Puzzle of the week #225

Chess Diagram: 


2 promising juniors from the 70s generation reached this position after the following moves:
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Be3 Be7 7.Nf3 O-O 8.Bd3 Bg4 9.h3 Bxf3 10.gxf3 Nd7 11.Rg1 Qc7 12.Qd2 Rfd8 13.O-O-O c5
Your tasks:
a) Name the opening;
b) Amalyse what both sides have done so far and decide what part of the game are we into now;
c) Verify if the g7-qsuare hot spot sacrifice works and put together the best line you can think of for both sides.

Total available points for this puzzle is 25. The answers will be published next week together with puzzle #226.

Puzzle #224 solution:
Capablanca - Corzo, 11th game of the match, Havana 1901. Black has a Queen for a Knight and Bishop, but nothing else. All White pieces are nicely placed and ready for a final assault. The f7-pawn is a thorn in Black's position and it forces Black to take care of it first; meantime the White pieces will attack decisively. The analysis was more or less good for all solvers, while the attack was not. Here is the correct solution:
33.Nxf5 Qxf7 34.Bxg7+ Kh7 35.Re7 ...
[If 35.Re6 ... Black is forced to give up the Queen, so probably it could resign on the spot]
35... Qxd5 36.Be5+ Kg6 37.Rg7+ Kh5 38.Ng3+ Kh4 39.Rf4+ gxf4 40.Rg4#
It is interesting to note there were no computers available at that time, making the combination so much more valuable.

Correct solutions:
Leo, James, Daniel - 12 points
Aditya - 4 points


Daniel - 204 points
James - 199 points
Leo - 146 points
Justin - 116 points
Derrick, Richard - 89 points
Jerry - 42 points
Aditya - 33 points
Alex - 7 points


The g7-square hot spot (1)