However these values don’t hold good at all times on the chessboard as everything depends on the position prevailing at that time.
In the game which follows Black has a knight and bishop for White’s rook but the latter has a vital passed pawn on the queen side and two connected pawns on the King side. Moreover Black’s bishop and knight cannot get into the game as they have to hold to the passed pawn on the queen side.
White: Semen Dvoirys (2565) – Black: Evgeny Gleizerov (2550)
St Petersburg ,1993
French Defence
1.e4 e6. The French Defence
2.d4 d5 3.Nd2 Nf6 4.e5. Advancing the pawn
4. ..Nfd7 5.c3 c5 6.Bd3 Nc6 7.Ne2 cxd4 8.cxd4 f6 9.exf6 Nxf6 10.0–0 Bd6. Still following Opening theory
11.Nf3 0–0. He can think about 11...Qc7
12.Bf4 Bxf4 13.Nxf4 Ne4 14.Qc1. If 14.Nh5 g6 15.Ng3 Nxg3 16.hxg3 Qb6 17.Qa4 a6 18.Rab1 Bd7 19.Be2 Ne5 20.Qd1 Nxf3+ 21.gxf3 Rac8
14...Ng5. If 14...Qf6 15.Ne2
15.Nxg5. Both have shown inclination for some quick exchanges in the Opening
15. ..Qxg5 16.Bxh7+. White sacrifices the bishop which was a new move then. If 16.Ne2 Qf6) 17.Qe3 Bd7 18.Rad1 Rac8 19.Bb1 Be8 20.h3 Bf7 21.Nf4 Rfe8 22.b3 e5 led to an equal position in a previous game
16...Kxh7 17.Nxe6. White has played an interesting combination
Diagram 1
17. ..Qf6. If 17...Qxc1 18.Nxf8+ Kg8 19.Raxc1 Kxf8 20.Rfe1 Kf7
18.Nxf8+ Qxf8 19.Qg5 Qf5
The Black King is exposed and hence he is interested in swapping queens
20.Qh4+
20.Qxf5+ leads to more or less an equal position
20...Kg8 21.Rae1
A good move
21. ..Bd7 22.Re3
If 22.h3 Re8) 23.Rxe8+ Bxe8 24.Re1
22...Re8 23.Rxe8+ Bxe8 24.h3. If 24.Re1 Bf7 25.h3
24...Qd3. He can also think about 24. ..Qc2 or 24...Qe6
25.Re1 Bf7. If 25...Bd7 26.Qh5 Qxd4 27.Rd1 Qe4 28.Qxd5+ Qxd5 29.Rxd5 Be6 30.Rb5 b6 31.a3 with advantage for White
26.Qg4 Nxd4.
If 26...Kh7 27.Qd7 Bg6 28.Qxb7 Nxd4 29.Qxa7
27.Re7 Nf5 28.Rxb7 d4 29.Qf4 Bg6 30.Kh2. If 30.g4 Nh4 31.Qc7 Nf3+ 32.Kg2 Nh4
30...Qe2 31.Rd7. If 31.Rxa7 d3 (31...Qxb2 32.g4 Nh6 33.Ra8+ Kh7 34.Qf8 Be4 35.Qh8+) 32.Rd7+
31...d3. If 31...Qxb2 32.g4 Nh4 33.Kg3
32.Qc4+ Kh7 33.Rxd3. If 33.Qxd3 Qxf2 34.Qd2 Qg3+ 35.Kh1 Ne3
33...Qxf2. If 33...Nh6 34.Rc3 Qxb2 35.Rf3 with White holding an edge
34.Qc1 Nd4
If 34...Nh4 35.Rg3
35.Qe3
White wants to trade queens now
35. ..Qxe3 36.Rxe3 Bb1 37.Ra3 Nc6 38.Ra4 a5 39.Rc4 Nb4 40.a3 Nd3 41.b4 axb4 42.axb4 Ne5 43.Rc7 Bd3 44.b5 Nc4
If 44...Bxb5 45.Rc5
45.g4 Na5 46.b6
White’s plan is simple, he wants to advance this pawn to the last rank with every opportunity
46. ..Be4 47.Kg3 Nb7 48.h4 Kh6
If 48...Kg8 49.Kf4 Bd5 50.h5 with White clearly in the driver’s seat
49.g5+
These two connected pawns make things more difficult for Black
49. ..Kg6 50.Kg4 and Black resigned for he cannot hold on as 50...Kh7 51. h5 Kg8 52.Kf4 Bg2 53.Rc8+
Diagram 2
Black to play and win
1.... Ng4 2.fxg4 hxg4 3.Re1 Qxh2+ 4.Kf1 Qh3+ 5.Kg1 Qh1 checkmate.
