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| Move | N | Result | Elo | Players |
|---|---|---|---|---|
| Replay and check the LiveBook here |
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1.c4 g6 2.Nc3 c5 Black heads for a Symmetrical English variation. Other
possibilities here would include a KID or Gruenfeld-type setup. 3.Nf3 Bg7 4.g3 Nc6 5.Bg2 e6 6.0-0 White chooses the most common move, which is a solid
line; d4 here would lead to a more active line with a pawn sacrifice.
Interestingly, White only scores about 47 percent with the text move. Nge7 7.a3 both prophylactic against ...Nb4 and prepares an eventual b4 push. With
this variation, a less frequently played one, White scores over 51 percent. d5 Black decides to commit in the center, rather than the more popular O-O. 8.d3 0-0 8...dxc4 9.dxc4 Qxd1 10.Rxd1 Bxc3 11.bxc3 is something a Class
player might prefer, exchanging off as many pieces as possible with Black and
inflicting doubled c-pawns on White. In concrete terms, however, White is left
with the two bishops and the dark-square one is a monster, with Black's
dark-square weaknesses beckoning. Play could continue h6 12.Bf4 b6 13.Bd6 Bb7 14.Ne5 and Black is already under significant pressure. 9.Bg5
a thematic idea, designed to provoke a weakening Black pawn advance. h6 10.cxd5 exd5 10...hxg5 11.dxc6 Nxc6 looks fine for White. 11.Bxe7 the
decision to exchange the dark-square bishop involves a tradeoff of time (in
this case gained by avoiding a retreat) versus the two bishops, which Black
now gains. Nxe7 12.Rc1 Bd7 this doesn't seem to be the best placement for
the bishop. Playing it to e6 or eventually to b7 would keep it more active. 13.b4 cxb4 Black chooses to enter an IQP structure in exchange for greater
piece activity. 14.axb4 Qb6= 14...a5 is what Houdini prefers here,
immediately looking to create a passed pawn. 15.bxa5 Qxa5 15.Qb3 a5 16.Nxd5 this tactical option was not possible in the previous variation, where
the queen was on a5 instead of the more vulnerable b6 square. Nxd5 17.Qxd5 Bc6 17...Qe6!? 18.bxa5 another tactical follow-up exploiting the
location of the Qb6. Qxf2+ 19.Kxf2 Bxd5 White is a pawn up here, with the
passed d-pawn. Black has some compensation in terms of the two bishops and
White's potentially weaker pawns. 20.Rc5 Rfd8 21.Rb1 Bf8 22.Rcb5 Bc6 23.Ne5 an excellent idea from Zhao and confirmed by Houdini. The exchange
sacrifice is dangerous for Black to take. Rdc8 23...Bxb5 24.Rxb5 the
b-pawn will now fall as well. Rac8 25.Rxb7± 24.d4± passed pawns
must be pushed! Bg7 based on the game continuation, this seems to be a loss
of time, as the bishop will move back after a few moves. 24...Bxb5 the
exchange sacrifice is still good for White, but at least Black would get rid
of one of the powerful rooks on the queenside. 25.Rxb5 Ra6 26.Bxb7 Rf6+ 27.Bf3 25.Bxc6 bxc6 26.Rc5 White takes advantage of the absence of the Bf8. Ra6 27.Nf3 choosing to consolidate rather than play more aggressively with
something like Rb7. Bf8 28.Rb6 what masters call a "little tactic". Rca8 28...Bxc5 29.Rxa6 Bd6+- and now it will be much easier for White to try
and push through the passed a-pawn, whose queening square cannot be covered by
the bishop. 29.Rcxc6 Rxa5 although material is still even after the tactic,
now nothing stands in the way of the d-pawn. 30.Rb7 Ra2 31.Rcb6 Re8 32.Rb2 Raa8 33.Rc2 Bd6 again a bishop move appears to lose time, as it could have
moved directly to g7 instead of taking three tempi to do it per the game
continuation. The idea appears to be that the bishop covers the e5 square,
which it could also do from g7. 34.Rd7 Ra6 35.Rb2 Bf8 36.Ne5 Bg7 the
f-pawn is protected tactically. 37.Nf3 given the lack of progress, one must
think that White (and perhaps Black too) was looking to make a series of safe
moves in order to save some time on the clock. 37.Nxf7? Rf6+ 37...Rae6 38.Rc2 Re4 39.Rd2 Bf8? this bishop is now truly a drag on Black's play.
White immediately seizes the opportunity on e5, left uncovered by the bishop. 39...g5!? Houdini thinks that Black's best option is to try to generate
counterplay on the kingside. 40.Ne5+- Bc5 a desperation move. 40...Bg7? no longer helps, now that Black's Re4 is cut off from assistance and
vulnerable. 41.Kf3 and Black loses material. 41.Nxf7 41.dxc5 is also
winning for White. R4xe5 42.c6 Rc5 43.c7 41...Bxd4+ 42.R2xd4 42.R7xd4? White has no need to abandon the knight, as the e-pawn can be lost without
damaging her winning prospects. Kxf7 43.Rxe4 Rxe4 42...Rxe2+ 43.Kg1
and now White is a full piece up and her king cannot be trapped. 1–0
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| White | EloW | Black | EloB | Res | ECO | Rnd |
|---|---|---|---|---|---|---|
| Zhao,X | 2579 | Lagno,K | 2532 | 1–0 | A37 | 9.1 |
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