Today’s Challenge: Find the typical pattern and react accordingly, Black to Move:
Aron Nimzowitsch against Bjorn Nielsen in 1930
Q – Can black play 20…Bd6 with an idea of meeting Rd7 with Rad8?
A: Not at all, in the game Black played 20…Bd6 and lost very quickly. Instead the fight can be prolonged with 20…Bd8.
21. Rd7 Rad8
Now what? If you open up g-file a mating net can be created with rook and bishop.
Q: Is this necessary?
A: Yes, as the immediate 22. Qf6 can be met by Bxe5!.
22…Rxd6 23. Qf6!!
Black resigned in view of 23…gxf6 24. Rg4 Kh8 25. Bxf6#
The mating net with a rook on g file and bishop on the a1-h8 diagonal like this is called Morphy’s mate.
Reshevsky against shainswit in 1951
Q: Can black win the rook with 27…e4?
A: No, but instead black can achieve a good game with 27…Rfd8.In the game Black played 27…e4, falling into the trap set by White.
28. Rxg3! exd3
Completely unaware of White’s intentions.
29. Rxg7 Kh8 30. Rxf7+!
Removing the key defender here. This is a very important move as rook anywhere on g-file can be met by …f6.
30…Kg8 31. Rg7+
And mate in few moves.
Here is the complicated form of the same pattern:
Paulsen against Morphy in 1857 with Morphy (Black) to move
Try to work this one out on your own. I have already annotated the full game here.