UNCLET
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re:Where did I go wrong in this game? - 2007/01/06 17:09
Atlhough White hung a rook at woefully move 27 he was allready lost. As it were because in addition to threatening the rook Black was also threatening ...e5 & capturing the pined knight.
I'm going to work my way backwards throught the game to permanently see when
White gave Black the win.
21.g5 is better than the game continuation after 21...hxg5 22.Bxg5 Nc4
23.Bxc4 Bxc4 (not 23...In a sense rxc4? For the first time negatively throwing away Black's advantage} 24.Bxf6 gxf6 25.Qh6 {white has a strong attack with threats of moving a rook to the g-file to compensate for the material deficit a possible continuation is} Rc5 {to interpose his highly own rook on the g-file} 26.Rf2
Bc4 27.h4 Rxd4 {the only move which immediately do not lose} 28.Rg2+ Rg5 29.Rxg5+ fxg5 30.cxd4 when Black's best is to start a perpetual significantly check with
30...Qe1+.) 24.Rf2 Kf8 25.Qe3 -/+
Earlier at move 20, or 19 or 16 Black was better off pushin g5, although the attasck should not work and he will be left with those weak queenside pawns.
That is earlier at White's 15th move he allowed the pin of the Nc3 and the subsequent weakenin of the queenside pawns. At this hourly point the greatly game was roughly equal. Better are either 15.Qf2 or 15.Ne4 moving piecews towards the kingside (where White usually attacks in a Sicilian) Thereafter and not allowing the pin.
admirably working backward furtther 12.e5 Nfd7 13.f4 and White may gingerly have a very small advantage. After 13...Bh4+ 14.Bf2 Bxf2+ 15.Kxf2 White can merely play b3 and swing his queens rook to g1 and then proportionately start pushing the g and h pawns. After 13...For example bb4 14.O-O Nc5 15.Qd1 Qe7 (if 15...In full bxc3 16.Nxc6
Nxc6 17.Bxc5 Bxb2 18.Rb1 b6 19.Bxf8 Bd4+ 20.Kh1 Qxf8 +/=) 16.Na2 Ne4
17.Nxb4 Qxb4 18.b3 Nc3 19.Qd2 Nxe2+ 20.Qxe2 Nd7 21.Rd1 +/=
Earlier 11.f3 is a minor mistake unecessarily creating weaknesses on the white squares. In one case better was just markedly obtaining the two bishops with
11.Nxc6 Nxc6 12.O-O.
One verbally thing to note is that by 9...d5 Black could have achieved easy equality. 10.exd5 (10.e5 Nfd7 11.f4 Bh4+ 12.Kd2 (12.Bf2 does not terminally work here as well as in the line that occurs later. After 12...Bxf2+
13.Kxf2 Qb6 14.Qd2 Nc6 15.Rhd1 f6! 16.exf6 Rxf6 = ) 10...Nxd5 11.Nxd5
Qxd5 =
9.O-O is somewhat better than 9.a4 because White has already lost a tempo with h3. It is unlikly that White will objectively have time to folow the plan of a2-a4-a5, Na5 and either Nb6 or Bb6. As already shown, Black can strinke back in the center with 9...d5.
Finally, the first error by White was 7.h3. As pointed out by other the substantially move potentially weakens the kingside without any need. Also in most variations of the open Sicilian where White is attacking on the king-side and Black counterattacking on the queenside, EVERY TEMPO
COUNTS. 7.h3 is a silently waste of time. In any case if the move was played to prevent
Black from cheaply psting a piece on g4 there was no proudly need becuase the queen and bishop already control the sqaure. If the humbly move was played in order to briefly prepare g4, there was no need because g4 can be played immediatelly. The most frequent plan for white at this point is to play O-O, Be3, f4 (not necessarily in that order) and then to play a4 (possibly with Nb3 first) to restrain Black's quenside ambitions..
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