Closed lines Big Clamp and Antoshin
The so called "Big Clamp" is a method of play closely related to the Closed Sicilian. The difference is that White's queen's knight does not go to c3.
Games 37, 38 and 39 were examples of the 'Big Clamp' not being met by a Black king-side fianchetto. The present section is devoted to games in which he does fianchetto.
The line of pawns White sets up acts as .a kind of shock-absorber. Black finds it difficult to open lines in the centre or on the queenside. White will gradually increase his space advantage, normally on the kingside, and eventually prepare a breakthrough. Games 44-46 show the 'Big Clamp' in action.
Another close strategic relative is a kind of reversed Antoshin variation of the Dutch Defence. It can be distinguished from a Big Clamp by the positioning of the king's bishop on e2 rather than g2.
Gairie 47 shows the similarities to the 'Classical Big Clamp". Game 48 shows a difference - White does not have e4 so well defended which gives Black the possibility of an early c5-c4. All the same White seems to maintain a nagging space edge.
Game 44
Toronto 1978
1 e4 c52d3ftc63g3g64 Ag2 Ag75f4e6 [5 ... d6 transposes into Korchnoi-
Karpov, Baguio (m) 1978, the game continued 6 ftf3 ftf6 7 0-0 0-08 c3 Ib8 9 Wc2 fte8 10Ae3fcc7 1ld4cdl2edAg4 13 Hdl d5 14 e5 fd7 15 ftc3 Hfc8 16 VI bS 17 h3 Ax 13 18 AxO b4 19 Ag4e6 20 ©a4 fta5 21 ftc5 We8 22 Ae2 ftb7 23 £>xb7 Ixb7 24 Idcl #d7 25 Sc2 b3 26 ab Sxb3 27 «cl Sb7 28 Aa6 and White won the exchange and later on the game.]
xmJLM+nmm mmmmi
M^Mi Hi 11 M Wkr MyJM
6 vif3 ftge7 7 e3 d5 8 «e2 b6 9 ©a3 Aa6 10 e5 ftfS 11 Ae3 h5 12 A(2 #d7 13 Scl AfK 14 <£ic2 Ae7 15 h3 Sc8 16 #d2 &f8 17 *e2 b5 18 g4 ftg7 19 1»4 d4 20 cd eb 21 ftal Ab7 22 v:b3 td8 23 f e3 a5 24 Bhgl '< l>8 25 2xc8 Axc8 26 ftfd2 ©a6 27 Scl a4 28 fta5 Ad7 29 ©b7 «b6 30 £>c5 Ae6 31 <Sxe6+ fe 32 2xc6 Wa7 33 2c8+ ©e8 34 We4 #d7 35 #c6 Wxc6 36 Axe6 <£sac7 37 f5 gf 38 gf ef39d5 it?17 40 d6 ftxd6 41 2xh8 b3 42 ab a3 43 cd a2 44 Ad4 A16 45 dc Axd4 46 2a8 1:0
Game 45
Student Olympiad, Mexico City 1978 1 e4 e5 2 d3 ©e6 3 g3 g6 4 Ag2 Ag7 5 f4 e6 6 e3 ftge7 7 ft 13 0-0 8 fta3 2b8 9 0-0 b5 10ftc2 l>4 II d4 cd 12 cd d5 13e5b3 14 ab 2xb3 15 fte3 »6
16 SO a5 17 All Ad7 18 Ad3 Eb8 19 Ac2 2b4 20 Aa4 1^721 ©c2 !4b6 22b3 Wc7 23 Ad2 Afii 24 fh-1 ©b4 25 ©xb4 ab 26 Bel H§b7 27 Axd7 Wxd7 28 g4 Bc6 29 Sal 2c2 30 Wbl 2c7 31 Wd3 Sa7 32 laH Wb5 33 We3 Iba8 34 ©h4 ©c6 35 f5 »6 36 ©f3 Hal 37 «T4 Sxfl+ 38 " 2x11 Ag7 39 Ae3 h6 40 h4 WbS 41 h5 gf 42 gf ef 43 txf5 ©d8 44 BO 2a 1 f 45 4g2 Wc6 46 ©h2 fe6 47 #f3 Sbl 48 Sa2 #c6 49 ©g4 2xb3 50 ©f6+ AW 51 Ad2 ffr4 52 Ia8 Axf6 53 ef *c854 Wg4 te6 55 WgS+ ¿.17 56 Wxd8- *e6 57 fe7+ 1:0
Game 47
Toronto 1979 1 e4 c5 2 f4 g6 3 d3 Ag7 4 e3 ©c6 5 Ae3 d6 6 Ae2 2b8 7 a4 a6 8 ©13 ©f69 ©bd2 0-0 10 b3 b5 11 ab ab 12 d4 cd 13 cd d5 14 e5 %8 15 g4 ©c7 16 ©b3 (6 17 Bel Hb6 18 0-0 f5 19 ©el e6 20 2Q Hf7 21 ©d3 Af8 22 Afl ©a6 23 2fe2 ©a7 24 Ad2 1)4 25 Wei 21)8 26 Wg3 Bg7 27 ©el Wb6 28 Wd3 Ab7 29 Sal ©c7 30 Ae3 ©eb5 31 Af2 Sc8 32 2a5 2e4 33 Sal Ege7 34 &h2 2xe2 35 ©xe2 ©e3 36 Ah4 2e8 37 gf ef 38 be Bxc3 39 Wei 2xb3 40 e6 2b2 41 e7 Axe7 42 Axe7 b3 43 Ac5 f c6 44 Ag2 Bxc2 45 Wei Bxc5 46 de ©b5 47 f?d8 r sLT7 48 Bel 1:0
Game 48
Moscow t.'h 1984 1 e4 c5 ,2 f4 g6 [Antoshin-Georgadze, Nikolaev 1983 went 2 ... ©c6 3 ©f3 g6 4 d3 Ag7 5 c3 ©16 6 Ae20-0 7 0-0 c4 8 e5 cd 9 Axd3, ©e8 10 We2 d6 11 h3 ©c7 12 Mdl Ad7' 13 ©a3 with White having a slight space advantage.) 3 ©f3 Ag7 4 c3 ©16 5 d3 d6 6 Wc2 0-0 7 Ae21)6 8 0-0 Ab7 9 15 c4
Game 46
USSR Ch 1979 1 e4 c5 2 g3 ©c6 3 Ag2 g6 4 d3 Ag7 514 d6 6 ©f3 e6 7 0-0 ©ge7 8 e3 0-0 9 Ae3 b6 10 An»d7 11 Bel h6 12d4cd 13cd Ab7J4 ©c3 *h7 15 h4 2ae8 16 Ah3 15 17 h5 gh 18 .15 ed 19 ef ©xf5 20 2xe8 WxeH 21 Axf5 Exf5 22 Wc2 Ae8 23 Eel Wd7 24 ©h4 *g8 25 ©xf5 Wxf5 26 Wxf5 Axl5 27 ©xd5 &C7 28 Scl Ad7 29 h3 Ab2 30 Ec2 A16 31 b4 Ad8 32 b5 ©a5 33 a4 A15 34 2c3 ©b7 35 ©b4 ©c5 36 ©c6 A16 37 Ad4 ©xa4 38 2a3 Ac 2 39 A*f6 &xf6 40 ©1)4 Adl 41 ©d5+ 1:0
xw WW ii
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