Black to move. How should black proceed?
Source: ChessToday.net
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Black to move. How should black proceed?
Source: ChessToday.net
… Nd4! Discovered attack on the unprotected white queen. White must exchange since the queen has nowhere else to go. Qh4 fails painfully to Nxf3+. Qe7 loses also to Nxf3+ with white ending losing the rook on e1 for free.
Qxb6 Nxf3+
the white king can’t go on g2 because of Nxe1+
Kg1 axb6 with white a whole knnight behind, his rook under attack and a generally hopeless position.
1…Nd4. If 2. Qxb6 Nxf3+ 3. Kg2 Nxe1+, otherwise the Queen is attacked and White can’t move the queen and defend the f3 knight at the same time.
1. … Nd4 threatening Qxf6
2. Qxb6 Nxf3+
3. Kg2 Nxe1+
4. Rxe1 axb6
Nd4
1….Nd4! 2.Qxb6 Nxf3+ 3.Kh1 axb6
Kamalakanta
Kd4!
1. … Nd4
2. Qxb6 Nxf3+
3. Kh1 axb6
Took me while to see how Nd4 wins: it opens a deadly double attack. The key is the unprotected queen at f6 and the tenuously protected knight at f3 along with the rook/king combo waiting to be forked from f3. The reason I had such difficulty seeing that it worked has to do with white’s 3rd move below- I couldn’t see the second knight check at first:
1. …..Nd4
2. Qb6
What else? The white queen cannot move to safely keep protection on the f3 knight, and the knight cannot move to protect the queen. Continuing:
2. …..Nf3 (with check being key)
3. Kh1
Another key, and the part I initially overlooked when I was studying the problem- 3.Kg2 attacking the knight won’t regain the piece since black will capture at e1 with check once again, and then recapture at b6. Continuing:
3. …..ab6 (this or lose)
But black has won a knight and still has a strong attack going on a2 and eventually e4 after the f3 knight retreats to g5.
1….Nd4 2. QxQ (Other options cannot work) Nf3+ 3. Kh1 (Kg2 is worse. 3….Nxe1+) 3….axQ. White is backward in material.-+
Nd4 does give black a temporary advantage, but white can whittle away that advantage to almost nothing in every line I’ve tried, so black should resign. For example:
1…. Nd4
2. Qxb6 Nxf3+
3. Kh1 axb6
4. Re3 Ng5
5. a3 Ngxe4
6. Kg2 Rad8
7. Rde1 f5
8. R3e2 Nd3
9. Rb1 Kg7
10. Kg1 Ndc5
11. Bg2 Rd2
12. Ree1 Nd3
13. Re3 Nexf2
14. Bf1 Rd1
15. Rxd1 Nxd1
16. Rxd3 cxd3
17. Bxd3 Nxb2
18. Bxb5 Ra8
19. a4 Nxa4
20. Bc6 Ra5
21. c4 Nc3
22. Bg2 Rc5
23. Bf1 Ne4
24. g4 Nd6
25. gxf5 gxf5
26. Kf2 Kf6
27. Kg3 Nxc4
28. Bxc4 Rxc4 {White resigns!!}
However, if white plays 5. Rd5, then black has a lot of trouble maintaining his advantage:
5. Rd5 Ngxe4
6. Re2 Rxa2
7. Rxe5 Ra1
8. Kg2 f5
9. Rd5 Kg7
10. h4 Rb1
11. h5 gxh5
12. Rc2 f4
13. gxf4 Rxf4
14. f3 Ng5
15. Be2 Nce6
16. Rd1 Rxd1
17. Bxd1 {after which the white bishop proves extremely pesky and black has trouble defending his queen side pawn structure while trying to mount any kind of attack. Black technically still has a decisive advantage at this point, but it is very fragile and perhaps fatally flawed.}
If anyone has found a solid, defensible line from move 5. to mate for white, I’d love to see it.