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1….Rf2
2. Rxf2 Qxc1+
3.Rfi Rxh2+
4.Kxh2 Qh6+
5.Kg2 Qh3+
6.Kf3 Bg4+
1.. Bf2 0-1 (if Rxf2 then ..Qxc1)
1…Bf2! threatens mate
I)2.h4 Rxh4+ 3.gxh4 Qxh4+ 4.Kg2 Qg3+ 5.Kh1 Qh3 mate !
II)2.Rxf2 Rxh2+ even stronger
3.Rxh2 Qxc1+ 4.Kg2 Qg1 mate !
1 … Bf2!
1 … Rf2 accomplishes the same basic thing. Black interferes with White’s defense of h2
2 Rxf2 Qxc1+
2 … Rxf2 works out about the same.
3 Rf1
And not 3 Kh2 Bh3#
3 … Rxf1+
4 Qf1 Qxf1+
5 Bxf1 dxe4
Black is up the Exchange.
The correct sequence is:
1. Rf1 Bf2
2. Rxf2 Rxf2
3. Qxf2 Qxc1+
4. Qf1 Qd2
5. Qe2 Qxe2
6. Bxe2
Bg4 should win for Blacklt
This is pretty! I spent 45 minutes trying to work out lines starting with moves like Be5, Rh2, Bh3, Rf1, de5 and so forth. One of the problems I kept running into over and over was the capture at f8 by white. For example:
1. …..Be5
2. Rf8 Kf8 (forced)
3. Rf1 Kg8 (K to e-file pins Be5)
4. ed5
And, now, the black e5 bishop is still pinned indirectly by a threat:
4. …..Bg3 (the idea behind Be5)
5. Qe8 with mate to follow. The point being that allowing white to take at f8 with check gave white a tempo to liquidate one pair of rooks while bringing his other rook to f1 with check where it was no longer attacked by the black queen. Once I realized the major problem in coordination for black, the solution was like a thunderbolt- one of those Eureka! moments when you just know the solution without even working out all the details.
1. …..Rf2!!
Blocks, for the moment, the protection on h2 and attacks the white queen. With the twin threats, white must take at f2 with his rook since captures with the queen at f2 or h5 are more hopeless:
2. Rf2 Bf2
And, once again, black has cut off the protection on h2, but, in addition, the rook at c1 is now unprotected, so black again has a double threat that cannot both be parried by any move:
3. Qf2
Here, 3.h4 will lead to mate starting with 3. …Rh4 as the queen and two bishops is more than sufficient to net the white king (3.h4 Rh4 4.gh4 Qh4 5.Kg2 Qg3 6.Kf1 Bh3#). Continuing:
3. …..Qc1
And white has won an exchange. The question here is, how easy is this to bring home for the win? White can deal with the check by blocking with the queen at g1 or f1, blocking with the bishop, or playing Kg2. The last of these looks horrible in that black can then play Bh3+ whipping the white king out into the open at f3 where de4 occurs with check. Of the blocking moves, Bf1 looks risky due to the threat, again, of Bh3 attacking the pinned piece. To decide between Qg1 and Qf1, I was forced to examine them a bit closely, but eventually felt Qf1 was superior:
4. Qg1 Qd2
Here, Qg1 for black doesn’t look as good due to the fact that it is the king that retakes rather than the bishop, so black will not retain a passed e-pawn while capturing at e4. Continuing:
5. Bf1
Here, the other two alternatives are worse: (5.Bb1 Bg4! with mate to follow; or 5.Nc5 Bg4 6.Bf1 d4! with d3 to follow and an overwhelming edge to black). Continuing:
5. …..Bg4
Still better than de4 I think since it keeps the pressure on white:
6. Bg2
Here, ed5 is worse: (6.ed5 Re5! 7.Qg2 {7.Bg2 Re1} Qe3 and there is no answer to the threat of Bf3). Continuing:
6. …..de4
7. Be4
Nothing saves white now, anyway. Continuing:
7. …..Re5 and black will win easily. Back at move 4, white might do a bit better with
4. Qf1 Qf1
Here, Qd2 is not a threat since white can still liquidate the queens by playing Qe2 and attacking both the rook and the queen. Continuing:
5. Bf1 de4
6. Nc3
Anything better than getting the knight off the edge of the board?
6. …..e3
7. Bc4 Kg7
8. Kg2 Rf5 (eying Rf2+)
9. Nd1
And, black clearly has the upper hand, but white’s pawns are better than black’s, white’s bishop is better than black’s, so black has his work cut out for him to finish off a win.
Also, I think black wins the same way with 1. …..Bf2, but I didn’t do a complete analysis beyond move 2, but it looked like a simple transposition of moves.
Bf2
1…Rf2+ looks interesting.
From Spain
1)…Bf2 win
Greetings from Spain
I don’t see what white does after Rf3.
1…Bf2
If 2. R:f2 Q:c1+
If 2. Q:f2 R:f2
If 2. other R:h2#