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SOS Game of the Month June

SEE FOR YOURSELF HOW AN SOS CAN SHOCK AND CONFUSE!
Every month, the editor of the SOS Secrets of Opening Surprises series, IM Jeroen Bosch, annotates a game which was recently played with an SOS-variation.
EO 64.8 (A13)
    
White player   Levan Pantsulaia
Black player   David Arutinian
 
 Tbilisi ch-GEO 2007 (6)
 
 Notes by Jeroen Bosch

In SOS-5 Adrian Mikhalchishin wrote about the Romanishin Gambit. In the 2007 Georgian Championship Levan Pantsulaia played an exciting game (which ended in a draw) against David Arutinian. Let's look at that game and take into account some other recent practical examples.

1.f3 f6 2.c4 e6 3.g3 a6 4.g2 b5

This is the so-called Romanishin Gambit. It is a gambit only after 5.d4 - a move that is not very popular as Black simply obtains too much compensation. See SOS-5 for the details.

5.b3

This quiet reaction is one of the main options.
A) 5.e5 c6 (stronger looks 5...d5) 6.b3 c7 7.d4 b4+ 8.d2 e7?! (8...xd2+) 9.c3 d6 10.d3 bxc4 11.bxc4 e5 12.d5 0-0 13.c1 b7 14.0-0 bd7 15.dxc6! xc6 16.d5 (with simple means White has gained a significant positional edge) 16...xd5 17.cxd5 b7 18.b4 d8 19.c6 b6 20.b4 c5 21.xc5 xc5 22.xe5 and White had won a pawn in Saatdjian-Zelcic, Cannes 2007;
B) 5.d3 b7 6.0-0 c5 7.e4 d6 8.bd2 c6 9.a4 bxc4 10.xc4 e7 11.a5 0-0 with about equal chances in Rahman-Reefat, Dhaka 2007;
C) 5.0-0 bxc4 6.e5?! (for 6.a4 see SOS-5) 6...d5 7.xc4 dxc4 (7...c5) 8.xa8 c6 9.d3 c7 10.a4 d5 11.xc4 (11.d2!? cxd3 12.exd3 b6?! 13.a5) 11...b6 12.f4 d6 13.xd6 xd6 14.b3 xa8 and the minor pieces were stronger than rook and pawn despite the fact that White has some additional positional compensation. Yagiz-Gelashvili, Athens 2006.

5...c5

Equally popular is 5...b7 (of course play after 5...c5 can easily transpose into lines after 5.. .b7 and vice versa) 6.c3 (this was Pantsulaia's choice earlier in the same Georgian Championship. White can also play 6.0-0 c5 7.b2 and now: 7...b6 (7...e7 8.d3 (8.c3 bxc4 9.bxc4 c6 was seen in some earlier Romanishin games) 8...0-0 9.bd2 d5 (9...c6) 10.e5 bd7 11.e3 xe5 12.xe5 d7 13.b2 f6 with equality in Kiss-Romanishin, Kavala 2006) 8.cxb5?! axb5 9.d4 d5 10.c3 bd7 11.e3 e7 12.dxc5 xc5 gave Black a strong central position in Grunberg-Ivanov, Bucharest 2007) 6...bxc4 (6...c6 has been played by Aronian, while Romanishin himself has preferred 6...b4 7.a4 d6) 7.bxc4 c5 8.b1 c6 9.0-0 e7 10.e1 (this was given in SOS-5 as slightly better for White. Therefore Black should concentrate on 6...c6 or 6...b4) 10...d6 11.e4 a5 12.e5! dxe5 13.xe5 xg2 14.xg2 0-0 15.f3 Now White was better in Pantsulaia-Gelazonia, Tbilisi 2007. Later he was worse, but he managed to upset the balance again and won in the end.

6.c3 b6

6...a5 has always been Romanishin's preference - see SOS-5.

7.0-0 b7 8.e1

A) 8.e3 e7 9.e2 e4 (9...c6!?) 10.xe4 xe4 11.d3 b7 12.b2 0-0 13.fd1 d6 14.d4 d7 15.ac1 bxc4 16.xc4 ac8 and Black's position is perhaps already slightly preferable as he has managed to exchange his b-pawn for White's c -pawn. Kern-Dautov, German Bundesliga 2006/2007.
B) 8.d3 c6 9.e4 d6 10.h3 e7 11.e3 0-0 12.b1 b4 13.a4 c7 14.e1 d7 15.c2 f6 was equal in Butnorius-Van Hoolandt, Dresden 2007.
 C) Nothing is gained by 8.d4 cxd4 9.xd4 xd4 10.xd4 xg2 11.xg2 b4 12.d2 c6= Gustafsson-Navara, Ermioni 2006.

8...d6

If 8...e7 then 9.e4 c6 10.e5

9.e4 c6 10.b2

More ambitious than 10.d3 e7 11.h3 d7 12.e3 f6 13.c1 0-0 14.h4 de5 15.xe5 xe5 16.d2 ½-½ Rahman-Kurajica, Turin Olympiad 2006.

10...d4

This is more ambitious than the solid 10...e7

11.xd4 cxd4 12.d5

A typical (Sicilian) sacrifice. White may also consider 12.e2 postponing the sacrifice of the knight until after 12...e5 13.xd4!? for example 13...exd4 14.e5 dxe5 15.xe5+ d8 16.c5 c7 17.xb7 xb7 18.xd4 with unclear play.

12...exd5 13.exd5+ e7 14.d3

A quiet positional continuation. Black is clearly taking over after the forcing 14.e2 0-0! (14...d8 15.xd4 f8¤) 15.xe7 ae8 16.xd4 xd4 17.xb7 g4 with a winning attack.

14...f8 15.a4 bxa4

White also has compensation after 15...b4 16.a5.

16.xa4 d7 17.h3 c7

17...c5!? 18.xd4 xb3 is hard to calculate behind the board - 19.a1. The text is natural.

18.xd4 f6 19.a1 h5!

Seeking employ for his h-rook.

20.a2 h4 21.xd7

This is best, but to some extent an admission of failure. All the light pieces are exchanged now.

21...xd4 22.xd4 xd7 23.ae2

Black is a (not too active) piece up. However, he cannot prevent the invasion of his second rank.

23...hxg3 24.fxg3 d8 25.e7! xe7 26.xe7 xe7 27.xg7

Now White has three pawns for the piece and Black's king's position is airy. Yet, it is only Black who can play for a win here.

27...de8 28.b4 h5 29.d4 c8 30.a7+ f8 31.h4 f5 32.d4 e1+ 33.g2 e2+ 34.g1 fe5 35.g4 g8 36.f1 5e3 37.h5

Now Black opted for a repetition with

37...e1+ 38.f2 1e2+ 39.f1 e1+ ½-½