**Akopian-Kir. Georgiev (DEM 9-166)**After 1…Ra1?! 2.Ra6! Ra2 3.a4 Ra3+?! 4.Kd4 Ra2 5.a5 f6

**Krakops-Dautov (reversed)**Dvoretsky gives win 6.Ra7+ Kh6 7.a6 g5 8.Ra8 gxh4? but I mentioned in gxh4 thread 8...Kg6! delaying h4 capture draws.

Dautov won with 6.f4 Ra3 7.Ra7+ Kh6 8.a6! g5 9.f5? gxh4 10.gxh4 Ra4+ 11.Kc5 Rxh4? 12.Ra8 Ra4 13.a7+-

Black could have drawn with 11…Rc4+! 12.Kd6 Rxh4= and 9…Rxg3 (? DEM) also draws 10.Ra8 Ra3 11.a7 Ra4+! (not 11…Kg7? 12.fxg5+-) 12.Kc3 gxh4! 13.Rh8+ Kg5=

Dvoretsky gives an earlier White win with 9.Ra8! gxh4 10.gxh4 Kg6 11.Kc5 Kf5 12.Kb6 Rb3+ 13.Ka7 Kxf4 14.Rb8 Ra3 15.Rb5! Kg4 16.Kb6+-

Here instead of 14…Ra3? there is 14…Re3! drawing but K-b6-a7? is wrong plan, White can exploit proximity of black rook

White wins by 12.Kb5! Ra1 (12…Kxf4 13.Rc8+-, 12…Kg4 13.Rg8+ Kxh4 14.f5 Rb3+ 15.Ka4 Rb1 16.Rg7+-, 12…Rb3+ 13.Ka4 Rb1 14.Rh8!+-)

13.Rh8! Rb1+ (13…Kg4 14.Rh6!+-) 14.Kc6 Rc1+ 15.Kb7 Rb1+ 16.Ka8 Kg4 17.a7 Kxh4 18.Rb8 Ra1 19.Rb6 f5 20.Kb7+-

However Black can improve even earlier. First lets look at a slightly different move order 6.Ra7+ Kh6 7.f4

Now 7…Ra3? leads to 8.a6! g5 9.Ra8! loss above so lets try 7…g5 immediately since if 8.a6 or 8.Ra8 then 8…gxh4 9.gxh4 Kg6= (saved tempo on Ra2-a3 and Ra2 further away from WK)

After 8.hxg5+ (8.f5 gxh4 9.gxh4 Ra4+=) fxg5 9.fxg5+ (9.f5 h4! draws) Kxg5 tablebase gives 10.Kc4 winning

However instead of 9…Kxg5? Black plays 9…Kg6! (intending R-a3-xg3) 10.a6 Ra3 11.Ra8 Kg7! and White can only stop Rxg3= with 12.a7 but then he lacks f-pawn to deflect BK from g7/h7 so drawn

So Black needs to attack g3 but should advance g5 first and not recapture g5 doubled pawn since White can then defend g3 with Rg7/g8!

Therefore 6.f4 g5! (instead of 6…Ra3?) 7.hxg5 (7.f5 Ra3! 8.hxg5 fxg5 9.Rg6+ Kf7 10.Rxg5 Rxa5 11.Rxh5 Ra3=) fxg5 8.fxg5 (8.f5 h4!=) Ra3! draws

After 6.f4 g5! White can also try 7.Ke4 gxh4 8.gxh4 Rh2 9.Kf5 Rxh4 10.Ra7+ Kh6! 11.Ra8 Kg7 12.a6 when 12…Rh3! 13.Ra7+ Kh6 14.Kxf6 (14.Rf7 Ra3 15.Rxf6+ Kg7=) Rf3! 15.Kf5 Ra3 16.Ra8 h4 17.a7 Kg7 18.Kg4 h3 (guarded by Ra3!) draws

Or 9.Rb6 Rxh4 10.Rb7+ Kg6 11.Rb3 Rh1 12.Rg3+ Kf7 13.Ra3 Re1+ 14.Kf3 (14.Kf5 Re7 15.a6 Ra7 16.Ra2 Ke7 17.Re2+ Kf7 18.Re6 h4 19.Rxf6+ Kg7 20.Rg6+ Kf7 21.Rb6 h3=)

14... Re7 15.a6 Ra7 16.f5 (16.Kg3 f5=) Kg7 17.Kg3 Kh6 18.Kh4 looks like win by zugzwang but Black does not have to move king eg. 18…Rd7 19.a7?! Rxa7! 20.Rxa7 stalemate so drawn!

So the Dautov 6.f4 line, like Dvoretsky's 6.Ra7+ line, can be defended for a draw.