Larry Mark Christiansen - John N Jacobs [E07]

Lone Pine op/Lone Pine, CA USA (1) 1974

1. Nf3 Nf6 2. g3 d5 3. c4 e6 4. Bg2 Be7 5. b3

5. O-O O-O 6. d4+/= is the Catalan.


5... c5 6. cxd5 exd5 7. d4

White gives Black an isolated Queen's pawn.


7... Nc6 8. O-O O-O 9. Bb2 Ne4! 10. dxc5

Necessary to avoid the annoying pin by ...Bf6. 10. Nc3 Bf6!=/+ 10. Nbd2 Bf6=/+


10... Bxc5 11. Nc3 Nxc3! 12. Bxc3 d4=/+

Gheorghiu thought Black already had a sizable edge.


13. Bb2 Bg4 14. Rc1 Bb6 15. h3 Be6 16. Qd2 Qd7 17. Kh2 Rfe8

Placing the Rooks at e8 and d8 is best in these positions.


18. Rfd1 Rad8 19. Ba3?

The beginning of a maneuver intended to put pressure on Black's pawn with Qb2 and Bc5 and possibly e3 if the Black Queen remains at d7. The problem, of course, is that this plan is slow and allows Black to attack. White must play 19. e3! d3! (19... dxe3?? 20. Qc3+-) 20. Ne1 and hope that he can win the d-pawn.


19... Bd5! 20. Qb2 Qf5 21. Kg1 Bxf3! 22. Bxf3

22. exf3 d3!-+


22... d3!-+

A classic case of the IQP's "lust to expand." 22... Qxh3=/+ 23. Bc5 offers White more chances for defense a pawn down.


23. Kg2

23. Rf1 Qxh3 gains tremendously in force due to the threat of Qxg3+ with the opened Bishop's diagonal.


23... Rxe2! 24. Bxe2?

24. Rd2 Rde8!->


24... Qxf2+ 25. Kh1 dxe2 26. Rxd8+ Nxd8! 27. Qe5

27. Qc2 Qf1+! 28. Kh2 Bg1+ 29. Kh1 Be3+


27... Qf1+ and Black will force mate. 0-1

Game(s) in PGN