Paul Cumbers wrote
on 05/09/10 at 23:04:57:
on 04/27/10 at 00:21:02:
Paul Cumbers wrote
on 01/18/10 at 17:24:23:
Dave Ledger 2245 v Paul Cumbers 2218, 4NCL 17.1.2010
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Be3 Ne4 7.Qg4 g6 8.a3 Bxc3+ 9.bxc3 c5 10.Bd3 h5 11.Qf4
g5 12.Qf3 Nxc3 13.dxc5 d4 14.Bd2 Nc6 15.Bxc3!?
dxc3 16.Qe3 Qd5? 17.Nf3 g4 18.Be4! Qc4? 19.Bxc6+ bxc6 20.Ng5 and with the knight coming to e4 and d6, I was busted and duly lost (the rest of the game is academic).
A painful experience, but not enough to put me off this line... The good news is I think Black can improve with 16...Qc7!
e.g. 17.h4 Nxe5 (17... g4?! 18.f4! gxf3 19. Nxf3 and White holds onto e5) 18.hxg5 Bd7 19.Be4 O-O-O 20.Qxc3 Bc6 21.Bxc6 Nxc6 22.Nf3 e5, unclear.
Black has moves besides 16...Qc7, not that I criticize that one. E.g. 16...Rg8 17.Rd1 Qc7; 16...Qd4 17.Qxd4 Nxd4 18.Rb1 Bd7.
I like the idea of multiple alternatives, however I need some convincing about the viability of these! Both 16…Rg8 and 16…Qd4 ignore the plan of undermining e5 (which is a key idea of Black’s setup imo). Viz:
(a) 16...Rg8 17.h4! g4 (or 17...gxh4 18.Nf3) 18.f4 gxf3 19.Nxf3, when White offers the g-pawn to maintain the strongpoint on e5.
(b) 16...Qd4 17.Qxd4 Nxd4 18.Be4! Bd7 19.Ne2 Bc6 20.Nxd4 Bxe4 21.f3 Bg6 22.O-O-O, with a slight edge?
I would prefer White in either case (unless you can change my mind
Concerning (a) I looked, and I agree, e.g. 16...Rg8 17. h4 g4 18.f4 gxf3 19.Nxf3 Bd7 20.O-O! Qc7 21.Rae1 0-0-0 22.Ng5.
Concerning (b), after 22.O-O-O I looked at 22...O-O-O and came up with this, no doubt, too lengthy set of variations: 23.Nb5 (I am sure that there are alternatives worth considering; 23.Nb3!? g4!?) 23...Kb8 24.Nd6 (24.Nxc3 Rc8 and 24.c6 bxc6 25.Nxc3 don't appear to be especially harmful) 24...Rd7 and now:
A. 25.Rhe1 Rc7
B. 25.Rd4 Rc8 26.Rc4 Rc6
C. 25.c6 bxc6 26.Rhe1 (26.h4 gxh4 27.Rxh4 f6) 26...Rhd8 27.g3 (otherwise Black straightforwardly evicts the knight) 27...f6 28.f4 fxe5 29.fxe5 Rf8 30.Re3 (30.Rf1 Rdd8) 30...Rf2 31.Rxc3 Re2 32.Rd4 Kc7 33.Nb5+ Kd8 and I'm not entirely sure, but Black seems to have enough to hold this ending, say 34.Nxa7 Be4 or 34.Rxc6 Rxe5.
D. 25.h4 Rc7 26.hxg5 Rxc5 27.f4 Ra5 28.g4 (28.Kb1 Rxa3 doesn't help) and Black has the interesting resource, which poetically depends upon his c3 pawn, of 28...Rxa3 29.Kb1 Rb6+ 30.Ka2 (or draws by repetition) 30...Rb2+ 31.Ka1 Rxc2 32.f5 exf5 33.gxf5 Bxf5 34.Nxf5 Rc8 and unclear to me, but Black is by no means without play.
All this with silicon assistance, of course.