We were trying that, Willempie. I think 64...Kc5 now (of course 64...b3 65 Rb8 Rb7 66 Rxb7 draws as you no doubt observed). White's trouble is that he has to go g6 to get any play, and then he's vulnerable to simply losing this pawn.

Say 65 g6 Rb7 66 g7 Kb5, for example.

Or 66 Rf8 Rg7 67 Rf6 b3 and so on. Actually in this line maybe 67 Rf5+ is a saviour. 67...Kc4 68 Rf6 b3 (68...Kc5 69 Rf5+) 69 Rb6 b3 70 Kf3 Kc3 71 Kg4 b2 72 Kg5 and White is just in time.

Hmm. I'll have a better try with a board at lunchtime. 64 g5 was our main try but I can't remember the lines now.

Since I want to show off, that I can make diagrams as well

http://www.france-echecs.com/diagramme/imgboard.phpfen=6R1/5r2/2k5/6P1/7p/1p5P/6...
This would be the position after 64.g5 in my quoted line

I may be missing something very obvious, but why would the line 60...Ke7 61 Rg6 Kd7 62 Rxg5 Kc6 63 Rg8 Rf7 be winning?
Looks like 64.g5 would draw.

Thanks, Alias. Right, in that case I have completely forgotten the move numbering. The point I mean is the one at which Topalov played ...Rf4-c4 when Leko's rook was on b6 and his king on g2, and the pawns h3/g4 against h4/g5. I didn't really understand the idea of this move, releasing the king. I also thought Topalov gave the draw rather easily at this point where he was being checked in your diagram. I thought he ought to have aimed to come back to c6 and then meet Rg8 with ...Kd7, the plan being to come back with the king to attack the g-pawn, play Rc3 xh3 and try to set up a winning h-pawn position with the White king on the far side of the world. I couldn't work it out but it was very close.

Also it was interesting to think about coming down the a-file with the king and taking the rook back to stop the g-pawn laterally at some moment, although Black seemed to hold against that.

We should have a thread on this endgame. I can't help feeling two of the world's best mishandled a theoretically drawn endgame in pretty much the same sort of fashion as you'd see in a London League blitz finish. I'm fairly sure Topalov could have won by 60...Ke7 61 Rg6 Kd7 62 Rxg5 Kc6 63 Rg8 Rf7 (pointed out by Rustemov on ICC) and Leko surely must have had better set-ups earlier, although it's not so simple as one would like. Maybe g4 earlier before ...h5?

And surely Leko should not have let the position at move 60 arise. It's all very well cutting the king off one rank lower but I'm not sure it really makes a difference: it also makes a difference if your rook isn't hitting g5, so that Black's king gets to the c-file before you can get back. If the rook were on b5 instead and Black's king on f6 then ...Ke6; Rxg5 Kd6; Rb5 Kc6; Rb8 would save a tempo for White, although I'm not sure whether that makes any difference. The king is so terrible on g2 because it stymies the g-pawn; after Rf7 g5 is always met by just ...Rg7 winning the pawn.

Having said that, it's clear this ending isn't half so drawn as I for one thought when it arose.

Anyone care to post a diagram and the moves (sorry I am too stupid to master this technique).