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1. Qxg7+ Kxg7
2. Rg3+ Kh8
3. Rxf7 Rxf7 (threatening Rxf8# and Rh7#)
4. Rg8#
2. … Rg4
3. Rxg4+ Qxg4
4. hxg4 +-
Qxg7+ Kxg7
Rg3+ Kh8
Rxf7 Rxf7
Rg8++
i understand that a mate can be prevented with black moving Rg4. I didn’t want to do that because i like showing the mating sequence and the power of Rxf7. This move allows white to mate on either g8 or h7. A rook and knight combination is a powerful force to be reckoned . just like my bengals will be this year with a power front four and secondary.
1.Qg7+! Kg7 2.Rg3+ Kh8 3. Rcf7 winning. If 2. … Rg4 3.Rg4+ Qg4 4.hg4 Ra8 5.Rf7 and mate. 1-0.
1. Qxg7+ Kxg7
2. Rg3+ (a) Kh8
3. Rxf7 and mate next move
2. … (b) Rg4
3. Rxg4 Qxg4
4. hxg4 and White is a bishop up and will grab the passed a pawn.
Mark
I spent a while analyzing the queen sacrifice 1. Qxg7+, with the intention of continuing as:
1. Qxg7+ Kxg7
2. Rg3+ Kh8
3. Rxf7 and to avoid checkmate, black has to give up a lot of material:
3… Rg4
4. Rxf8+ Kg7
5. Rg8+ Kf7
6. R3xg4 Qxg4 (6… Ke7? 7. R4g7#)
7. Rxg4
But no, this is based on a fallacious analysis, because black can do:
2… Rg4
3. Rxg4+ Qxg4
4. Nxg4
which is still a good position for white, though.
There is also:
1. Rd3
The threat is Rxf7 followed by checkmate. Black doesn’t have a lot of room to maneuver, the best I think is:
1… Rb3
2. Rxd1 Rxg3
3. Kxg3
which is also good. No time for a detailed analysis, so I have to leave both these options here for the experts to deal with.
1.Qxg7 + Kxg7
2.Rg3+ Kh8
3.Rxf7
Chess is a blessing for insomniacs like myself.
Both 1. Qxg7+ and 1. Rd3 are winning moves. Neither of them is really stronger than the other, but 1. Rd3 has the merit of having fewer and shorter
variations to have to calculate. OTB it would save a lot of time and stress if one found this
continuation first. But of course, that wouldn’t happen. Not to me, at any rate.
Probably everyone would think of 1. Qxg7+ first. It has the merit of being spectacular, and having some highly interesting mates in some variations. I’ll have to see if I can find the game score to see which of these 1st-move-variants was played by Rublevsky.
Taking the simpler approach first:
1. Rd3 Rb3
(1. .. Qe2 2. Rxf7 Rxf7 (2. .. Rg8 3. Rd8) 3. Rd8+ Rf8 4. Rxf8+ Bxf8 5. Qg8#)
2. Rxd1 Rxg3 3. Kxg3
Things are real simple if after 1. Qxg7+ Kxg7 2. Rg3+ Black plays 2. .. Kh8?
That is punished quickly by 3. Rxf7 and White will checkmate Black with either Rh7#, Rxf8#, or Rg8#.
Things are a little less simple after 1. Qxg7+ Kxg7 2. Rg3+ if Black plays 2. .. Rg4. That could continue with:
2. .. Rg4 3. Nxg4 [Threat: Ne3+] Kh8
(3. .. Qb3 4. Rxb3 axb3 5. Rb7)
4. Nf6 Qd8
(4. .. Qb3 5. Rxb3 axb3 6. Rb7)
5. Rc4 Rg8
(5. .. a3 6. Rh4 Qd2 7. f4)
6. Rxg8+ Qxg8 7. Nxg8 Kxg8 8. Rxa4
There probably aren’t too many players of the Black pieces that, after 1. Qxg7+ Kxg7 2. Rg3+, would return the favor, and counter with a queen sacrifice of their own, playing 2. .. Qg4!
OTB, I certainly wouldn’t be one of them, unless I were feeling
particularly jocular that evening. Things can get really interesting after that SWAG, though:
2. .. Qg4!? 3. Nxg4 re-establishes all the old threats, but Black has some additional resources here.
3. .. h5
(3. .. Rb3 4. Rxb3 axb3 5. Rb7)
(3. .. Kg6 4. Rf3 h5 5. Rf6+ Kg5 6. Nh6 Rf4 7. Nxf7+ Rxf7 8. Rcxf7 Rxf6 9. Rxf6 h4 (9. .. a3 10. f4+ Kh4 11. g3#) 10. f4+ Kh5 11. f5 exf5 (11. .. a3 12. fxe6 a2 13. e7 a1=Q 14. e8=Q+ Kg5 15. Qg6#) 12. Rxf5+ Kg6 13. Rf1 a3 14. e6 a2 15. e7 a1=Q 16. e8=Q+ Kg7 17. Rf7+ Kh6 18. Qe6+ Kg5 19. Rf5#)
4. Nf6+ Kh6 5. Rf3 Rd4 6. Nd7 Ra8 7. Rxf7 a3
(7. .. Rxd7 8. Rcxd7 Rg8 (8. .. Rh8 9. Rf6+ Kg5 10. Rg7+ Kh4 11. g3#) 9. h4 a3 10. f4 a2 11. Rh7+ Kg6 12. g4 hxg4 13. Rdf7 g3+ 14. Kxg3 Rg7 15. Rhxg7+ Kh6 16. Rh7+ Kg6 17. h5#)
8. Rf6+ Kg5 9. Nf8 a2 10. Rg7+ Kh4 11. g3#
1. Rd3, Qb1
2. Rd8, Rxd8
3. Rxf7
gives plenty of attack angles.
1. Qxg7+ Kg7
2. Rg3+ Kh8
3. Rxf7 Rxf7
4. Rg8#
No real defense as any steps to guard the back rank by moving the black R on f8 allows white to mate by Rh7.
Night to e8 and the game finishes at the most in 3 steps (I suppose)
Qxg7+ Kxg7
Rxf7 & black does appear to be able to avoid the mates at f8, g8 & h7.
1 Qg7+! Kxg7
2 Rg3+ Kh8
3 Rxf7!
1-0
QxB