I put here as detailed as I remember the situation in this tournament:
Middlestage of a large tournament, hero has 22-24k chips, one more has 23-25k chips rest at table have 1-5k chips.
50/100 Blinds
Hero gets AK offsuit, raises 12x BB(1200), all fold excpet big stack who calls. The big stack has position on hero.
flop comes KdJd9c, Hero bets 2/3-3/4 of pot, Big stack calls.
pot is approx 6-8k.
turn: 7h, Hero bets half the pot(4k), big stack calls.
pot is approx 16k, Hero has less than 6k left.
river is 2d, Hero checks, bigstacks moves all in.
Hero calls.
Big stacks shows QdKd King flush, Hero shows pair of kings with ace kicker and is out of tournament.
What did I do wrong here?
I prolly should have put him allin on turn and not let him get proper odds to call river.
I put him on a high pair preflop, on flop I got cautious and thought he had flopped 2pair.