I have not posted for a while as I have been on holiday so I decided to post some notes to a game I played quite a while ago. These notes were first published in New Zealand Chess Magazine but they were so butchered I would be surprised if anyone could follow them in any case.
One might get the impression from this game also being against Gavin that I play him a lot. Not really true, actually we just play more interesting games.
Gavin Marner - Nicolas Croad
North Island Championship (8), 2006
This game was played in the final round of an 8-round swiss tournament. I was seeded second and currently sitting in second place however I could not catch the tournament leader and I didn't expect the only player half a point behind me would be likely to win against him. In other words neither of us required any result out of the game and we were free to play without any regard to the result.
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.O-O-O d5 10.Nxc6 bxc6 11.Bh6
This move was not known to me (technically also the previous move) but as Gavin informed me after the game it is known to theory. In fact he has played this way before. My reaction is very naive.
11...Bxh6 12.Qxh6 Qb6 13.e5
Initially I had gone into this position expecting to play 13...Nd7 14.f4 Qe3+ 15.Kb1 Nxe5 however I thought that after 14.h4 Nxe5 15.h5 I am completely lost. The position has taken on a very critical nature and I sank into deep thought.
13...Nh5?!
I discovered the main like here goes, 13...Nd7 14.h4 Nxe5 15.h5 Bf5 16.g4 and now, 16...f6! (the move I didn't find during the game) saves Black from his fate.
14.g4 Rb8!

The only move worth considering. I execute a piece sacrifice leading to an extremely unclear position. In return for my piece the White king takes a journey into the centre of the board and White's attack down the h-file is blocked by 2 h-pawns. Gavin in not required to take up the challenge and if there was a moment to change the course of the play it was now.
15.gxh5?!
The alternatives don't leave White material ahead and Gavin takes up the challenge.
Instead 15.Na4 Qb4 16.gxh5 (16.b3 Qf4+ 17.Qxf4 Nxf4 with some advantage to Black) 16...Qxa4 17.Bd3 Qh4! 18.Rhg1 c5 19.f4 Bg4! gives Black a significant advantage.
15.b3 Qb4 16.gxh5 Qxc3 and Black is better.
15.Bd3! is a very strong move and Gavin would probably have won this game had he played it. He clearly won a brief post-mortem after the game with this move. I didn't consider it at all being a little pre-occupied with the piece sacrifice which I thought was on the cards. Variations are hardly required, 15...Ng7 16.h4 f5 17.Na4 Qb4 18.h5 and White has great chances because Black's attack has stagnated and his king in is a precarious position. Black must force the queens off the board with the move 18...fxg4 19.hxg6 Qf4+ and hope to draw the resulting position where it is only likely he will go wrong.
15...Qxb2+ 16.Kd2 Bf5 17.Bd3
17.Rc1 Rbd8! 18.Rg1 (18.Ne2 d4 -+) 18...Qb4! 19.Rb1 Qd4+ picks up the rook.
17...Bxd3 18.Kxd3 Qa3!!
Amazing really. With Black a piece down the best move is a quiet one setting up a pin across the third rank, preparing to get the piece back. When I first saw this position I was going to play 18...Qb4 19.Ne2 Qc4+ 20.Kd2 Rb2 with an unclear position but eventually convinced myself this move is stronger.
19.Kd2
Not 19.Qe3 d4 20.Kxd4 Rfd8+ 21.Ke4 Rb4+ -+
19.Qc1 Qb4 20.Qa1 is the sort of defensive maneuvre you don't consider (and I didn't) but after 20...f6 white has serious problems to solve none the less.
19...Qb4 20.hxg6?
This move clears the f7 square for Black to defend his kingside from. White needed to realise that Black has full compensation for his sacrifice and find the most accurate way to force the draw. There is no alternative for either side in the variation, 20.Rhg1 Qd4+ 21.Kc1 Qxc3 22.hxg6 Qa1+ 23.Kd2 Qd4+ 24.Kc1 and I must take a perpetual check.
20...fxg6 21.Rhg1 Rf7
The game comes to a sudden and not very favourable end after, 21...Rxf3 22.Rxg6+ hxg6 23.Qxg6+ Kf8 24.Qh6+ Ke8 25.Qh5+ Kd8 26.Qxf3 d4 27.Ke2! +- or the alternative, 21...d4 22.Rxg6+ Kf7 23.Rg7+ Ke8 24.Qxc6+ Kd8 25.Ke2 +-
22.Rb1 Qd4+ 23.Ke2 Qxe5+?

I was feeling my way through the complications here and had not even realise that I could/should play on in this position. The most accurate move here was 23...Rd8! not allowing White any alternative but to transpose into the position which the game reaches on move 28.
Of course not 23...Rxb1 24.Rxb1 Qxc3 25.Rb8+ Rf8 26.Rxf8#
24.Kd2?
Gavin doesn't want the draw which can happen after 24.Qe3 Qxh2+ 25.Qf2 Qe5+ 26.Qe3 but he now ends up in a difficult position. Instead Black can play on with 25...Qxf2+ 26.Kxf2 Rbf8 27.Rg3 e5 though this looks a bit more like a losing attempt than a winning attempt.
24...Qd4+ 25.Ke2 Qc4+ 26.Kd2 Qd4+ 27.Ke2 Rd8!
I repeated the position here a couple of times to gain clock time while I was deciding if I would play on or accept the repetition. My last move keeps the queens on the board and shows Black really has the advantage here. Amazingly enough White has only one decent response.
28.Qd2 Qe5+ 29.Kd1
29.Qe3 Qxe3+ 30.Kxe3 d4+ -+ was the most important point of 27...Rd8.
29...Rxf3 30.Re1!?
A clever concept which I completely over-looked. Gavin gives back the piece to double rooks on the seventh rank. Good alternatives are difficult to come by, 30.Re2 Rdf8 31.Re1 Qxh2 leaves White struggling without even having material equality. Still when you have sacrificed material it is always some relief at the point when you actually get it back again.
30...Qxc3 31.Qxc3 Rxc3 32.Rxe7 Rh3 33.Rbb7 Rxh2 34.Rg7+?!
Making the win easy. More resistance was offered by 34.Rxa7 d4 35.a4 d3 36.cxd3 Rf8 37.Re1 Ra2 38.a5 Ra1+ 39.Kd2 Rf2+! 40.Ke3 Rxe1+ 41.Kxf2 Ra1-+ but I should win here with my rook behind the pawn.
34...Kh8 35.Rxa7 Rf8 36.Ke1?!
This shortens the game a little however after 36.Kc1 Rf1+ 37.Kb2 Rf2 38.Rgc7 Rxc2+ 39.Kb3 Rb2+ 40.Kc3 Rb8 41.Rxc6 Rd8 -+ the win is no longer in doubt.
36...Rb8 0-1