< Earlier Kibitzing · PAGE 29 OF 29 ·
|Aug-11-14|| ||Dionyseus: It turns out that 37.Be4 isn't even the best move. 37.Qb6 is better. |
After 37.Be4 Kasparov should have played 37...Rcb8, stopping white's queen from invading. Play might continue 38.Ra6 Qd8 39.Qa2 Rxa6 40.Qxa6 Bc7 41.Qe6+ Kh7 42.Ra6 Rb6 43.Rxb6 Bxb6+
click for larger view
And black should be able to hold this.
|Aug-19-14|| ||mendi80: About Zahl analysis and JamesMazur2, G4m3rz response.|
What about: 60.Rc8! Rb1 61.Kg3 Rb2 62.Kf3 h4 63.Rc4 Rc2 64.b5 Rb2 65.Rc6+ Kd5 66.Rc8 Rc3 67.Kg4 Ke4 68.Rc4+ Kd5 69.Rc7 Rxb5 70.c4+ Kd6 71.Rxg7 Rc5 72.Kxh4 e4 73.Kg4 Re5 74.Ra7 e3 75.Ra6+ and white win( engine say +3.10 )
|Nov-02-14|| ||first25plus5: I agree that 60.Rc8 looks very good. Thanks to mendi80. (It looks like there is a typing mistake in Black's move 66, should read 66....Rb3 as there is a pawn on c3.)|
|Nov-02-14|| ||Patanjali: At the end of the day, it would seem that IBM were prepared to cheat to turn the match in their favor. |
Key points of interest:
-Not granting the champ a rematch (when he gave them the courtesy of a rematch immediately after the '96 match)
-Not giving a demonstration to prove that DB could find/play the controversial moves on its own
-Dismantling DB immediately after the match
-Refusing to provide printouts of DB's "thinking" regarding the moves Kasparov thought were questionable.
-The 15% increase in stock value immediately following the match
-Claiming it was all for scientific R&D, but then winning and withdrawing from further "R&D"
-Employing Russian security to eavesdrop on Kasparov and his advisers/seconds
Conclusion? IBM cheated.
|Nov-03-14|| ||AylerKupp: <<Patanjali> Conclusion? IBM cheated.>|
Uncannily similar to the Spassky – Fischer 1972 WC match:
Key points of interest:
- Fischer not granting Spassky a rematch.
- Fischer not giving a demonstration to prove that he could force a draw after 29...Bxh2 in the first game of the match.
- Effectively retiring from play immediately after the match.
- Refusing to play in front of cameras when he had signed a contract to do so.
- The 100% increase in the prize fund prior to the start of the match in order for Fischer to play in the match, after previously agreeing to the prize fund.
- Claiming that he played for the good of chess, but then winning and withdrawing from further "play".
Conclusion? Fischer cheated. ;-)
|Nov-03-14|| ||first25plus5: 45....Qe3 46.Qxd6 Re8 47.Qd7+ Re7 48.Qc6 Qxe4 49.d6 Qd3+ 50.Kg1 Re8 51.Ra1 h5 52.Qxb5 Rd8 53.Qb7+ Kg8 54.Qe7 Qxd6 55.Qxd6 Rxd6 56.Ra8+ Kf7 57.Rc8 Rd1+ 58.Kh2 Ke7 59.Rxc4 Kd6.|
My conclusion on the 60.Rc8 line is that Black should actually now play 60....Rc1.
Then from what I have analysed, play 'should' proceed 61.Kg3 Kd5 62.b5 Rb1 63.Kf3 Rb3 64.g4.
I am looking at the 60.Kg3 line and see if I can make any contribution there, as well as the preference as to which one is better.
|Nov-05-14|| ||first25plus5: With regards to 60.Kg3 Kd5 61.Rc7 Ke4 62.b5 Rb1 63.c4 Kxf5 64.Rxg7 e4 etc, all I can add is Black's option of 64...Ke4 65.Rd7 Rb4.
