Collier – Coopersmith (USA 1978), presented by Andreas
Black to move. How should Black proceed?
5rk1/ppp2r2/3P2p1/4pq2/2P1N1n1/5nPB/PP2QPK1/R4R2 b – – 0 1
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1. … Ne3+
2. fxe3 (or Qxe3) QxB+ (If 2. Kh1 QxB++)
3. KxQ Rh7+ (If 3. Kf2 Qh2++)
4. Kg4 Nh2+
5. Kg5 Kg7
6. f4 Rh5+ (If 6. Qg4 Rf5+ 7. QxR Rh5++)
7. gxh5 Rf5++
To edit my comment, for white’s sixth move I meant to write g4, not f4.
Sean, you got the first move right, but didn’t follow through well on your analysis.
After:
1. … Ne3+,
2. fxe3 Qxh3+
3. Kxh3 Rh7+
4. Kg4 Nh2+, White simply captures it with 5. Qxh2!
The correct line is:
1. … Ne3+
2. fxe3 Qxe4!!!
with the threat of 3. … Nd4+ and picking up the Q on e2.
If 3. Rxf3 then 3. … Rxf3, and black is now threatening 4. … Rxe3+ and again picking up the Q on e2.
sweet!
drcheck,
you are right, but if 2…Qxe3 then it follows something like my line. There seems to be an error in my line though because if 6. f4, Rh5+ 7. gxh5, Rf5+ is not mate. The king has an escape square at h4. And if you try to check on the other side first (6. f4, Rf5+ 7. gxf5, Rh5+ 8. QxR, PxQ), again no checkmate.
Never mind. My line does work if 2. Qxe3. Of course, the white queen has now moved and can’t capture the rook at h5.
1. … Ne3+
2. Qxe3 QxB+ (If 2. Kh1 QxB++)
3. KxQ Rh7+ (If 3. Kf2 Qh2++)
4. Kg4 Nh2+
5. Kg5 Kg7
6. f4 Rf5+
7. gxh5 Rh5++
Surprisingly simple one.
The silent move Kg7 was the only thing a little hard to find but the rest was easy as it was mostly forced with only small variations that are easy to react to (as fxe3 2. Qxe4).
And having found this king drive o far (of course in a game you wouldn’t be sure there must be something and perhaps wouldn’t have calculated so far) Kg7 was findable, too.
Very nice and easy puzzle.
I must be on drugs. I’m not following the lines posted. Maybe my board isn’t set up correctly.
1. … Ne3+
2. Qxe3 Qxh3+
3. Kxh3 Rh7+
4. Kg4 Nh2+
5. Kg5 Kg7
Fine so far, but isn’t 6. f4 Rf5 mate? Where was the g pawn that makes gxh5 a move here? Is that supposed to be 6. g4?
What is Black to do with White’s 6. Nf6?
6. Nf6 Rxf6
7. g4 Nf3+
8. Qxf3 Rxf3
9. dxc7 Rh8
10. Rad1 Rc8
11. Rd7+ Rf7
12. Rxf7+ Kxf7
13. Rh1
I don’t think Black is doing so well.
I could be hallucinating. Help!
”What is Black to do with White’s 6. Nf6?”
6.Nf6 Rxf6
7.g4 Rf5+ (NOT …Nf3+)
8.gxf5 Rh5++
Yes, of course. Very good. Thanks. My brain hurts.
1. … Ne3+
2. Qxe3 Qxh3+
3. Kxh3 Rh7+
4. Kg4 Nh2+
5. Kg5 Kg7
[snip]
What is Black to do with White’s 6. Nf6?
6. Nf6 Rxf6
7. g4 Nf3+
7…Rf5+ 8.gxf5 Rh5#.
The toughest defense for White seems to be:
1…Ne3+
2.fxe3 Qxe4 (good spot, drcheck)
3.dxc7 Nd4+
4.Kh2 Nxe2
5.Rxf7 Kxf7
6.Rf1+ Kg7
7.Rxf8 Qxe3
… but as long as Black doesn’t do anything silly (like 8.Rg8+ Kxg8?? 9.c8=Q+) he’ll win.
”1…Ne3+
2.fxe3 Qxe4 (good spot, drcheck)
3.dxc7 Nd4+
4.Kh2 Nxe2
5.Rxf7 Kxf7
6.Rf1+ Kg7
7.Rxf8 Qxe3”
6.Rf1 Nf4 seems to win also.
7.exf4 Qc2+ and e4