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In the initial position black is up two minor pieces and both sides have a pawn one square from promotion. They also both have a weakened king position however it is the black king that is in immediate danger and white can take advantage of this with 1.Qf6 using the pin and threatening to mate on g7.Black can throw in the spite check1...Nf2 but after 2.Kh2 he has to defend the g7 squareif 2...Qg83.Qxf5+ Kh64.Qg5+ Kh75.Qxh5#if 2...Rg83.Qxf5+ Kh8 (3...Kh6 then same mating line in previous variation)4.Qxh5+ Bh65.Qxh6#if 2... Qxc3 (or 2...Qc4) then 3.Rxg7#if 2...Qf73.Qxf7 Rg8 (3...Kh6 4.Qxg7#)4.Qxh5#There are no other ways to defend the g7 square or to check the white king so black can not avoid mate.
I am not quite sure what type of chess notation is used above. Could you clarify? Thanks!
This diagram seems to have plenty ideas, but complicated to make them work.I saw the diagram before without solving it, but now I directly spot one move that seems to undoubtedly improve on already existing white ideas:1. R1e6!Cutting off black queen's access to f7, this threatens Rxg7+ Kxg7 Qe7+ Kg8 Rg6#.If Rg8? then Rh6#.To come out of this mate threat, black will have to sack a lot of material and give white a comfortable win.
1.Rxg7+ Kxg72.Re7+ Qf73.Rxf7+ Kf84.d8=Q#Who the hell played black in this game?
Please forget my first post!1. Re6?? must be wrong since it gives black a1=Q+, Rxg2+ and Nf4+ etc., black wins.We can also forget 1. Rxg7?? because of black's resource Qf7.The correct solution has to be:1. Qf6!! Rg7 (Qf7 Rxf7 Rg7 delays by one)2. Qxf5+ Kh53. Qg5+ Kh74. Qxh5#Or:2. ... Kh83. Qxh5+ Bh64. Qxh6#I conclude this is enforced mate in 5.
Finally I notice that it should be enforced mate in 4, since:1. Qf6 Qf7?2. Qxf7! Rg83. Qxh5#where Qf7 was exactly the opposite of a "delaying Q sack".
I made mistake in previous comment.Probably I used three rooks for white.!.Qf6 Qg8 or Rg82.Qxf5+ Kh63.Qg5+ Kh74.Qh5#with 1... Rg8 as above black can play 2..... Kh8 which also fails by 3.Qxh5+ Bh64.Qxh6#
FEN-notation , very useful, i.e to paste in chess enginesgoogle it
1. Rxg7+ Kxg72. Re7+Now Black has a number of alternatives:If 2....Qf7then 3. Rxf7 winningIf 2...Kg83. Qg6+ Kf84. Qg7mateIf 2...Kf83. Qf6+If 3....Kg84. Qg7mateIf 3....Qf74. Qxf7mate
1 Rxg7+ Kxg72 Re7+ Kg8 3 Qg6+ Kf84 Qg7#
1. Rxg7+ Kxg7 2. Qe7 Qf7 3. Qg5+
Qf6 is the only move to save white- he loses with moves like Rxg7. This puzzle has been posted multiple times the last year, the last being in December.
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