| 
| 
 | 
11. Qxd3 
 | 
Qxd3?? pxd3 or even hxg4 would be better. | 
   
    | 
|   | 
| 
 | 
11... Nxf2 
 | 
Nxf2 - the N is in the heart of the defense. | 
   
    | 
|   | 
| 
 | 
12. Qe2 
 | 
Qe2 - as it was attacked. | 
   
    | 
|   | 
| 
 | 
12... Nxe4+ 
 | 
Nxe4 . Discovered check, winning the pawn and also allowing the N to move to better squares later. | 
   
    | 
|   | 
| 
 | 
13. Kh2 
 | 
Kh2. Only move. | 
   
    | 
|   | 
| 
 | 
13... Bd6+ 
 | 
Bd6 ; Qd6  was probably better, as it could then come in at g3. | 
   
    | 
|   | 
| 
 | 
14. g3 
 | 
g3 - to prevent the loss of a Q. | 
   
    | 
|   | 
| 
 | 
14... Nxg3 
 | 
Nxg3, a fork, and later a discovered check. | 
   
    | 
|   | 
| 
 | 
15. Qd3 
 | 
The Q was attacked. | 
   
    | 
|   | 
| 
 | 
15... Nxf1+ 
 | 
Nxf1  . Double check; the king must move. | 
   
    | 
|   | 
| 
 | 
16. Kh1 
 | 
Kh1. Kg2 may have been better, as it stops the Q coming in. | 
   
    | 
|   | 
| 
 | 
16... Qf2 
 | 
Qf2! Threatening mate in 1, and with a good attack. | 
   
    | 
|   | 
| 
 | 
17. Be3 
 | 
This did nothing. The best line was Qxd6, Ng3 , Qxg3, Qxg3. Black has won by this point. | 
   
    | 
|   | 
| 
 | 
17... Ng3# 
 | 
A quick end to the attack. Checkmate. | 
   
    | 
|   | 
  |