Anyway I have all the necessary lines condensed onto a two page file. For those interested they can email me by looking at my profile email address. Cheers.|
|Nov-09-14|| ||first25plus5: I went back some moves and had a look at the line 49….Qxf5+ 50.Kg1 Rd7 51.Qxb5 Qe6 52.Qc5 Kg6 53.Rc6 e4 etc etc. I think White should now play 54.Qd4 then what would follow would be 54....e3 55.Qxc4 Qe5 56.Qg4+ Kh7 57.Qd4 Qxd4 58.cxd4.|
|Nov-02-15|| ||kamagong24: https://youtu.be/gDe-uHsEMn8|
|Apr-03-16|| ||first25plus5: I've done some further extensive work on the 62.b5 line. White is better to play 62.Kf3. I will post the 'main line'.|
|Apr-03-16|| ||first25plus5: Main line summary:
45...Qe3 46.Qxd6 Re8 47.Qd7+ Re7 48.Qc6 Qxe4 49.d6 Qd3+ 50.Kg1 Re8 51.Ra1 h5 52.Qxb5 Rd8 53.Qb7+ Kg8 54.Qe7 Qxd6 55.Qxd6 Rxd6 56.Ra8+ Kf7 57.Rc8 Rd1+ 58.Kh2 Ke7 59.Rxc4 Kd6 60.Rc8 Rc1 61.Kg3 Kd5
After the next White next move the next several moves can be transposed in parts but soon come to the same situation before continuing
62.Kf3 Rf1+ 63.Ke3 Re1+ 64.Kd3 e4+ 65.Kd2 Rg1 66.Rc5+ Kd6 67.Ke3 Re1+ 68.Kd4 e3 69.Kd3 e2 70.Kd2 Rb1 71.Kxe2 Rb2+ 72.Ke3 Rxg2 73.Kf3 Rg1 74.Kf4.
|Apr-11-16|| ||Howard: Excuse me....for those of us who aren't inclined right now to wade through a quagmire of 28 pages (so far) of commentary..|
...was the final position a draw or not ?
In fact, I just read on another website that the computer should have played 45.Qd7+.
Would that have won ?
What's the BOTTOM LINE ?
|Apr-11-16|| ||DWINS: Good question, <Howard>. I'd also like to know what the bottom line is.|
I let Stockfish 7 chew on it for a awhile. 45.Qd7+ seems to be better than 45.Ra6. As a matter of fact, 45.Ra6 didn't even make Stockfish's top four choices. I didn't do any forward/backward sliding, but I let Stockfish reach a depth of 37.
45.Qd7+ Kg8 46.Ra7 Bf8 47.Qf7+ Kh7 48.Ke2 Rd8 49.Qb7 Rb8 50.Qd7 Kh8 51.Qf7 Rd8 52.Qb7 Rb8 53.Qxb6 Rxb6 54.Ra8 Kg8 55.Bf3 g6 56.fxg6 f5 57.g4 fxg4 58.Bxg4 Rxg6 59.Kf3 (1.68)
I have no idea if the final position is a draw, but here's a quick analysis by Stockfish 7: 45...Qe3 46.Qxd6 Re8 47.Qc7+ Re7 48.Qc6 Qxe4 49.d6 Qxf5+ 50.Kg1 Rd7 51.Qxb5 Qe6 52.Qc5 Kg6 (0.78)
|Apr-15-16|| ||Howard: Anyone else care to contribute ?
Thanks, DWINS !
|Apr-29-16|| ||first25plus5: Regarding the quick analysis by Stockfish 7 mentioned on April-11-2016 - sideline 49....Qxf5+ etc is a sideline that keeps going with 53.Rc6 e4 54.Qd4 (54.b5 is also possible and is another line) and continues on. White is quite good. Black should instead play the 'main line' 49....Qd3+.|
|Apr-29-16|| ||first25plus5: Regarding the bottom line. I've just focused on helping find the moves. By doing this maybe a clear picture will emerge one day.
The 'main line' of Apr-03-2016 ends at an interesting junction point and it will be interesting to see where this eventually leads.|
|May-12-16|| ||VGA: According to the analysis it was not a drawing position if properly played by White. White had a slight advantage, so Kasparov should have pressed onwards but maybe he was tired, shaken or made a mistake and calculated his position as very bad.|
|Jul-25-16|| ||first25plus5: I've had a major upgrade in my computer so am able to analyse this much better. I currently now believe the 49...Bxf5+ line is what Black should play.
