So, I'm talking normal opening stuff here. 1. e4 e5, White's a tiny bit better, no big deal. What is White's best move on the next turn? Probably Nf3. This moves gains a tempo, because you can attack the pawn in the center, develop a piece, and get ready to castle all at the same time. If you can get a tempo, it's probably a good move.
Do you know that the center of the board is the most important in the beginning of a chess game? Every player is itching to place his pawns, knights, and bishops there to attack the four center squares. Knights like to go to their happy squares! (Lots more choices than if they go to the side, as with Nh3.)
Now Black has to guard this pawn somehow. There are many ways to do it, and they are all bad except for one! My favorite bad choice for Black is 2...f6. This leads to awesomeness for White. Because Black has moved the dreaded f pawn, White can come crashing through with a knight sac then check!
And if I block with the g-pawn?
Fearsome fork! Naturally, 5...Qe7 gives Black a more exciting game than just blocking with the knight or bishop. But White is still nabbing that rook.
I think you'd be pretty happy if I played 4...Ke7, too. Can you find the next two moves that thrust the black king into the open where you'll be able to mate him?
Fun times! Let's look at another way to guard e5. What if you push the pawn on the other side, as in 2...d6?
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