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OBIT - "At 9:21, after 1...Ra6 2. Kb5? is a significant error, allowing 2...Re6 - the moves to mate jumps from 15 to 21. Checking a tablebase, the fastest win starts with either 2. Qf1 or 2. Qc4. For example, 2. Qf1 Kb7 3. Qb5+ Ka7 4. Qb2 Rg6 5. Qf2 Rb6 6. Qd4 Rb7 7. Kc2 Kb8 8. Qa8+ Ka7 9. Qd8 reaches the Philidor position."
I think the problem with Kb5 is that the rook gains the e6 square. After Qf5 Kd7 the king is too far away to attack it. I'm not sure if I'm correct but it is interesting.
very good shanky:) nice video :)
Very Good Presentation. Appreciate it. It also shows that this Basic Mate requires lots of practice.
Thank you Sam. Your difficulty against the computer under audience scrutiny pressure game me understanding as to how Walter Browne could have lost a &1,000.00! Please follow this up with a video K+B+N vs. K mate. Would love your explanation.
Nice, but you should not have wasted our time playing against the computer and not knowing what to do. This video should have been planned out better and rerecorded.
I used to kind of know this ending, I knew of the Qf4-a4 maneovre but never fully tried to or did understand it. But now I do. Awesome video and I like your sense of humor!
Actually the position at 3:11 is far from being easy and probably deserves a whole video! Shredder gives 1.Qc6 Rh5 2.Ke4 Rh1(!?) 3.Qc7+ and either 3...Ke6 or 3...Ke8 and 4.Qg3(!) wins in 22!
Here is the way I understand this. Unlike the 3rd rank defense where W does have mating threats, here, it's not the case when fighting the 4 th rank defense. Thus at some point he must play waiting moves and while doing so he makes sure to take control of the checking squares B could otherwise use to improve.
Still I'm left wondering what to do in case of a 4th rank defense! :0) At least, the computer assesses the position as «mate in 21 move» at 2:50, which means that that 4th rank defense was not a real problem. What remains to be determined in my mind is how to overcome this. I doubt that Sam could do anything against the cut off on the 5th rank beacause, unlike the 3rd rank defense, he has no mate threat when the black king is on the 7th rank. My guess is that instead of (absolutly) going for the 8th rank he should have kept his options wide opened, either for the 8th rank OR the h-file. The point is that even if the black rook could not be driven off the 5th rank, it can not protect that same 5th rank AND the e-file for ever. In other words the black rook simply can't keep it's position on e5, which means that White would then have the opportunity to break away at some point. However, the «how to do» question is quite an important one. I hope that IM Sam Shankland to clarify this.
For the first time someone dares to commit deep in the mess! Thank you so much, Sam Shankland. Despite 1 or 2 slight inacuracies (which can be easily spotted by the interested viewer), you did a great job. I think that most of the strong players, coaches and teachers of all accabit are rather reluctant to treat of this complicated subjet. It is one thing to master this material, it is quite something else to teach it! You had the courage to dive in it and the result is quite impressive. Peace!
Excellent! Now next should be the R+P vs Q.
its my first time to watch chess on video
Nice video Though
I think I will need to look at this video a few more times. It's confusing.
Yes, thank you for pointing that our Eniamar!
MEMBERS!!! Many of you may not yet be aware of our new and ***AWESOME*** tool that allows you to play certain key positions from our video library against our Computer Workout. Watching the videos, jumping back and forth, and actually practicing the positions against the computer -- is an extremely effective way to improve... Enjoy!
At 9:21, after 1...Ra6 2. Kb5? is a significant error, allowing 2...Re6 - the moves to mate jumps from 15 to 21. Checking a tablebase, the fastest win starts with either 2. Qf1 or 2. Qc4. For example, 2. Qf1 Kb7 3. Qb5+ Ka7 4. Qb2 Rg6 5. Qf2 Rb6 6. Qd4 Rb7 7. Kc2 Kb8 8. Qa8+ Ka7 9. Qd8 reaches the Philidor position.
Man am I glad I didn't go into Q v R in my game against Nigel Short! See my blog for game. Silman in his Endgame course deliberately omits this as being too rare to be concerned with in the book. I wonder how many pages it would need. Anyway, thanks for showing this - very informative. I may need that 3rd rank defense. The 4th rank defense looks more wicked!
Next to the video you have the option to play the key position against the computer.
by GM Sam Shankland
Today IM Sam Shankland continues his display of how to win a Queen vs Rook ending. Here we see a "practical follow up" to the "technical Philidor position" covered in the first video. Reviewed is the infamous 3rd Rank Defense -- known for stumping some of the strongest Grandmasters --, several practice sessions with Shanky vs the computer, and finally a breakdown of the correct and efficient method required to win...
Related: « Previous Video in the Series
Video: The 3 Important Winning Techniques
Study Plan: The Endgame for Beginners
Study Plan: The Endgame for Intermediate Players
Chess Mentor: Essential Checkmate Patterns
Play Key Position Vs. Computer
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GM Sam Shankland
Sam learned chess at age 11 from the Berkeley Chess School program. Within four years, he had become a National Master, and two years later, he became an International Master when he tied for first in the world u-18 championship, a result unmatched in the last decade of international play by American players. At 20, he has already played in several U.S. Championships, placing 3rd in 2011.
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