45...Qe3 46.Qxd6 Re8 47.Qd7+ Re7 48.Qc6 Qxe4 49.d6
49...Qxf5+ 50.Kg1 Rd7 51.Qxb5 Qe6 52.Qc5 Kg6 53.Rc6 e4 (which has been collated elsewhere).
But now its unclear where White should go to from here.
|Aug-09-16|| ||WorstPlayerEver: Still 26. f4 is a weird move for a computer; SF7 drops it.|
|Jan-24-17|| ||first25plus5: Correction on note Jul-25, it's 49...Qxf5+ (not Bishop takes).|
|May-03-17|| ||first25plus5: After twenty years -
45...Qe3 46.Qxd6 Re8 47.Qd7+ Re7 48.Qc6 Qxe4 49.d6 Qxf5+ 50.Kg1 Rd7 51.Qxb5 Qe6 52.Qc5 Kg6 53.Rc6 e4
|Jul-20-17|| ||first25plus5: Thanks to others it looks like 49...Qd3+ is the line now. I'll post a brief summation next week.|
|Jul-22-17|| ||dgontar: 37. Qb6 is not better than 37.Be4, Dionyseus. I analyzed several variations with my computer, Stockfish, and they resulted in draws, all of them. Here is one:|
37.Qb6 Rxa2 38.Rxa2 Ra8 39.Ra5 Qf8 40.Qxb5 e4 41.Kf1 Rb8 42.Qc6 Rc8 43.Qb6 Kh7 44.Qe3 Ra8 45.Bxe4 Be5 46.Qc5 Qb8 47.Qxc4 Rxa5 48.bxa5 Qb2 49.a6 Bxc3 50.Bd3 Bd4 51.Qc2 Qa1+ 52.Qb1 Qa5 53.Qe1 Qa4 54.g3 Qa2 55.Qe2 Qa1+ 56.Kg2 Qg1+ 57.Kf3 Be5 58.Qf2 Qd1+ 59.Ke3 Bc7 60.Qf1 Qb3 61.Qf3 Qb2 62.h4 Bd6 63.a7 Qb6+ 64.Ke2 Qxa7 65.Kf1 Kg8 66.Kg2 Qc5 67.Kh3 Qc3 68.Qe3 Kf8 69.Kg2 Be5 70.Qe4 Qd2+ 71.Be2 Qc3 72.Qf3 Ke7 73.Bd3 Kd6 74.Kh3 Qb3 75.Qe3 Ke7 76.Qe4 Kd6 77.Qf3 Kc5 78.Qe3+ Kd6 79.Kg2 Qxd5+ 80.Be4 Qc4 1/2-1/2
and if instead there is played 61.d6 you have 61...Qb6+ 62.Ke2 Qxd6 63.Qf4 Qb6 64.Qg4 Qc6 65.Qe4 Qb6 66.Qb7 Qxb7 67.axb7 Bxg3 68.h4 1/2-1/2
and in another variation 37. Be4 resulted in victory.
37.Be4 Qd8 38.Kh2 Rcb8 39.Ra6 Kf8 40.Ra7 Rxa7 41.Qxa7 Rb6 42.Qa8 Bb8 43.Ra7 Qe8 44.Ra6 Rxa6 45.Qxa6 Qd7 46.Qe6 Qe8 47.Kg3 Bc7 48.Kf2 Qd8 49.Ke3 Qb8 50.Ke2 Qe8 51.Qa6 Qb8 52.d6 Bxd6 53.Bb7 e4 54.Qxb5 Be5 55.Qc5+ Bd6 56.Qd5 Bg3 57.Ba6 Qe5 58.Bxc4 Ke7 59.Qf7+ Kd6 60.Qg8 Kc6 61.Qc8+ Kb6 62.Qa6+ Kc7 63.Be6 Qd6 64.Qa7+ Kd8 65.Qa8+ Kc7 66.Qxe4 Be5 67.Qc4+ Kd8 68.Bd5 Qd7 69.g4 Qc7 70.Kd3 Qd7 71.b5 Bc7 72.Kc2 Bb6 73.Bc6 Qe7 74.h4 Bf2 75.Bf3 Qd7 76.Qb4 Qe7 77.Qa5+ Qc7 78.Qa8+ Qc8 79.Qa2 Qd7 80.Bc6 Qe7 81.Qa5+ Kc8 82.Qa6+ Kc7 83.Qb7+ Kd6 84.Qb8+ Qc7 85.Qa8 Kc5 86.h5 Be3 87.Qa3+ Kb6 88.c4 Qh2+ 89.Kb3 Qb8 90.Bf3 Qc7 91.Qa6+ Kc5 92.Bb7 Bf2 93.Qa7+ Qb6 94.Qa3+ Kd4 95.Qe7 Kd3 96.Qe4+ Kd2 97.Qd5+ Bd4 98.Kb4 Qa7 99.Ba6 Ke1 100.c5 Be3 101.Qc4 Kf2 102.b6 Qe7 103.b7 Qe5 104.Qe2+ Kg3 105.Qxe3+ 1-0
and that seems to refute your claim about Rcb8, although your move is played 1 move earlier than in my variation.
