[Event "Idaho Open"] [Site "Boise, ID"] [Date "1979.04.22"] [Round "5"] [White "Parsons, Larry R"] [Black "Weikel, Jerome V"] [Result "0-1"] [WhiteElo "1823"] [BlackElo "2077"] [ECO "A13"] [Opening "English: 1...e6 2.Nf3 d5"] 1. c4 e6 2. Nf3 d5 3. d4 c6 {Although a very solid defense, the Slav is not a good choice here since Black has to win this game to win first place. -Weikel} 4. cxd5 exd5 5. Nc3 Nf6 6. Bg5 Be7 7. e3 {Q-B2 is the usual and stronger move. -Parsons} Bf5 8. Bd3 Bxd3 9. Qxd3 Nbd7 10. O-O O-O 11. Rab1 {White prepares for the thematic break P-QN4-N5 constituting the minority attack. If met indifferently, this strategy will net a lasting plus.-Weikel} h6 12. Bh4 g5 $5 {A very slow game up to here. Black jumps at the chance to mix it up. With the white squared Bishops off the board, Black's K-side is not as shaky as it looks.-Weikel} 13. Bg3 Nh5 14. Ne5 Nxg3 15. Nxd7 Qxd7 {If instead 15...NxR; 16. NxR, NxP?; 17.Q-R7ch, KxN; 18.Q-R8 mate!-Parsons. Not 15...NxR because 16.NxR, BxN (NxRP leads to mate - see above); 17. KxN and white has kept his pawn structure healthy.-Weikel} 16. fxg3 $5 {White decides to accept a bad pawn formation, including a backward KP, in order to open lines towards the Black king.-Weikel} Qe6 {Black wants to play ...P-KB4 but to do so immediately allows 17. P-KN4 e.g. PxP? 18. Q-N6ch! White's next move prevents Black's plan. -Parsons and Weikel} 17. Rf5 Bf6 18. Rbf1 Bg7 19. g4 Rae8 20. R1f3 Re7 21. h3 Rfe8 22. Kf2 {White wants to play N-K2 but couldn't at move 21 because of Q-K5 and can't now because ...QxPch!; 23. RxQ, RxR; 24. Q-Q, RxN and Black is winning. -Parsons} Qd6 23. Ne2 Qb4 24. Qc2 {24. Q-B3, Q-R5 and the Black Queen has penetrated.-Weikel} a5 25. a3 Qd6 26. Ng3 Rc7 27. Nh5 Re6 ({Even though Black made his last two moves preparing for ...P-QB4! he now becomes afraid of } 27... c5 $1 28. Nf6+ Bxf6 29. Rxf6 cxd4 $3 30. Qf5 (30. Qh7+ $6 Kxh7 31. Rxd6 dxe3+ 32. Rxe3 Rc2+ 33. Kf3 Rxe3+ 34. Kxe3 Rxb2) 30... dxe3+ 31. Rxe3 (31. Ke2 Qc5 $1 32. Qd3 d4 33. Rg6+ $1 Kf8 $1 34. Rxh6 Qc2+) 31... Qc5 32. Qd3 (32. Rg6+ Kf8 $1) 32... Rce7 33. Rff3 Kf8 $1 34. Ke2 Rxe3+ 35. Rxe3 Rxe3+ 36. Qxe3 Qxe3+ 37. Kxe3 Ke7 38. b4 axb4 39. axb4 Kd6 40. Kd4 b6 $1 {wins after te runs out of tempi. Therefore, White's best seems to be 28.PxP!, RxBP; 29. Q-Q3, R/ 1-QB!-Weikel}) 28. Qd2 Bh8 $2 {28...P-N3; 29.NxB, KxN is equal. -Parsons. Approaching time trouble Black makes a poor quick move.-Weikel} 29. Qxa5 Rce7 $2 {(Parsons)} 30. Qa8+ {Perhaps a bit greedy. With White's Rs locked in on the K-side it seems more prudent for White to take his one pawn and run! Capturing the 2nd Pawn opens lines for Black's Rooks.-Weikel} Re8 31. Qxb7 R6e7 32. Qb3 Rb8 33. Qc2 c5 {Desperation. now it's my turn to blunder.-Parsons} 34. Nf6+ $2 {34.R-B6!! wins in every variation. The prettiest is 34.R-B6, BxR; 35. NxBch, K-B; 36. Q-B7, R/2-N2; 37.QxPch, K-K2; 38.N-N8ch, RxN; 39.RxPch, KxR; 40.QxQ. I quickly dismissed 34.R-B6 because of ...BxR, 35.NxBch, K-B; 36.Q-B7, RxPch but then if 37.K-N Black is forced to give up a R to prevent mate with .. .R-N8ch; 38. QxR--a recapture I overlooked.-Parsons} (34. Qxc5 Rxb2+ 35. Kg1 { (35.K-K or K-B then ...R-B2!!)} Rb1+ 36. Rf1 Qxc5 37. dxc5 Rxf1+ 38. Kxf1 Rxe3 39. Rxd5 Rxa3 {and Black might be able to draw.-Weikel}) 34... Kf8 35. Rxd5 Qe6 36. Re5 $2 {Probably best is 36.RxBP, BxN wtih 4 Pawns for a Bishop.-Parsons} Qa2 $1 {Finally White's weak second rank comes to light.-Weikel} 37. Qxc5 $4 Rxb2+ 38. Kg1 Rxg2+ {#R} 0-1