KK 3 bet pot. Ship on sickest turn card in the world

CO is 15/13 over big sample. Nothing too special about him

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

saw flop

SB ($52.50)
Hero (BB) ($62.80)
UTG ($10)
UTG+1 ($26.75)
MP1 ($50)
MP2 ($55)
MP3 ($66.20)
CO ($55.65)
Button ($50)

Preflop: Hero is BB with Khttp://www.flopturnriver.com/phpBB2/...iles/spade.gif, Khttp://www.flopturnriver.com/phpBB2/...es/diamond.gif
4 folds, MP3 calls $0.50, CO bets $2.50, 2 folds, Hero raises to $10, 1 fold, CO calls $7.50

Flop: ($20.75) Jhttp://www.flopturnriver.com/phpBB2/...iles/spade.gif, 9http://www.flopturnriver.com/phpBB2/...es/diamond.gif, 7http://www.flopturnriver.com/phpBB2/...es/diamond.gif (2 players)
Hero bets $15, CO calls $15

Turn: ($50.75) Qhttp://www.flopturnriver.com/phpBB2/...es/diamond.gif (2 players)
Hero bets $37.80 (All-In)

Total pot: $50.75 | Rake: $2.45

What ranges did you give him preflop after he called the 3bet, and on the flop?

he could be playing a wider range since he's IP
however this is super standard we're not even dead if he has a set/flush since we have diamond outs (unless he has the nut flush)

there is no folding a KK overpair in 3b pots
the only other option is to check turn and call a shove if you expect him to shove a wider range on the turn than call