1. d4 d5 2. Nc3

This move is not fully a mistake, but is definetly not the best move. 2. c4 would have been much better. If white plays d4 but doesnt want to play the queens gambit he may aswell learn e4 where he will get a better game.

2...Nf6 3. Bg5 Bf5 4. Bxf6

So far both players have developed their pieces. But now white swaps off his bishop giving black:
a) the bishop pair
b) a stronger hold on the center after gxf6

4...exf6

gxf6 is probably stronger, giving black an extra center pawn to support e7-e5, and letting the bishop developed to g7. On g7 the black bishop puts pressure on the dark center squares.

5. e3 Nc6

Blocking the c-pawn, making it very hard to attack whites center.

6. Bb5



Bd6 7. Bxc6+ bxc6

Instead of taking the knight, white should have played Qf3, with a double attack on the bishop and d5 pawn. Bxc2 is not a big deal - Rc1 gives white loads of compensation (well placed and more active pieces, central pressure) for only a pawn. Now black can use both c-pawn to attack and/or control the center, and the open b-file could be useful.

8. Nf3 Bg4 9. h3 Bh5 10. g4 Bg6 11. O-O h5



This pawn move has some good points and some bad points. It attacks the weakened white king position where the black bishop and rook both point towards. On the other hand blacks own king is still on his starting square - since the queenside is open and the kingside is about to become a warzone, there is nowhere for it to hide.

12. gxh5

Much better was Nh4.

Bxh5 13. Kg2 Qd7 14. e4 Qxh3+!

A great find by black, finishing the game off in style!

15. Kxh3 Bxf3#
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