Roth, Jürgen Eugen - Mack, Wolfgang
Oblg.Biberach-Tübingen 1.Br., 11/28/2010
Round 4

1.d4 g6 2.e4 Lg7 3.Sc3 d6 4.Le3 a6 5.f4 b5 6.Ld3 Lb7 7.Sf3 Sf6
	[7...b4 8.Se2 Sf6 9.Sg3 Sbd7 10.a3 a5 11.c3 bxc3 12.bxc3 O-O 13.Tb1 Sb6 14.c4 La6 15.Tc1 c5 16.dxc5 dxc5 17.h3 Sa4 18.Dc2 Tb8 19.Le2 Sc3 20.Lf1 Lb7 21.Ld3 Sa4 22.O-O Lc6 23.Se5 Le8 24.Tb1 h5 25.Se2 Sh7 26.Txb8 Dxb8 27.Tb1 Dc7 28.Ld2 Lxe5 29.fxe5 Lc6 30.Lh6 Dxe5 31.Lxf8 Sxf8 32.Dd2 Se6 33.Dxa5 Sb2 34.Db6 Sxd3 35.Dxc6 Sd4 36.Sxd4 Dxd4+ 37.Kh2 De5+ 38.Kg1 Dd4+ 39.Kh2 1/2-1/2 Palac,M (2563)-Chatalbashev,B (2561)/Zagreb 2010/CBM 135 Extra]
8.a3 selten gespielt. 8...Sbd7 9.e5
	[9.O-O e6 10.De2 O-O 11.e5 Sd5 12.Sxd5 Lxd5 13.c4 bxc4 14.Lxc4 Lxc4 15.Dxc4 Sb6 16.Dc6 Sd5 17.Ld2 Db8 18.Tfc1 Lh6 19.g3 Db3 20.Lc3 Db5 21.Dxb5 axb5 22.Lb4 Tfd8 23.Sd2??
		(23.Le1)
	23...Sxb4 24.axb4 Txa1 25.Txa1 dxe5 26.Sf3 exd4 27.Td1 Lg7 28.Kf2 Ta8 29.Sxd4 Td8 30.Ke3 f5 31.Td3 e5??
		(31...Lxd4+ 32.Txd4 Td6)
	32.fxe5??
		(32.Sxb5! exf4+ 33.gxf4 Te8+)
	32...Lxe5 33.Sxb5 Tb8?
		(33...f4+!)
	34.Td5 Te8 35.Kf3 c6 36.Sd6 0-1 Stavropoulou,E (2500)-Efstathiou,D (2500)/ Nikea 2003/EXT 2005]
9...Sd5 10.Sxd5 Lxd5 11.O-O O-O
	[11...e6 12.De2 Db8 13.b3 Db7 14.Tae1 Le4 15.Lxe4 Dxe4 1/2-1/2 Stamenkovic,D (2423)-Crosa Coll, M (2403)/Sao Jose do Rio Preto 2007/CBM 118 ext]
12.c3
	[Aktiver ist 12.a4!? c5 13.dxc5 dxe5 14.Le2
		(14.Lxg6 Lxf3 15.Lxh7+ Kxh7 16.Dxf3 exf4 17.Dxf4)
	14...e6 15.axb5 axb5 16.Txa8 Dxa8 17.b4 Db8]
12...c5 13.exd6 c4! 14.Lc2 exd6 15.f5! Weiß muss sich schon um Ausgleich bemühen.
	[15.Te1 f5 16.Sg5 Sf6]
15...Sf6 16.fxg6 fxg6 17.Sg5 De7 18.Dd2 Tae8 1/2-1/2