The A on river is an excellent card for villain bluff, or He could have A in his hand too, so is it better ch/r or bet on the river ?

[converted_hand][hand_history]Poker Stars, $3.19 Buy-in (150/300 blinds, 25 ante) No Limit Hold'em Tournament, 5 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite. View Hand #37424132

CO: 9,791 (VPIP: 32.94, PFR: 21.69, 3Bet Preflop: 6.45, Hands: 85)
BTN: 1,250 (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 13)
SB: 7,477 (VPIP: 15.25, PFR: 12.28, 3Bet Preflop: 8.00, Hands: 59)
Hero (BB): 6,123
UTG: 8,279 (VPIP: 13.89, PFR: 11.76, 3Bet Preflop: 13.33, Hands: 36)

Preflop: Hero is BB with J A
MP raises to 600, 3 folds, Hero calls 300

Flop: (1,475) J 4 K (2 players)
Hero checks, MP bets 826, Hero calls 826

Turn: (3,127) 6 (2 players)
Hero checks, MP checks

River: (3,127) A (2 players)

It depends on Villian's tendency, if he is likely to do bluffs on the river, or is he scared of our Straight draw from the flop, that we will call too. He holds minimal combos of A in his range that we can extract value from, i dont really prefer x/r on that river bcs only hand that pays our raise from his range is QT(16 combos) and sets (9 combos) from whole his range of about 145 combos. So Im more likely to do x/c bcs there are 25 combos in his reange including A9s+, A2-A5s and Ato+, and all of that Aces in his range will not pay our raise on the river. So I will let him to do bluffs with about 95 combos, and do easy call. If he is likely to bluff us, again. That sample u have is too small , so we set him optimal oppening range. And after hand definetly make a note 4 easy life.

this board in especif I would have called if I had checked too. The main doubt is if its better to lead a bet or check to induce the villain's bet. I think I didn't explain correctly sorry.

I put it in Piosolver and the software said that I should lead a bet on the river with my AJo , and do it with some of my J like J7s I think as a bluff.

I don't know why but my image it isn't appearing ....

Yes, but we can easy deselect Kx from his range, bcs he will bet turn, as I remember of the hand now.

We can bet 1.1k on the river, and extraxt value from lower Aces, Jacks, and some of pp.

Probably jamming this one pre 5-handed with ~20bb effective.

As played, leading turn for value unless we have a super solid read that villain will likely stab at this river (which almost all of the time we won't know).

leading turn ? river I understand but turn I don't understand

Yeah, sorry, meant river (not turn).