GameKnot: annotated chess game

ANNOTATED GAME

Friendly Game
Jad vs. Luiza
Annotated by: hechim

(1414)
Chess opening: Alekhine's defence (B02), Scandinavian variation

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Friendly game. Annotated mainly to analyze the final stage of the game. I was not sure whether my 22nd move was a forced checkmate (and, as it turns out, it wasn't).

1. e4 Nf6	Alekhine's Defense



2. Nc3 d5 3. d4 dxe4 4. Qe2	Mistake: 4. Qe2 Qxd4
	1 comment l-d-j (1747) on 22-Aug-12: We have transposed into the Blackmar-Diemer Gambit, which usually occurs via the move order 1.d4 d5 2.e4!? dxe4 3.Nc3 Nf6. Here 4.f3 is the main move.


4... Bf5	Better: 4... Qxd4
	1 comment cdeburca (1658) on 22-Aug-12: It'd lead to an interesting position for white, albeit the two pawns down may be too much. After 4. ... Qxd4 5. Be3 is the obvious reply, with O-O-O to come. White could get a quick attack going, and will probably recoup the e4 pawn at some stage. The main issue is the awkward positioning of the kingside pieces.


5. Be3 Bg4 6. f3 exf3 7. Nxf3 Nc6 8. O-O-O e6 9. h3 Bh5 10. g4 Bg6 11. Qb5 Bd6	Mistake: 11... Bd6 12. Qxb7 and Black has to move the Knight on c6. Better: 11... Rb8



12. Qxb7 O-O	Mistake: 12... O-O 13. Qxc6



13. Qxc6 Ne4	Mistake: 13... Ne4 14. Nxe4
	1 comment l-d-j (1747) on 22-Aug-12: What is Black doing?


14. Nxe4	Now I'm up two Knights, and controlling the center.



14... Be7	Did not understand the point of this move.
	2 comments l-d-j (1747) on 22-Aug-12: Black wants to avoid exchanges in an attempt to create counterplay. The more pieces off the board, the easier the win for White. That's the reasoning behind the rule 'Exchange pieces when up in material, don't exchange when down in material.' bwaa (1771) on 22-Aug-12: I think Black's last few moves are harder to understand than this one!


15. Bd3 f5	Mistake: 15... f5 16. Qxe6



16. Qxe6+ Kh8 17. Neg5	Plan: threaten a fork with Nf7+, thus exerting pressure and attacking Black's kingside. Might require exchange of light-squared bishops.



17... f4	Blunder: 17... f4 18. Bxg6 Qb8 19. Nf7+ Kg8 20. Bxf4
	1 comment bwaa (1771) on 22-Aug-12: Is it? What about 17...f4?! 18.Bxg6 hxg6! 19.Nf7+ Rxf7 20.Qxf7 fxe3 where White still clearly has a won game but at least the imminent mating attack is stalled until the Rooks can enter the picture (and Black wins a Bishop & Knight for his Rook, which isn't too bad either).


18. Bxg6 fxe3	Blunder: 18... fxe3 19. Nf7+ Rxf7 20. Qxf7



19. Nf7+ Kg8	Blunder: 19... Kg8 20. Nxd8+ and the rest of the game follows. Black should have exchanged the Rook for the Knight and saved the Queen.
	2 comments l-d-j (1747) on 22-Aug-12: Wait.. 19...Kg8?? allows the famous, but very nice smoothered mate trick: 20.Nh6+! (double check, king has to move) 20...Kh8 21.Qg8+! Rxg8 22.Nf7#. bwaa (1771) on 22-Aug-12: Indeed, as l-d-j says there's a very pretty mating pattern to be had from this position.


20. Nxd8+ Kh8 21. Nf7+ Kg8 22. Bxh7+	Risky move, I was not sure whether it had played out correctly in my head.
	1 comment l-d-j (1747) on 22-Aug-12: 22.Nh6+ still mates, but the truth is: everything wins here. But good on you for opening the king's position with such a sacrifice even if you're not sure if you can get a forced mate or not.


22... Kxh7 23. Nf3g5+ Kg8	Only move. The alternative 25... Bxg5 leads to 26. Nxg5+ Kh8 27. Qg6 followed by 28. Qh7#



24. Qg6 Rae8	Blunder: 24... Rae8 25. Qh7#. Moving the Rook from f8: also a bad move: 25. Qh7+ Kf8 26. Qh8#. Best (only) move: 24... Bxg5 25. Nxg5, then 25... Re8 or 25... Rd8 (all other moves either lose the game with 26. Qh7#, or lose a Rook with 26. Qh7+ Kg8 27. Qh8+)
	1 comment l-d-j (1747) on 22-Aug-12: Why not 24...Bxg5 25.Nxg5 Rfb8 or 25...Rfc8?


25. Qh7#
	1 comment l-d-j (1747) on 22-Aug-12: Although the resistance was not amazingly strong, White did show his attacking skill. Good game.

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ANNOTATED GAME