|Jul-22-17|| ||dgontar: my computer analyzed one variation of 37...Rcb8 to a draw but I doubt this holds in all variations and with best play on both sides I think there is a win for white. |
37...Rcb8 38.Ra6 Qd8 39.Kh2 Kf8 40.Ra7 Rxa7 41.Qxa7 Rb6 42.Qa8 Bb8 43.Ra6 h5 44.Ra7 h4 45.Rb7 Rxb7 46.Qxb7 Qe8 47.Qb6 Ke7 48.Qf2 Bd6 49.Qxh4 Qa8 50.Qe1 Qa7 51.Qe2 Qb6 52.g3 Ke8 53.h4 Kf8 54.Qe1 Ke7 55.Kg2 Ke8 56.Qe2 Ke7 57.Qg4 Kf7 58.Qh5+ Kg8 59.Qe2 Bb8 60.Qd2 Kf8 61.h5 Kg8 62.h6 Qd8 63.hxg7 Kxg7 64.Qd1 Qe7 65.Qg4+ Kf8 66.Qh5 Kg7 67.d6 Qxd6 68.Kh3 Qe7 69.Bd5 Qf8 70.Qg6+ Kh8 71.Be4 Ba7 72.Qh5+ Kg7 73.Bc6 Qh8 74.Qxh8+ Kxh8 75.Bxb5 Kg7 76.Bxc4 Kf8 77.Bd5 Be3 78.Kh4 Bf2 79.Bf3 Ke7 80.c4 Be1 81.b5 Bf2 82.Be4 Kd6 83.Kh5 Bxg3 84.b6 Bf2 85.b7 Ba7 86.c5+ Ke7 87.Kg6 Bb8 88.Kg7 Bc7 89.Bf3 e4 90.Bxe4 Be5 91.Bd5 Bb8 92.Kg6 Ba7 93.Be4 Bb8 94.Bh1 Ba7 95.Kg7 Bb8 96.Bg2 Bf4 97.Kh7 Bb8 98.Bc6 Be5 99.Kg7 Bg3 100.Kh6 Bb8 101.Bg2 Ba7 102.Bd5 Kd7 103.Kg7 Ke7 104.Be4 Bb8 105.Kg6 1/2-1/2
but if instead white plays in this variation 54. g4 there is a win.
54.g4 Bb8 (54...Be7 55.Qd2 Ke8 56.Kg2 Kf8 57.g5 fxg5 58.hxg5 Qd8 59.f6! )
55.g5 Ke7 56.Kh3 Ba7 57.Qg2 Qe3+ 58.Kg4 Bb8 59.d6+ Bxd6 60.Kh5 Kf8 61.Bc6 e4 62.Bxb5 Qf3+ 63.Qg4
|Jul-26-17|| ||first25plus5: Final game position:
After analysis elsewhere, I'm convinced at a draw after spending time going through it myself.
45...Qe3 46.Qxd6 Re8 47.Qd7+ Re7 48.Qc6 Qxe4 49.d6 Qd3+ 50.Kg1 Re8 51.Ra1 h5
is the way. All subsequent lines have been deeply analysed to draws. I have collated it all into a file.
< Earlier Kibitzing · PAGE 29 OF 29 ·