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Rxf6+
gxf6
Qxf6+
Kg8
Re4 with the threat of Rg4 mate
1. Rxf6+
1. … gxf6
2. Qxf6 Kg8 (to protect Rh8)
3. Re1, threatening Qf8#
3. … Qg7
4. Qd8+ Qf8
5. Qxf8#
3. … Qd8 or Bd7
4. Qf7#
1. Rxf6+, gxf6 (1. – , Ke7 2. Rfxe6+, Bxe6 3. Bf5, something like that) 2. Qxf6+, Kg8 (3. – , e8 4. Qxh8+, Kd7 5. Qxh7+ and so on) 3. Rf1, Qg7 4. Qd8+, Qf8 5. Qxf8#
Just checked my solution with Fritz 13 (infinite analysis). Here’s what the machine has to say about this position:
1. Rxf6+ gxf6 2. Qxf6+ Ke8 3. Qxh8+ Kd7 4. Rf1 +-(10.36/24)
And the continuation looks as follows:
4. Rf1 Qc5+ 5. Kh1 Qe7 6. c5 e5 7. Bc4 Kc6 8. Rf7 Be6 9. Qxe5 Bxf7 10. Qxe7 Bxc4 11. Qd6+ Kb5 12. Qd7 Kxc5 13. b4+ Kxb4 14. Qxb7+ ka3 15. Qxa8 a6 16. Qc6 Kb4 17. Kg1 Bxa2
+- (10.36) Depth: 24/56 00:00:39 286mN
I like:
1. Rxf6+ gxf6
2. Qxf6+ Kg8 (Ke8 Qxh8+ also is ugly for black)
3. Rf1!!
threats Qf8#.
3. … Qd8/Bd7
4. Qf7#
But here black played too materialistic, though, 1. … gxf6 must get a huge questionmark.
Conclusion is that 1. Rxf6+
gains a pawn.
But if this is enough to win the game, I don’t see it right away.
1. Rxf6+ gxf6
2. Qxf6+ Kg8
3. Re5
threatening Rg5+, and the black queen has to prevent Qd8+ as well. it`s impossible to meet both threats.
greets, jan