Is there a tick to calculating post-flop odds in Omaha?

[westside_eh]

Can you use your outs to calculate your odds of winning a hand in omaha? Does it work out similarily to the hold 'em trick (multiply by 4 on flop, multiply 2 on turn)?

Thanks

[AaronBrown]

There are more complicated outs in Omaha than Hold'em, especially if you play high-low. But if you've determined which cards win and lose for you on the turn and river, it's pretty much the same. The only difference is you see two more cards in Omaha. In Hold'em you should really multiply by 100/47 = 2.13 on the river and 100/47 + 100/46 = 4.30 on the turn; in Omaha it's 100/45 = 2.22 on the river and 100/45 + 100/44 = 4.49 on the turn, so using 2 and 4 is about equally good in both games.

Actually, it's a bit more complicated than even that, but for practical playing purposes, 2 and 4 are close enough most of the time.

[ACPlayer]

Using 4 is OK in holdem as the draws are usually 8 or 9 way draws and only occaisonally 15 plus way. Also in holdem the odds you calcualate against are usually TPTK and/or overpair so you can "get by" with 4 as a multiplier most of the time.

In Omaha your draws (that you are planning to commit all you chips too) are usually at least 13 way and often much more. Also usually you are considering the high likelihood of being up against a set and not against TPTK. Against a set because of redraws and lockouts the 4 multiplier breaks down much faster.

I suggest that the OP run 2-dimes simulations and record the ev's in a table to make better decisions for all his chips.