Smyslov_Fan wrote on 07/30/06 at 06:51:19:

Ostap,

Would you be able to go through the analysis and put up a few diagrams where you see fit? Thanks.

Looks like I have become the diagram-man in this thread; I'm happy to oblige.

I changed the move numbers to correspond to the game (incremented by 23 from the original post). This is just the 24...Rc4 analysis (the main part; there was also some analysis of 24...Kd7 in the original post). I added some line breaks/formatting to make it easier to read - and, of course, a few diagrams...

...this done, I might now have time to go through it myself.

**24...Rc4 25.Kd3 Kd7 26.b3**[26.Rxc4 bxc4+ 27.Kc3 Ra8 28.a3 Ra6=; 26.Rc3=]

**26...Rc6**[26...Rxc1 27.Rxc1 Ra8 28.Rc2 b4 29.Ke3 Ra6 (29...f6 30.f5 Re8 31.Kf4 fxe5+ 32.dxe5 b6!? (32...Rf8 33.Rc5 Ra8 34.Rb5 Kc6 35.Rxb4 Rxa2 36.fxe6 Ra8 37.Ke3+-) 33.Rc1 And Black appears to be in zugzwang. 33...Ra8?! 34.fxe6+ Kxe6 35.Rc6+ Ke7 White has several appealing options here, and I think it's just a matter of choosing between 36.Kf5, 36.Rxb6 or even 36.Rd6!? ) 30.g5 Rc6 31.Rxc6 bxc6]

**27.Rxc6** I wanted to test out this endgame. It's very complex, but I think Black barely draws. The analysis was fascinating for anyone who wants to study it.

**27...bxc6** **after 27...bxc6**

**28.Kc3**[28.a4 bxa4 29.bxa4 Rb8 30.Kc3 c5 31.dxc5 Kc6 32.Ra1 Kxc5= and Black has probably reached safety.]

**28...Ra8 29.Rh2**[29.Ra1 c5 30.dxc5 Kc6 31.Kb4 g6 32.Rh1 (32.a4? bxa4 33.bxa4 Rb8+=) 32...Rxa2 33.hxg6 fxg6 34.Rxh6 Rf2 35.f5 Rf4+ 36.Ka5 Kxc5=]

**29...c5 30.dxc5 Kc6 31.Kb4 Ra7 32.g5 Ra8 33.Rg2 Rf8 34.a3 d4 35.gxh6 gxh6 36.Rd2 Kd5 37.c6!** I found this and thought it was the winner. Fritz shows the win is difficult at best.

**after 37.c6!**

**37...Rc8 38.Kxb5 Rb8+ 39.Ka5 Kxc6 40.Rxd4 Rxb3 41.a4 Rh3** Fritz thought this was drawn. I'm not sure, but I think White is winning. It's hard though.

[Edit: as you see from my last word, a comment that I made stating that I'd found a win earlier is untrue. My latest is that if there is a win, it isn't in the lines I saw.] **42.Rc4+** **after 42.Rc4+**

**42...Kb7!**[42...Kd5 43.Rc7 Rxh5 44.Rxf7 Rh1 45.Kb6 Rb1+ 46.Kc7 Rc1+ 47.Kd8 Rc4 48.a5 Ra4 49.Rd7+ Ke4 50.Ke7 Kxf4 51.Kxe6 Rxa5

**after 51...Rxa5**

52.Rd5 Ra1 53.Kf6 Ke4 54.Rb5 Rf1+ 55.Ke7 Rf5 56.Kd6 h5!? Everything else also loses. 57.Rb4+ Kf3 58.e6+-]

**43.Kb5 Rxh5 44.Rd4**[44.Kc5= Rf5! (44...Kc7 45.a5! We'll see this theme again! 45...Rh1 46.Kb5+ Kb7 47.a6+ Kb8 48.a7+ Kxa7 49.Rc7+ Kb8 50.Rxf7 Rc1! 51.Re7 Rf1 (51...h5 52.Rxe6 Rf1 53.Kc6 Rxf4 54.Re8+ Ka7 55.Rh8) 52.Kc6 Rxf4 53.Re8+ Ka7 54.Rxe6 Re4 55.Re7+ Kb8+-) ]

**44...Kc7 45.a5! Rh1 46.Rc4+!? Kd7!** My German friend is no help whatsoever here.

**after 46...Kd7!**

[46...Kb7 47.a6+ Kb8 48.a7+ Kxa7 49.Rc7+ Kb8 50.Rxf7 Rc1 51.Re7 h5 52.Rxe6 Rf1 53.Kc6 Rxf4 54.Re8+ Ka7 55.Rh8+-]

**47.Rb4**[47.a6 Rb1+ 48.Kc5 (48.Ka5 Ra1+ 49.Kb6 Rb1+ 50.Ka7 h5 I can't honestly say whether this is winning. I have my doubts. Fritz happily chirps in that White has no worries. But there's nothing clear-cut here.) 48...Kc7 49.Rc2 h5 50.Rh2= Regardless of Fritz' optimism for White, this looks drawn.]

**47...Kc7 48.Ka6 h5 49.Ka7**[49.Rb7+ Kc6 50.Rxf7 h4 51.Rf6 Kd5 52.Ka7 (52.Rh6 h3 53.Kb7 h2=) 52...h3 53.a6 h2 54.Rh6 Ke4=]

**49...Ra1 50.a6 h4 51.Rc4+ Kd7 52.f5!?** This interesting idea is Fritz'. It gets only partial credit because it was down on its list of potential moves.

**after 52.f5!?**

**52...h3 53.Rh4 exf5 54.Rxh3 Ke6 55.Rb3 Kxe5 56.Rb5+ Ke4 57.Kb6** **after 57.Kb6**

**57…Rxa6+!**= No, Fritz doesn't know this trick.

**58.Kxa6 f4** is EQUAL