Author: Dan Ellwein
Date: 05:00:37 04/28/02
Go up one level in this thread
On April 27, 2002 at 18:12:27, Uri Blass wrote: >The following position is from my last game > >[D]6k1/RR4p1/5p1p/4p3/8/P7/4rrPP/3K4 b - - 0 31 > >I played 31...Rxg2 and after 32.a4 Ra2 my opponent resigned. on a Celeron 400 Mhz computer CMLite finds ...Rxg2 in 12 min 17 sec... (approx 29,000,000 positions) Time Depth Score Positions Moves 0:03 1/6 -0.71 112253 1...Rd2+ 2. Kc1 Rc2+ 3. Kb1 Kh8 4. Rxg7 Rb2+ 5. Kc1 Rxg2 6. Rxg2 Rxg2 7. a4 Rxh2 0:05 1/7 -0.62 206589 1...Rd2+ 2. Kc1 Rc2+ 3. Kb1 Kh8 4. Rxg7 Rb2+ 5. Kc1 Rxg2 6. Rxg2 Rxg2 7. a4 Rxh2 8. a5 0:09 1/8 -0.80 349868 1...Rd2+ 2. Kc1 Rc2+ 3. Kb1 Kh8 4. Ra8+ Kh7 5. Raa7 h5 6. Rxg7+ Kh6 7. Raf7 Rce2 8. Rh7+ Kg5 0:21 1/9 -0.71 791856 1...Rd2+ 2. Kc1 Rc2+ 3. Kb1 Kh8 4. Rxg7 Rb2+ 5. Kc1 Rfc2+ 6. Kd1 Rxg2 7. Rxg2 Rxg2 8. a4 Ra2 9. Rf7 Rxa4 10. Rxf6 0:44 1/10 -0.65 1669886 1...Rd2+ 2. Kc1 Rc2+ 3. Kb1 Kh8 4. Rxg7 Rb2+ 5. Kc1 Rfc2+ 6. Kd1 Rxg2 7. Rxg2 Rxg2 8. a4 Rxh2 9. Rf7 Rh1+ 10. Kd2 1:25 2/11 -0.69 3332657 1...Rd2+ 2. Kc1 Rc2+ 3. Kb1 Kh8 4. Rxg7 Rb2+ 5. Kc1 Rfc2+ 6. Kd1 Rxg2 7. Rxg2 Rxg2 8. a4 Ra2 9. a5 Kg8 10. a6 f5 3:50 3/12 -0.60 8566773 1...Rd2+ 2. Kc1 Rc2+ 3. Kb1 Kh8 4. Rxg7 Rb2+ 5. Kc1 Rfc2+ 6. Kd1 Rxg2 7. Rxg2 Rxg2 8. Rf7 Rf2 9. a4 Kg8 10. Rd7 f5 12:17 3/12 -1.45 29353535 1...Rxg2 2. Rxg7+ Rxg7 3. Rxg7+ Kxg7 4. Kxe2 Kf7 5. a4 Ke7 6. a5 Kd8 7. Kd3 Kc7 8. Ke4 Kb7 9. h4 > >After the game he said that he needed one more tempo. > >I said that I was lucky because I saw the idea of Rxg7+ that almost win the game >only after I played 31...Rxg2. > >I played 31...Rxg2 fast because the move seemed to be almost forced(I did not >like the idea of Rd2+ Kc1 and the idea of Ra2 with the double mate threat is >gone) > >I also said in the anlaysis that the best was still 32.Rxg7+ Rxg7 33.Ra8+ >inspite of the fact that white is losing after 33...Kf7 34.Kxe2 Rg2+ because in >the worst case black will need to sacrifice the rook for the a pawn when the >black passed pawns are going to be srtronger than the rook. > > >I find that some top programs cannot find 31...Rxg2 >for black because they do not evaluate correctly the pawn endgame. > > >Uri
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