There are some really nice zugzwang motifs inside this chess problem in both the main line and the variations.
5r1k/2p3pP/3p1P2/3PP3/p7/P2K4/6P1/2B5 w - - 0 1
1.Bh6 Kxh72.e6 Kg63.Bxg7 Rb84.Kc4 Rb35.g4 Rxa36.g5 Re37.Bh6 a38.f7 Rf39.f8=Q Rxf810.Bxf8 a211.e7 Kf712.e8=Q+ Kxe813.Bg7It's a winning position for white.
Alena, what about 6.....Rf3
Yancey, I couldn't find a win for white after your 6...Rf3.I will try to find a mistake before the sixth move.
The issues are very subtle in this problem, Alena. As I wrote in the introduction- the theme is zugzwang. Because of the threat of the white pawns, black must try to generate counterplay with his a-pawn while, at the same time getting the rook into position behind the white pawns on the kingside. To foil this, white has to choose his moves in right order so that black is forced to make his moves at the wrong time.
In other words, why was 6.....Rf3 possible, and why did it fail? You have probably already determined that the problem for white in that line is that white can't escape the queen checks in the key line after 6....Rf3, right?
Yes, you are right, I did find out that white can't escape the queen checks after 6....Rf3
Have you made any progress, Alena?
Yancey, the problem slipped from my mind. Now you reminded me about it.
1.Bh6 Kxh72.Bxg7 Rb83.e6 Rb3+4.Kd4 Kg65.Kc4 Rb16.g4 Rb37.g5 Rxa38.Bh6 Rf39.e7 Re310.f7 Kxf711.g6+ Kxe712.Bxe3 Kf613.Kb4 Kxg614.Kxa4 Kf515.Kb5 Ke416.Kc6 Ke517.Bg5 Ke418.Bd8 Ke519.Bxc7 Ke420.Kxd6 Kd421.Ke6It's a winning position for white.
And why does 4.Kd4 win and 4.Kc4 only draw?
The king controls the important square e3. If the king moves onto c4 instead of d4 it will lose a critical tempo.
Is that really true, Alena? Compare the two solutions you offered- the first incorrect one, and then the second and correct one. Then consider the line you omit that is important to finish this out: 5....Rxa3.
The king can be checked (perpetual check) if it moves onto c4 and after that onto d4.
This is from an actual chess game which took place at Kolkata International Chess Open
White has a strong attack but is there a win?
This was one of the chess puzzles I created for 2017 SPFNO
2018 Summer Chess Classic is a 10-player round-robin tournament taking place from 15-23 May at STL Chess Club
This chess puzzle is from the 2017 SPFGI
This is from a real chess game of chess master Kucuksari
You should be able to spot the tactic motif in 5-10 seconds.
Precise tactic execution is required
Review of the new book by Russian Correspondence GM Nikolay Kalinichenko
what if you do 1. Qb1?? and your opponent does ..c1=Q!! then white is screwed.
For me, this is Rambo Attack Tactic [ 1) R5e8+!! Kh7 2) Qxd2! R8xd2 3) Rexa8 ~ Black resigned 1-0 ]