Black to move. How should Black proceed?
r7/6k1/1P1p2p1/3Ppn2/3q4/1R6/6PP/4QB1K b – – 0 37
Karpov, Anatoly – Taimanov, Mark (Leningrad, 1977)
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1 … Ng3+
2 Qxg3 Ra1 (if 2 hg Rh8++)
and mate follows
1. … Ra1
2. Qé2 Qxd5
And the white rook must leave de defence of the b pawn because the thread Ne3.
Luc
1… Ra1
2.Rb1 ng3+
3.hg Ra8!!
1…Ra1! 2. Qe2 (2. Rb1 Ng3+! 3. Qxg3 (3. hxg3 Ra8 threatens Rh8 mate) Rxb1 ++) 2…Qc5!
I would play Ra1:
1. …..Ra1
2. Qe2
Here, white loses with Rb1: [2.Rb1 Ng3 3.hg3 Ra8!-+]. Continuing:
2. …..Qd5
And here black is threatening Nd4 followed by e4 if white tries to maintain control of the a6/f1 diagonal with Qd3, and is threatening Nd4 followed by Qc4/b5 if white chooses 4.Qf2 in other lines. I don’t really see what white can do with the rook here- it is either Rd3 or Rf3:
3. Rd3 Nd4
4. Rd4
If white tries 4.Qf2, white just pins the rook to f1 with Qc4. Continuing:
4. …..Qd4
5. b7 Qb4
And the b-pawn falls, too. Black should win fairly easily from here- he can even just exchange all the pieces at f1 and win with the connected passers.
At move 4, white can try Rf3:
4. Rf3 Nd4
5. Qb2 Ra2!
6. Qc3 Nf3 (or Rc2)
7. gf3 Rf2
8. Qc7 Kh6
9. Qc1 g5
With a fairly easy win.
1 …Ra1 2.Qe2 Ne3