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A Beautiful move!
Well, Rxf7 jumps out to me immediately since it threatens Rxf8#. Of course, black can protect f8 by moving the knight, moving bishop, or black can capture at f7. However, I think all the defenses fail:
1. Rf7 Kf7 (Qd4 2.Rf8#)
2. Qf4 Ke8 (Kg8 3.Qf8#)
3. Qf8 Kd7
4. Bb5!
Probably the hardest move to find in all these variations (was for me). I had initially planned Qe7+ here, but after Kc6, I could never find a way to corral the king again. Then I sort stumbled into the deflection of black’s queen from covering d6:
4. …..Qb5
Or [4. …Kc7 5.Qe7 Bd7 6.Qd7#]; or [4. …Qc6 5.Qe7#]. Continuing:
5. Qd6 Ke8
6. Qe7#
Or, at move 1:
1. Rf7 Nd7
2. Qg4 g5 (f7 3.Qg6 Kg8 4.Qe8+-)
3. hg6
Probably missing something better here, but nothing really jumps out at me as being better. White can double up on f8 with Qf3 and win pretty easy, too, I suppose. Continuing:
3. …..Ba6 (Ne5 4.Rf8 Kg7 5.Qf4)
4. Qf4 and this is just overwhelming attack for white.
Or, at move 1:
1. Rf7 Ba6
2. Qb6 wins easy.
1.Qxb6 Rxb6
2.Ra8 Rc6
3.Bb5 Rc3
4.Bxf8 Kxf8
5.Ba6
White wins a piece.
Rxf7 Kxf7 Qf4+ Ke8 Qxf8+ Kd7 Bb5+ Qxb5 Qd6+ Ke8 Qe7#
Rxf7 Kxf7 Qf4+ Ke8 Qxf8+ Kd7 Bb5+ Kc7 Qe7+ Bd7 Qxd7#
Rxf7 Kxf7 Qf4+ Kg8 Qxf8#
Rxf7 Qxd5 Rxf8#
Rxf7 Bd7 Qxb6 +-
1. Qxb6 Rxb6, 2. Ra8 Rc6, 3. Bb5 Rc3, 4. Bxf8 Kxf8, 5. Bd7 ….. Black loses a piece.
Rxf7 Kxf7 (forced)
followed by Qf4+ is leading to mate
1. Rxf7! Kxf7 (Qxd4 loses to Rxf8#)
2. Qf4+ Ke8
3. Qxf8+ Kd7
4. Bb5+! Qxb5 (Kc7 losed to Qe7+)
5. Qd6+ Ke8
6. Qe7# mate
Rxf7 wins…
Brilliant indeed!
1. Rxf7+!! (threatening Rxf8 checkmate)
1. … Kxf7
2. Qf4+ Ke8
(If Kg8, Qxf8+ checkmate)
3. Qxf8+ Kd7
4. Bb5+ Qxb5
(If Kc7 Qe7+ and checkmate in 1)
5. Qd6+ Kd8/Ke8
6. Qe7+ checkmate
If,
1. … g5
2. Rxf8+ Kg7
3. Qxb6 Rxb6
4. Rxc8 1-0
If,
1. … Ba6/Be7
2. Qxb6 1-0
(If Rxb6, Rxf8+ checkmate)
If,
1. … Qd8
2. Rxf8+ Qxf8
3. Bxf8 Kxf8
4. Qc5+ 1-0
1. Rxf7 Kxf7
1. … Qxd4 2. Rxf8#
1. … Bd7 2. Rxf8+ Rxf8 3. Qxb6 +-
2. Qf4+ Ke8
2. … Kg8 3. Qxf8#
3. Qxf8+ Kd7
4. Bb5+!!
needed some time to find this
4. … Qxb5
5. Qd6+ Ke8
6. Qe7#
My first thought here was:
Hmm, I wonder, can white let Q remain hanging on d4 and yet avoid it to be taken?
This lead me to the idea:
1. Rxf7
Threats Rxf8# if Qxd4.
1. … Kxf7 (letting R remain on f7 playing Qd8 or Bd7 looks bad for black)
Since now Qf4 seems to let king escape via white fields, I have a certain feeling for Qa4, but this is difficult, I haven’t figured it out yet…
New detection, I think I have got a good bit further now:
1. Rxf7! Kxf7
2. Bg6+! Kg8 (only legal move)
4. Qf4!
Threats both Qf7# and Qf8#! Black cant stop both.
Black must rather try:
1. … Ba6 (Qd8 Rxf8+ white gains Q for R)
2. Qf4!
Reinforcing the threat on f7, and preventing Kxf7.
2. … Qd8
3. Rxf8+ Qxf8
3. Bxf8 Bxd3
White up with Q for R.
Hmm…
I thought of
1. Rxf7
Now, the White Queen is hanging, but cannot be taken. If 1. .. Qxd4 2. Rxf8 is mate, because the Bd3 guards the h7 square.
Hence, after Rxf7, Black must take the Rook: 1. .. Kxf7.
Now what?
2. Bg6+? obviously fails to Nxg6,
hence, the solution must be
2. Qf4+ Kg8 (only move)
3. Qf8#
So… Does Black has an alternative for the first move? Neither taking Queen nor Rook?
The move 1. .. Qb1+ is sheer desperation (and it probably doesn’t help either: Bxb1 (Rxb1+, Kg2) or simply Kg2 are possible and all threats remain).
So, 1. Rxf7 indeed wins the game for White. Beautiful move!
1.Rxf7
if 1…Qxd4 2.Rxf8++
if 1…kxf7 2.Qf4+(2…ke7 3.Qf8++) ke8 3.Qxf8+ kd7 4.Bb5+ (4…kc7 5.Qe7+ Bd7 6.#) Qxb5 5.Qd6+ ke8 6.Qxe7++
if 1…Nd7 2.Qg4(threatning mate) kxf7 3.Qg6+ kg8 4.Qe8++
pht, I left a comment for at
http://www.blogger.com/comment.g?blogID=13118012&postID=4104075556741555695