搬个2+2的牌谱来，

2/5 hardrock tampa

Villain is an aggressive TAG reg sitting with $2300.

Hero is sitting with $2400 and has no specific reads on villain except that he is raising a decent amount pre.

UTG ($500) straddles to $10
MP($700) limps, BTN($500) limps. Hero completes with 44 in SB. Villain raises to $55 in BB. straddler calls, MP calls, BTN folds, hero calls.

Flop ($230) K94sss
Hero checks. Villain bets $110. folds to hero who calls.

Turn ($450) 2h
Hero checks, Villain bets $275. Hero calls

River ($1000) 9c
Hero checks, Villain goes all in for $1860.

Hero?

我认为river hero要bet而不是check 。  深筹码确实又是另一个游戏了。

BB有KK/99，FLOP打，TURN就不会打。BB有FLUSH，FLOP打TURN打，RIVER就不该打。BB有K9，PRE-FLOP就不会做$55的RAISE。这手牌前后有点矛盾。如果对手不是很鱼的人，那么这手牌BLUFF的味道就很浓了。
假如HERO的BANKROLL支持的话，我觉得应该可以CALL。很可能是As抽花失败。

到了river 在对手眼里hero的range 应该有44 99 和flush（flush draw这里关系不大 不考虑了)
hero c/c turn 所以nuts flush 的可能很小了基本没有   
hero check river 了 99可能性降掉一些
剩下44和非nuts flush了

1 KK 99只要44的value 不要非nuts flush的value了
2 对手只有As没有成flush想bluff 掉hero手里所有的非nuts flush 和44
   因为hero手里正常只有一个打了折的99能call
   而99 KK都是顺理成章在对手的range里
3 如果对手是nuts flush的话没有必要这样打

而情况1的话也有一些问题 就是如果对手是KK的话 hero手里还可能有少量的99 会撞墙
并且hero的44很多时候也很难call这个超pot的bet

情况2里对手combo还蛮多的

这里只能call

AsK有可能，但是KK，99turn上bet也正常吧，毕竟SB flop只是call，读SB在draw牌。
但是这种超pot allin第三nuts，call需要勇气。

下家坐着这么一位选手，44能不能在前面4次check call里找一个机会扔掉?

怎么感觉这是典型的hero被针对了的情况？

Hero说对对手没有阅读，不表明对手对他没有阅读。要是这样，他还是要从自己给对方的印象入手，旁人只能看热闹了。

I think pre, flop , turn is really standard..

river:   hmmm... tough decision, hero don't show his hand str actively by bet/raise, but his call still have some tells.  

I thought V put him on small flush + sets + two pairs like K9hh I'm not sure hero's VPIP support this or not .

What's his range, very small  1% bluff, KK for sure, and some AJ/AQs even some semi hands like AsKx ? Hero said V PFR is high, so I think it's maybe reasonable to put also 99 to put into his range?

I think all QQ/JJ/TT don't play this line unless he knows Hero so well.

call need at 2:3 pot odds which is almost 40%.   by purly counting combos I thought this is a marginally +EV call.
But think about the emotional impact after call and lose all day profits, I highly doubt my conclusion above


Revision:   Back to thought again, I think it's a fold.  Can V bet so huge with his flush ? that's very very high thinking level ( the blurry bet ) , I don't think live player do this often. So the weight inclines to the monster hands..

河牌应该主动下注。河牌这个需要对人的解读。发牌谱这个人打的真弱。

河牌这个下注是个nuts or nothing的下注。我们来看看前面的几个下注。

pre flop open，两高张，对子，k9s。 flop 不到半池，turn上半池。这根本不是nothing的打法。nothing应该是flop重锤，turn重锤，河牌all in。这样我才考虑去抓对手。我相信对手是有真东西的。44不领先所有成牌。所以是个果断弃牌。

还有一种特殊可能，我见过几次。就是线下对对手解读太深，500bb这个深度，对手不是nuts必弃牌的紧弱。一个老pro对我说过，他对一个紧弱的打法就是，只要对手河牌一check，他就all in。他清了对手太多次，导致对手极度怕他。所以他经常all in对手。