| A | B | C | D | E | F | G | H | ||
| 8 | 8 | ||||||||
| 7 | 7 | ||||||||
| 6 | 6 | ||||||||
| 5 | 5 | ||||||||
| 4 | 4 | ||||||||
| 3 | 3 | ||||||||
| 2 | 2 | ||||||||
| 1 | 1 | ||||||||
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A | B | C | D | E | F | G | H |
| Clarkeson, A. - Ursal, D. |
| 0-1, 19/09/2011. |
[15...Qc7
16.Bd4
Be6
17.g4
a5
18.g5
Nh5
19.Bxg7
Kxg7
the assessment is aproximately equal." Intermezzo]
16.Bd4
Qe6
17.g4
b5
"Also interesting is 17...a5 intending 18... a4 kicking the knight on b3. This is more aggressive and prepares the way for an exchange sacrifice with Rxd4 in the future." DU 18.h5
"There's nothing much wrong with this approach but the only line I could find in my own small library continued instead with...
[18.g5
Nh5
19.Bxg7
Kxg7
20.Rhe1
...and I think White stands slightly better." Intermezzo]
18...b4
19.Ne2
a5?!
"Better is Ba4 to give a retreat square for the queen." DU 20.Nf4
Nxe4?!
"I've added the assessment to this move as ultimately the assessment of it is not good. Objectively Black cannot save his queen this way so this isn't the best way to play. However, the game choice turned out well for Black so let's not be too picky." Intermezzo "There was also...
[20...Rxd4
...but after... 21.Qxd4
Qe5
22.Qxe5
dxe5
23.g5
Nxe4
24.fxe4
Bg4
25.Nd5
Bxd1
26.Rxd1
Bf8
27.h6
... I'm a piece down and my black squared bishop is become passive. There is also...;
20...Bh6
... but it will lead to a exchange down on my part without a pair of bishops a no pawn compensation." DU
In fact after... 21.Nxe6
Bxd2
22.Nxd2
Bxe6
23.Nxc4
Bxc4
24.Bxf6
exf6
25.Rxd6
Black is both the exchange and a pawn down.]
21.Nxe6?
"It would be interesting to understand, from a psycological perspective, why White missed his opportunity here. Did he panic or just get caught up in analysing the chain of forcing moves and miss the way to break it as a result? There was a refutation to Black's play in the form of...
[21.Qg2!
Simply stepping away from the threat and leaving the enemy queen with nowhere to go. The resultant position is pretty conclusive after... 21...Nc3
22.bxc3
Rxd4
23.Nxe6
Rxd1
24.Rxd1
Bxe6
The position tells it's own story. All this suggests that 20...Rxd4 probably was the best option available for Black afterall." Intermezzo;
"If... 21.fxe4
Qxe4
...I'm prepared to have this variation giving me compensation of 3 pawns for a piece." DU]
21...Nxd2
22.Rxd2??
"Andrew followed his mistake with a blunder. It should be...
[22.Nxd2
Rxd4
23.Nxd4
Bxd4
... I was prepared to give up the exchange but having a pair of bishops and a rook plus a pawn to compensate against his 2 rooks and a knight. His king's side pawn formation is weak and I could create strong central passed pawns in the endgame." DU]
22...Bxe6
23.Bxg7
Kxg7
24.hxg6
fxg6
"24...hxg6 is better." DU 25.Rdh2?!
"Better is...
[25.Re2
Kf6
26.Rxh7
Bd5
... and matters are still unclear." DU]
25...Bg8
26.Nd2
Rf4
27.Re2
e5
28.g5
Rf5
29.Ne4
d5
"At this point Andrew shows his frustration." DU 30.Nd6
Rxg5
31.f4
exf4
"Giving up another pawn was not a good idea but he is taking his chance." DU 32.b3
f3!
"I think this move was the exclamation point of a convincing win." DU 33.Rf2
Rf8
34.Rhf1
Rg3
35.Nb5
g5
36.Nd4
g4
37.Kb2
Rf4
38.c3?
Rg2!
"He just put his king in the line of fire at this point. But I can't see anymore option for him at this point either." DU 39.Kc2
g3
40.Rxg2
fxg2
41.Rg1
Rf2
42.Kd3
h5
43.Ke3
bxc3
44.Ne2
h4
45.Nf4
d4!
46.Ke4
c2
47.Rc1
Rf1
White resigned A complicated and exciting struggle in a major line of the Yugoslav Attack. Andrew missed one tactical chance to secure a winning advnatage but after that Darwin took his opportunity really clinically. A nice win to start the season." Intermezzo
[0-1] 
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