i can not fold full nevet
There's no need to fold, because the only remaining opponent checks. The OP should just check behind here. But, if his opponent had bet, he should be folding this.
This is a good hand for talking about the difference between absolute hand strength and relative hand strength. Full houses are absolutely strong
hands. They rank very highly, and you will win a lot of money with them. But, on this board J-J-J-7-9, when you hold 7-7, every hand that wants to put money into the pot is bigger than yours. Think about what beats you.
- You lose to: 8-8, 9-x, 10-10, J-x, Q-Q, K-K, and A-A.
- You tie with: 7-x (which is even more unlikely because you hold two 7s).
- You beat: 6-6, 5-5, 4-4, 3-3, and 2-2 and all unpaired bluffs (but those hands usually don't put money in here)
The only hands that put more money in are full houses that beat J-J-J-7-7 or quads. Well, I suppose there could have been a possible straight flush out there too (OP didn't post suits) and you would lose to that also. In this situation, your hand lacks relative strength because the hands you are up against (when money goes in) are much stronger than your hand.
Betting, after being checked to, is an even worse spot than facing a bet. When you face a bet, there is a
small possibility that your opponent is turning an unpaired hand or small pair into a
bluff. It's probably still a fold against most players unless you have a history. But, when they check and you shove, you are never getting called by the hands they would be
bluffing with. You are just driving yourself to value-town for them.
Edit: a 25% range has 75 combos of 8-8, 9-x, 10-10, J-x, Q-Q, K-K, and A-A, 2 combos of 7-x, and 18 combos of small pairs with 90 combos of A-x hands. But, weighted for how often each of these groups put money in, you are probably 95%+ going to be running into those combos that beat you.
Edit 2: For us to profitably call a pot-sized river bet with 7-7 on a board of J-J-J-7-9, we need to be sure our opponent is betting a range of {AK, AQ, AJ, AT, KQ, 7-x, 9-x, and all pairs 22 through AA} or wider. If he's shoving all boats or better {22 through AA, J-x, 7-x, and 9-x} we are going to lose too often to call a pot sized bet.