Q&A for How to Play Big Two

All the same suit (flush), all five cards are in numerical order (a straight), or three of a kind and one pair (full house).

You can beat a four of a kind by placing a bigger four of a kind, for example, 6666X beats 4444X, or by placing a straight flush, which is a straight with the same symbol.

No, it won't work, because you'd know the other player's cards. Big 2 works best with 3-6 players.

If you play regularly, then you will remember the rules automatically. For now you can print them and keep them in front you. As you play you will remember them from repetition.