Buddy in Omaha you MUST play with 2 from your 4 starting
hands. You can't have flush with just 1 card in that color in your hand. You MUST have another hearth here to win. Before you go in the game, why you just don't watch some tutorial and read the rules of game on the net, instead of posting thread here. I don't blame you, but how you got into something you have no idea how its working.
Player X : As Ac Kc Kh
Player Y : 10c 10s Jh Qh
Board : 10h 9h 8s
Player X have: Pair A's
Player Y have: Straight 8 to Q
Player X have: 3 of a kind K's
Board : 10h 9h 8s Ks => in this situation
Player Y have: Straight 9 to K's
Player X have : Full House K's over 8s
Board : 10h 9h 8s Ks 8c => in this situation
Player Y have : Full House 10's over 8s
Omaha is game when you constantly play with 2 of your BEST HAND at the moment, it can change a lot and it will, you will need to learn when to go, when then is possibility for making straight or flush with the next card. You have a long way, but Im sure you will get there. I hope this example helped you.