(1) Kenneth Rogoff - Jan Smejkal [A34]

Biel Interzonal Biel (5), 1976

[Dylan Loeb McClain]

1.c4 ¤f6 2.¤c3 c5 3.g3 g6 4.¥g2 ¥g7 5.e3 0–0 6.¤ge2 ¤c6 7.0–0 d6 8.d4 cxd4 9.exd4 ¥f5 10.h3 h5 11.¥g5 £d7 12.¢h2 e5 13.d5 ¤d4 14.¤xd4 Diagram

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9r+-+-trk+0{
9zpp+q+pvl-0
9-+-zp-snp+0
9+-+PzplvLp0
9-+PsN-+-+0
9+-sN-+-zPP0
9PzP-+-zPLmK0
9tR-+Q+R+-0
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 Smejkal, he said, outplayed him in the opening. 14...exd4 15.¤b5 [15.£xd4 ¤g4+–  After 14 . . . ed, Rogoff could not take the pawn with 15 £d4 because 15 . . . ¤g4 wins his queen. White's pieces soon found themselves on awkward squares, but then Black got overly ambitious, pushing his kingside pawns forward somewhat recklessly.] 15...¦fc8 16.¦c1 ¤h7 17.¥f4 g5 18.¥d2 a6 19.¤a3 Diagram

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9r+r+-+k+0{
9+p+q+pvln0
9p+-zp-+-+0
9+-+P+lzpp0
9-+Pzp-+-+0
9sN-+-+-zPP0
9PzP-vL-zPLmK0
9+-tRQ+R+-0
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19...g4 20.hxg4 hxg4 21.b4 ¥d3 [21...¤f6] 22.¦e1= £f5 23.¢g1 ¥f6 Diagram

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9r+r+-+k+0
9+p+-+p+n0
9p+-zp-vl-+0
9+-+P+q+-0
9-zPPzp-+p+0
9sN-+l+-zP-0
9P+-vL-zPL+0
9+-tRQtR-mK-0[
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24.c5 Smejkal must have missed the point of 24 c5, freeing up the c4 square for White's knight. 24...¤g5 25.¥xg5 ¥xg5 26.¤c4 Diagram

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9r+r+-+k+0{
9+p+-+p+-0
9p+-zp-+-+0
9+-zPP+qvl-0
9-zPNzp-+p+0
9+-+l+-zP-0
9P+-+-zPL+0
9+-tRQtR-mK-0
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 After 26 ¤c4, 26 . . . ¥c1 27 ¤d6 £g6 28 ¤c8 ¢c8 29 Qc1 would have yielded White a nice advantage. 26...¦d8 [26...¥xc1 27.¤xd6+-] 27.¤xd6 ¦xd6 28.cxd6 ¥xc1 29.£xc1 ¦c8 30 White was better anyway after 30 £d2, but then Black erred with 30 . . . ¢h7?, putting his king on the wrong diagonal, [30...¦d8 31.£h6] Diagram

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9-+r+-+-+0
9+p+-+p+k0
9p+-zP-+-+0
9+-+P+q+-0
9-zP-zp-+p+0
9+-+l+-zP-0
9P+-wQ-zPL+0
9+-+-tR-mK-0[
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and Rogoff took advantage of Black's overloaded queen with  31.d7 ¦d8 32.¦e7 ¢g6? [32...¢g7] 33.d6 ¢f6 34.£h6+ £g6 35.£h4+ ¢g7 36.¦e8 Diagram

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9-+-trR+-+0{
9+p+P+pmk-0
9p+-zP-+q+0
9+-+-+-+-0
9-zP-zp-+pwQ0
9+-+l+-zP-0
9P+-+-zPL+0
9+-+-+-mK-0
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  Smejkal resigned because he could not stop mate (36 . . . ¦d7 37 £h8). 1–0

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