**Quote:**@john simmons, @john cox;

I think black is still OK in the semi-Tarrasch with e4

I noted that Tal (who was on the receiving end in the cited game Polugajevsky-Tal 1969, in a later game followed Spassky-Petrosjan 1969 till move 16. There he improved and reached a reasonable position against Nogeiras (Brussels, 1988).

1.d4,Nf6 2.c4,e6 3.Nc3,d5 4.Nf3,c5 5.cxd,Nxd 6.e4,Nxc3 7.bxc, cxd 8.exd,Bb4+ 9.Bd2,Bxd2+ 10.Qxd2,0-0

11.Bc4,Nc6 12.0-0,b6 13,Rad1,Bb7 14.Rfe1,Rc8

15.d5!?,

15.......exd5 (15....Na5 led to Polugajevsky-Tal)

16.Bxd5, (16.exd,Na5 17.Bf1,Qd6 18.Ng5,Qh6 doesnt give white very much)

16.......,Qc7! (16....Na5 17.Qf4!,Qc7 18.Qf5! got black in trouble in Spassky-Petrosjan)

(an alternative might be 16...Qe7 17.Qf4,Rc7 unclear)

17.e5 , Ne7

(Nogeiras-Tal, Brussels 1988)

17 Qg5 h6 18 Qh5 with Nh4 to follow looks pretty desperate for Black.

I think I prefer Golod's approach. Preserving the tension in the center after 15 d5 deserves some attention:

[Event "ISR-chT"]

[Site "Israel"]

[Date "1996.??.??"]

[White "Tyomkin,Dimitri"]

[Black "Golod,Vitali"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 cxd4 8.cxd4 Bb4+ 9.Bd2 Bxd2+ 10.Qxd2 0-0 11.Bc4 Nc6 12.0-0 b6 13.Rad1 Bb7 14.Rfe1 Rc8 15.d5 Na5 16.Bd3 Qe7 17.Qf4 Rfd8 18.Bb1 Nc4 19.Nd4 e5 20.Nf5 Qf6 21.Qg3 1/2

[Event "Internet Section 11B g/8'+2""]

[Site "Dos Hermanas"]

[Date "2004.03.11"]

[White "Gozzoli,Yannick"]

[Black "Golod,Vitali"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 cxd4 8.cxd4 Bb4+ 9.Bd2 Bxd2+ 10.Qxd2 0-0 11.Bc4 Nc6 12.0-0 b6 13.Rad1 Bb7 14.Rfe1 Rc8 15.d5 Na5 16.Bd3 Qe7 17.Qf4 Rfd8 18.Rd2 h6 19.h3 Rc3 20.Red1 Rc5 21.dxe6 Qxe6 22.e5 Bxf3 23.Qxf3 Re8 24.Qe4 g6 25.f4 Nc4 26.Bxc4 Rxc4 27.Qf3 Qf5 28.Rd4 Rxd4 29.Rxd4 Qb1+ 30.Qd1 Qxd1+ 31.Rxd1 g5 32.g3 gxf4 33.gxf4 f6 34.exf6 1/2

[Event "EU-Cup 21st"]

[Site "Saint Vincent"]

[Date "2005.09.18"]

[White "Komarov,Dimitri"]

[Black "Golod,Vitali"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 cxd4 8.cxd4 Bb4+ 9.Bd2 Bxd2+ 10.Qxd2 0-0 11.Bc4 Nc6 12.0-0 b6 13.Rad1 Bb7 14.Rfe1 Rc8 15.d5 Na5 16.Bd3 Qe7 17.Qf4 Rfd8 18.h4 h6 19.Nd4 1/2