Here is a vid from <kingscrucher> http://www.youtube.com/watch?v=TnJV...

By the way, if Ivanchuk flagged, how come he played the last move of the game? Surely that's not possible?

It's an interesting logical question whether such a move should be part of the official score. Since a move is not complete until the clock is stopped, did he actually make it?

Personally, I think it should be part of the record. After all, had it been been checkmate the move would have counted even if the clock was not stopped in time.>

Good puzzle

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White must follow 33...g4 with either 34 f4 or 34 fxg4.

<BOSTER> <I'd play 33...g4 34.f4 h3+ 35.Kh1 and now the main idea that knight
on d3 in the open file without protevtion
So, Rd7
If 36.Nxc5 Rd1+ 37.Kh2 Nxf4 and so on.>

<BOSTER> your line is good up to 35…Rd7, below.

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The knight cannot move however, because of the threat …Rd1+. White has to play 36 Rxc6 here.

If 36.Nxc5 Rd1+ 37.Kh2 Ng5!! wins.

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Does this mean that we can wait as long as you want (after the time control) with a mating move? I.e., that a player can run out of time, then 1 minute later finds that he has a mate in one, and plays it, and wins?

I.e. "just having a mate in one always wins, regardless of the clock".

Are the current rules like that?

Or it is rather so, that the player can be declared the loser on time forfeit, despite having a mating move that he clearly didn't make before the opponent claimed the win on time?

If so we have allowed for heated discussions on what came first: the time claim or an execution of a mating move, with the difference of a full point for either player. The winner: the one who shouts highest and is most unwilling to bow.

This is most unfortunate. Why allow that when there is a simple solution:

Make all moves, including a mating move within time, or you have lost.

This is well-defined, as the clock clearly shows if this happened. No discussion possible.

I always felt the purpose of organizing chess competences is to let the players play, concentrate on moves and nothing else. Writing moves and stopping clocks have nothing to do with the game itself.

The fact that a game result might depend on how fast your arm moves through the play strikes me as ludicrous. Today we have enough technology to create a board that both records moves and checks the time flag.

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or did he lose on time?

If White rushes ahead like a bull at a gate he can lose: 35.Kxg3 Nf4 36.Nxf4 gxf4+ 37.Kf2 Rg6 38.a4 Rff6 39.a5 Rh6 40.a6 Rh2+ 41.Kf1 Rg6 42.a7 Rh1+ 43.Ke2 Rg2+ 44.Kd3 Rd1#. Clearly White has much better but was the position resignable?