. unlikely you will get called by QQ-JJ or something.

Where exectly is donk bet here :/

Well at this stake he could obvsly get looked up by QQ JJ (altho maybe not with this awful river sizing).

I would bet a bit more on flop and lot less on river, if betting.

R is a shove not just bet

He shoved HH is wrong

Would x flop. Flop size is pretty good with anything we're betting on this texture. Think pre could be a couple BB's smaller. Rivers probably alright vs most people at these stakes after turn goes x/x. Guess we could bet like $3 instead and expect a decent bit more sigh calls.

Would you then x/c the turn ?

Or say we take the given line but bet $3 OTR and he jams, do we fold with $3.35 getting 5:1 on a call ?

What range would you assign him when he flats the 4-bet ? Without info, I would think this is something like AJs+, AK, TT-QQ. But is he actually going to check AJ-AK OTT? If so, I think he's going to fold TT-QQ to a river jam most of the time say 75% and he'll call all of his Ax OTR (I would think, correct me if I am too optimistic here).
There's 20 combos in that range that beat us and 18 that we beat.
So that there are 20+18*0,25=24,5 combos that he'll call with OTR. Therefore when he calls we win 4.5/24.5=18.4% and consequently loose 81.6%. He'll fold (13.5/38)=35,53%
The EV of shoving here is therefore

EV[shove]= (13.5/38)*$7,75+(24.5/38)*[0.184*$14.1-0.816*$6.35]

EV[shove] = $2.75 - $2,11 = +$0,65

The problem is that if he has more Ax in his range, i.e. hands like AJo, AQo you will loose too often to make the shove +EV, given that he'll call the river with trips (which he will I think).