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Branko / Schiller / Wall vs J L Jerz / Rybka Masters vs. Machines Invitational (2007), Yahoo Chess, rd 5, Apr-14
Rubinstein Opening: Classical Defense (D05)  ·  0-1



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Kibitzer's Corner
Apr-21-07  chessmoron: 1.d4 <tournament created by Wilson Hu/chessmoron; Time control: 3 hours and a half> d5 <Notes by Bill Wall > 2.Nf3 e6 3.e3 c5 4.Bd3 Nf6 5.b3 Nc6 6.0–0 Be7 7.Bb2 0–0 8.Nbd2 b6 9.Ne5 Bb7 10.f4 Nb4 11.Be2 cxd4 12.exd4 Ne4 13.a3 Nc6 14.Nxe4 <Normal was 14.Bd3, but we took the knight with 14.Nxe4 to double pawns. > dxe4 15.Ba6 <if 15...Bxa6, then 16.Nxc6, threatening the queen, then 17.Nxe7+ and 18.c4. But it played 15...Qc7. > Qc7 16.Bxb7 Qxb7 17.Qe2 <We thought about 17.Qg4, but settle on the safer move 17.Qe2, threatening 18.Qxe4. > f5 18.c4 <We thought about 18.Qh5 and if 18...g6, then 19.Nxg6 favors White. But we expanded the q-side with 18.c4. > Rad8 19.Rad1 Nxe5 20.fxe5 <We could have tried 20.dxe5 instead of 20.fxe5. > Rd7 21.Bc1 <We also thought about 21.a4 so that Black would not have an attacking point with Bxa3. > b5 22.c5 a6 23.Be3 Qd5 < Black threatens 24...Qxb3, so we played 24.Qc2> 24.Qc2 h6 25.g4 <Risky! Safer move 25.b4. > fxg4 26.Rxf8+ Kxf8 <Human expected 26…Bxf8> 27.Rf1+ <or 27.b4> Kg8 28.b4 <We thought about 28.Qf2 Qxb3 29.Bxh6 (29.Qf7+ Kh7 didn't look good), but were afraid of 29...Kh7. > Bg5 <Tripled pawns!! > 29.Bxg5 Qxd4+ 30.Qf2 hxg5 31.Qxd4 Rxd4 32.Kf2 <Now another critical decision. We thought about 32.Rc1 to get behind the passed c-pawn, but maybe we were worried about e3 right away. > Rc4 33.Ke3 <33.Rd1, but did not want to see the black king get out with Kf7. > a5 34.bxa5 <34.Rd1 axb4 35.axb4 Rxb4 36.Rc1 as a drawn line. > Rxc5 35.Rb1 Rc4 <If 35...Rxe5 36.a6 and 37.a4 looked OK for White. > 36.Rb4 <36.a6 Rc3+ and Rxa3 looked good for Black. So we tried to exchange rooks with 36.Rb4, which would easily win for White. > Rc3+ 37.Kxe4 g3 <Now if 37...Rxa3 38.Rxb5 Ra4+ 39.Ke3 Kf7 40.Kf2 Kg6 41.Kg3 looked line a draw. > 38.hxg3 Rxg3 39.Rxb5 Rxa3 40.Kd4 < Now another critical position. I thought we could try for 40.Rb8+ and Ra8. Analysis would be 40.Rb8+ Kf7 41.Ra8 g4 42.Ra7+ Kg6 43.Ra6 Ra4+ 44.Ke3 Kf5 45.Ra7 Ra3+ 46.Kf2 Kxe5 47.Rxg7 Kf4 48.Rf7+ Ke4 49.Ra7. Now can White hold this position for a draw? But the others thought the rook would get out of play and wanted to get the king more activated for the draw. > g4 <The idea is that black can advance the two doubled pawns, sacrifice the rook for one of our pawns, and win. > 41.Kc5 g3 42.Rb1 Rxa5+43.Kd6 Kf7 44.Rf1+ Kg6 45.Kxe6 Kg5 46.Rb1 Kf4 47.Kd6 Ra6+ 48.Kd5 g2 49.e6 Kg3 50.e7 Ra8 51.Ke6 Kh2 52.Kf7 g5 <Cannot stop the two pawns, one which will queen and so we resigned. > 0-1

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