#### Bruemmer,Don J (1660) - Bonzon,Roman (1720) [D04]

Illowa July 2007 Davenport, IA (1), 03.07.2007

* [Bonzon,Roman]*

**
1.d4
d5
2.Nf3
Nf6
3.e3
c5
4.b3
g6
5.Bb2
Bg7
6.Bd3
0-0
7.Nbd2
Nbd7
8.0-0
Qc7
9.c4
b6
10.Qc2
Bb7
11.a3
Rfd8
12.Rfd1
Rac8
13.Rac1
Nf8
14.Ne5
Ne6
15.Ndf3
Nd7
16.cxd5
Bxd5
17.Nxd7
Bxf3
**This messes up White's kingside protective pawns, and is the source of later trouble. I think Don was expecting me to take the knight on d7 immediately, as in: [17...Rxd7
18.e4
Bb7
19.d5
]

18.gxf3
Rxd7
19.Ba6
Rcd8
20.Bb5
Rd5
21.h4
Rh5
22.Qe4
Bf6
23.Kf1
Rxh4?
In my eagerness to implement my obvious idea I missed the killing: [23...Qh2
]

24.f4
Ng5
25.Qg2
Ne6
26.Ba1
Ng7
27.Bd3
Qb8
28.Be4
and now is the time for mass exchanges on d4.

28...cxd4
29.Bxd4
Bxd4
30.Rxd4
Rxd4
31.exd4
Rxf4
This is what I saw on move 28. What I did not see came after Don played:

32.Bb7
The threat is clearly Rc8+. I spent a good 10 minutes on this position, finally playing just about the weakest continuation. But there is a miracle save, when Black actually increases his advantange. What is it? A great tactic, that surpasses the powers of a pair of class B players.

32...Qf8??
33.Rc8
Ne8
34.Qc6
Rf6
35.Qa4
b5
36.Qxb5
Rb6
37.Qa4
Rxb7
38.Rxe8
Qxe8
39.Qxe8+
Kg7
40.b4
Rc7
41.Qb8
Rd7
42.Qe5+
f6
43.Qe3
Kf7
44.Qc3
Kf8
45.Qc8+
1-0