heads up poker change the rank up the flop when compared to a 7 poker table. This is becaouse to the chance that a player is heading a player with stronger hand which dominates (is a 55% percent that you loose. Here we will teach how to calculate ther odds before the flop in the game and will show list of the main pre-flop chances which every one should know.en you are done

There are 1223 starting hands in Texas Hold em: 1 of the original 52 card. and then one of the remaining 51 cards:

If we drop differences of suits these can reduced to 139 hands. 12 pairs, 78 unpaired and the remaining 78 are unsuited unpaired cards.

The cards that you are dealt affect the probability of your opponent having the same holding. For example if you are dealt an Ace before the flop there are only 3 remaining aces in the deck – the chances of an opponent holding an ace has been reduced by 25%.