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RXC7 QXC7 RE7 and it looks like black has no defense without losing the queen and giving white a win with FXQ king X D7 and QF7 checkmate!
How about Re7 R*c1+ Kg2 Q*f6 Rf7+?
I would have loved to continue
1. Rxc7 Qxc7
2. Re7!
But here black has
2……. Qc1+
3. Kg2 Bh3+!
4. Kxh3 Qf1+
5. Kg4 h5+
6. Kg5! Bf4+!
7. Kf5 Qh3+
and i dont think that white has the advantage anymore.
Maybe, there is something else for white.
1Rxr & Re7 Wins
Doesn’t the simple 1. Rxc7 Qxc7 2. Re7 win?
It’s hard to find anything better than:
1. Rxc7 Qxc7
2. Re7! Qxe7 (otherwise Qf7#)
3. fxe7 Kxe7
4. Qf7+ Kd8
5. Qxg7 Re8
with very unbalanced material.
White has Q+B+6p, black has R+2B+N+3p.
A bit unclear. I guess white should continue attacking the king:
6. Qf6+
Re7 & RxB
Here i see
1. Rxc7 threatening mate
.. Qxc7
2. Re7 .. Qc1+
3. Kg2 .. Bb7
4. Rf7+ followed by Qxb7
Rc7Qc7 Re7
Guess I am not the only one who came to Rc7 first, but I see things pretty much the way Haridaran sees that line- after 2.Re7, black has Qc1 and Bh3 to get the draw at a minimum.
Of the other alternatives, an interesting one is Rc6:
1. Rc6 gf6 (Rd7 2.Re7 # in 5)
Only 1. …Bb7 looks as good: [1. …Bb7 2.Rd6! Bd5 3.Rd8 Kf7 4.Bd5! Kf6 5.Re6! Kf5 6.Rh8 Nh8 7.Ra6 and white is going to be up at least 3 pawns.] Continuing:
2. Rd6 Rd7 (what else?)
3. Qf7 Rf7
4. Rd8 Kg7
5. Rh8 Nh8
6. Bf7 Nf7
7. Rc1 and I am not sure who stands better here, but I would rather be white since black is going to find it difficult to protect the queenside pawns quickly enough, but the lines are too complex for me to be sure of this.
1.Re7 does the trick!
1…. Rxc1
2.Kg2 and white wins
1…. Rxe7
2.fxe7 Qxe7
3.Rxc8 +/-
Jean Claude,
Probably not a win for white. Might even lose:
1. Re7 Rc1!
2. Kg2 Nf4+!
3. gf4
Nothing else can hold here. Continuing:
3. …..Qe7
4. fe7 Ke7
5. Qf7 Kd8
6. Qg7 Rf8
And this is quite unclear to me. Black has two rooks for the queen and three pawns, but white’s extra pawns are terribly weak. I would rather play black here.
For the curious, 2. …Nf4+ saves the rook at c1 in a key line by preventing Qg5+ double attack, and isn’t an easy move to find.
Looks like Hariharan’s analysis is right: White doesn’t have a forced win by 1. Rxc7 Qxc7 2. Re7. So, the best continuation for White is 1. Rc6! gxf6 2. Rxd6, winning back the piece and remaining a few pawns up.
Yancey.
You missed the power of the white colored bishop!
not 5.Qf7, but
5.Qg5+! and black loses a rook in all variants.
Regards
Jean-Claude
But is it really so that
1. Rxc7 Qxc7
2. Re7 Qc1+
3. Kg2 Bh3+
gives white eternal check?
If so, it should be demonstrated.
Cause if it isn’t eternal check, white would probably mate on first move where black doesn’t give check.
4. Kxh3 Qf1+
5. Kg4 h5+
6. Kg5 Bf4+(?)
Why can’t white now continue with:
7. Kxg6! Qb1+
8. Re4! Rh6+
9. Kf5
No more checks.
9. … Qxe4 (what else?)
10. Qxe4
white wins.
Jean Claude,
You are missing the power of the knight sacrifice for black that prevents your Qg5 double attack at c1. Again, but with a more thorough think on your line than I had done yesterday:
1. Re7? Rc1!
2. Kg2 Nf4!
Yesterday, I thought this was the only move to hold for black, but I now believe he can also play Bh3 in this line, or even an immediate Qxe7 that is analogous to what you think should win: [2. …Qe7?! 3.fe7 Ke7 4.Qg5 Kd7 5.Qc1 Bb7 and black still has a rook, knight, and bishop for a queen and two pawns- a fair trade in this position]. Continuing from Nf4 above:
3. gf4
Forced. Continuing:
3. …..Qe7 (only move to hold)
4. fe7 Ke7
And, now, in this position, 5.Qg5 doesn’t attack the rook at c1 (the white pawn at f4 blocks this attack), though I now think Qg5 is the right move rather than Qf7, but I doubt the difference is all that great- black still loses the g-pawn in either line. Continuing:
5. Qg5 Ke8 (Kf8 6.Qd8#; Kd7 6.Qg7)
6. Qg7 Rf8
And what is the winning line for white here? He can take at h7:
7. Qh7 Rf4!
8. Qh6 Ke7 (Kd7 9.Be6!)
Here, black might just play Bb7, too: [8. …Bb7 9.d5! Kd7 10.h4 Bc8! and the black king is safe, and all his pieces are eyeing white’s king]. In any case, black has some work to do to get the rooks connected up and get his king protected, but he should be ahead here.
And, Susan, these verification words are almost impossible to read half the time.
pht, here is the line you asked about:
1. Rc7 Qc7
2. Re7 Qc1
3. Kg2 Bh3
4. Kh3 Qf1
5. Kg4 h5
6. Kg5 Bf4!
The draw can be secured as follows:
7. Kf5!
Here, white loses with 7.Kg6??; [7.Kg6?? Rh6 8.Kf5 Rf6 9.Ke4 Qe2#]. Also, white loses with gf4: [7.gf4?? Qg1 8.Kf5 Qg4 9.Ke4 Qe2 10.Kf5 Nh4 11.Kg5 Qg4#]. Continuing:
7. …..Ne7 (with check, now)
I looked for quite a while at this the other day, and this is the best I can find for black. Still not 100% sure it is the best move, but the best one I can find. Continuing:
8. fe7 Ke7
So, you tell us- can white win from here? In this position, black is threatening Rf8+, g6+, and Qb1+, all of which look drawish at best for white, and the major piece checks look downright ugly for white, so I don’t know that he has time to take the bishop on f4 at move 9. We are left with the queen checks at move 9 to win, but I don’t see how white can mate black with just the queen and bishop in this position:
9. Qe6 Kd8
10.Qd5 Kc8
Purely for purposes of demonstration that black doesn’t need the rook to draw:
11.Qa8 Kc7 (Bb8 draws too)
12.Qh8 Bh6! with twin threats of Qd3+ and Qf2+. This is surely a draw at best for white. If you can find a win after move 8 for white, I would be interested to see it. I don’t right now.
Of cource, 7. Kxg6?? wasn’t possible:-)
Even though I never pick up my chessboard when looking at puzzles, because I like the blindfold training, and this generates many errors, it was still very strange how I missed 8. … Rxf6.
Either a white pawn suddenly became black, or the just grabbed knight was still on g6, i still need more blindfold training:-)