Let's see how it works and how are these combinations being formed and ranked.
Ace, King, Queen, Jack and Ten of the same suit. The rarest and most powerful combination.
: 3♣ T♥ J♥ Q♥ K♥
You win because your have collected a royal flash - the highest-ranking poker hand. Your opponent has collected a straight.
Your winning hand: A♥K♥Q♥J♥T♥
Five cards of the same suit in order of rank.
: K♦ 7♥ 8♥ 9♥ 6♥
You win because you have a higher straight flush. You have ten-high straight flush while your opponent has nine-nigh straight flush.
Your winning hand: T♥9♥8♥7♥6♥
4 of a Kind
Four cards of the same rank.
: A♦ A♣ K♥ 3♠ 7♠
You win because you have collected 4 of a kind. Your opponent has collected Full House - Kings Full of Aces ( K♦K♣K♥A♦A♣)
Your winning hand: A♥A♠A♣A♦K♥
Three cards of the same rank and a pair.
: A♠ A♣ K♣ 2♦ 7♥
If both players have a Full House, then the one with the higher-ranking three cards wins. You have a full house with aces full of kings while your opponent has kings full of aces.
Your winning hand: A♥A♠A♣K♣K♠
Five cards of the same suit.
: J♠ T♠ 6♠ 3♦ 8♥.
If both players have a flush then the one with the highest card of the suit wins. You win because you have ace-high flush while your opponent has king-high flush.
Your winning hand: A♠J♠T♠6♠5♠
Five cards in order of rank.
: 6♣ 7♥ 8♠ K♦ 9♦
You win because your straight is higher — your top card is T♠, while the enemy's is 9♦. The straight with the highest top card wins.
Your winning hand: T♠9♣8♠7♥6♣
3 of a Kind
Three cards of the same rank.
: A♠ K♣ T♦ 4♥ 8♠
You win because you have three aces while your enemy has three kings. AAA beats KKK just as 555 beats KKK.
You winning hand: A♠A♣A♥K♣T♦
: A♥ K♣ 7♦ T♦ 3♠
You win because you have top pair A♠A♥K♦K♣ and the enemy has A♦A♥T♠T♦. Another example: KK 22 beats QQ TT.
: A♥ K♦ T♦ 7♣ 4♥
Both players have collected a pair but you have a higher one so you win.
Winning hand: A♠A♥K♦T♦7♣
: J♠ 7♣ 6♣ 2♥ 5♦
No hand is made for both players so you win since you have the highest card - King.
Winning hand: K♦J♠8♠7♥6♣