Here is the analysis:

Lolli, 1763. 1.Qd4+ Ka8 [2...Kb8 3.Qd6+ Ka8 4.Qa3+ Kb8 5.Qa5] 3.Qh8+ Ka7 [3...Rb8 44.Qa1#] 4.Qd8 Ka6
[4...Rb8 45.Qa5#;
4...Rb6+ 5.Qxb6+ Ka8 6.Qb7#;
4...Rb5 5.Kxb5;
4...Rb4 5.Qa5+;
4...Rb3 5.Qd4+ Kb8 (5...Ka8 6.Qa4+) 6.Qf4+ Ka8 7.Qa4+;
4...Rb2 5.Qd4+;
4...Rb1 5.Qd4+ Ka8 6.Qh8+ Ka7 7.Qh7+;
4...Rf7 5.Qd4+ Ka8 6.Qa1+ Ra7 (6...Kb8 7.Qb2+ Ka8 8.Qa2+ Ra7 9.Qg8#) 7.Qh8#;
4...Rg7 5.Qd4+;
4...Rh7 5.Qd4+ Ka8 (5...Kb8 6.Qb4+ Ka7 7.Qa4+ Kb8 8.Qb3+ Ka7 9.Qa2+ Kb8 10.Qb1+) 6.Qa1+ Kb8 7.Qb1+] 5.Qa8+ Ra7 6.Qb8

Haha, I saw this in the other thread and couldn't figure out the study. Now it makes perfect sense! I like the way you drew the white queen.

This one is great

As a general note to viewers of this video: once we get some of our new ChessVideos.TV features rolled out, I'll be making a video that explains how to win these K + Q vs. K + R positions when then enemy king isn't already in the corner.

This is great but I can't get the position you talked about, a video showing how to do that would be nice.
I also read on some site (chessbase?) that a grandmaster had trouble in a KQ vs KR endgame and only won after forking the king and rook, a fork the opponent didn't see. (apparently its not easy is my point :P)

Yes, winning from the general position is really really hard. My main obstacle to making a video is that the positions are often really complicated and require a good deal of analysis of any specific position. That being said, I'll try to put together a video on this topic.

Josh,

Love the site. I'm a reasonably capable player with about 20 years of experience. However, I cannot force this position. I have tried this about 100 times against the Crafty replayer, and the engine finds a stalemate trick every time. Is there any chance you could make the work easier for yourself by breaking up the rest of this particular project into small videos explaining how to transition to this position? Any reply or update will be greatly appreciated.

86

Making a video about how to force this position is something I very much want to do, but I know it's very difficult (especially condensing the material into an easy to follow video). But, I think this is going to be my next project, since people are very interested in how to do it.

A year has passed... I still didn't get this end position though. Crafty moves the rook away BEFORE I can reach this position and there is no way I can fork it in that case because his king has enough/more space to manouvre, nor can I get closer with my king, because I either lose my queen or black checks my king from a safe distance until I walk over to it...
For example: white: Qh5 Ke6, black: Ra7 Kg8. White to move.

Good video, not sure how I missed it before, or I just forgot it. :-) Where's the video explaining how to move Black to the corner like that? As it seems like that might be harder than winning from there!

[quote="JoshSpecht"]Here is the analysis:

Lolli, 1763. 1.Qd4+ Ka8 [2...Kb8 3.Qd6+ Ka8 4.Qa3+ Kb8 5.Qa5] 3.Qh8+ Ka7 [3...Rb8 44.Qa1#] 4.Qd8 Ka6
[4...Rb8 45.Qa5#;
4...Rb6+ 5.Qxb6+ Ka8 6.Qb7#;
4...Rb5 5.Kxb5;
4...Rb4 5.Qa5+;
4...Rb3 5.Qd4+ Kb8 (5...Ka8 6.Qa4+) 6.Qf4+ Ka8 7.Qa4+;
4...Rb2 5.Qd4+;
4...Rb1 5.Qd4+ Ka8 6.Qh8+ Ka7 7.Qh7+;
4...Rf7 5.Qd4+ Ka8 6.Qa1+ Ra7 (6...Kb8 7.Qb2+ Ka8 8.Qa2+ Ra7 9.Qg8#) 7.Qh8#;
4...Rg7 5.Qd4+;
4...Rh7 5.Qd4+ Ka8 (5...Kb8 6.Qb4+ Ka7 7.Qa4+ Kb8 8.Qb3+ Ka7 9.Qa2+ Kb8 10.Qb1+) 6.Qa1+ Kb8 7.Qb1+] 5.Qa8+ Ra7 6.Qb8[/quote]


Great video, cristal clear explanations. I'm looking forward to the other vids explaining the rest of this K+Q vs K+R endgame .....

[quote="JoshSpecht"][quote="David"]This is great but I can't get the position you talked about, a video showing how to do that would be nice.
I also read on some site (chessbase?) that a grandmaster had trouble in a KQ vs KR endgame and only won after forking the king and rook, a fork the opponent didn't see. (apparently its not easy is my point :P)[/quote]

Yes, winning from the general position is really really hard. My main obstacle to making a video is that the positions are often really complicated and require a good deal of analysis of any specific position. That being said, I'll try to put together a video on this topic.[/quote]


All right ! Great !

I can't get in starting position either, regardless of time spent. The video was useful though, in encouraging me not to fret if I'm on the K+R side. I think even I could avoid the starting position for 50 moves.