Author: Sune Larsson
Date: 17:30:23 03/07/01
Go up one level in this thread
On March 07, 2001 at 20:10:13, John Merlino wrote: >On March 07, 2001 at 18:08:04, Sune Larsson wrote: > >> >> [D]8/5p2/6PR/7P/1k6/p7/7r/1K6 w - - 0 1 >> >> Okey, some programs were very fast on the previous one, which was >> a bit shortened. I was fooled by Fritz who just saw a draw after >> more than 13 minutes, therefore decided to make it a bit easier. >> This study is proved correct since the ending KQ-KRP was a forced >> mate in a multitude of moves. >> Now something to chew on for you fast drawers! No compromises any more. >> This is the real stuff: >> >> Test: White to move and win. Nothing else counts. >> The ultimate solution further down. >> >> >> Sune >> >> >> >> >> >> >> >>Mozes,L >>1975 >> >>1.g7 [1.gxf7? Rf2] 1...a2+! 2.Ka1 Ka3 3.Ra6+ Kb3 4.Rb6+ Ka3 5.Rb1 axb1Q+ 6.Kxb1 >>Kb3 7.Kc1 Kc3 8.Kd1 Kd3 9.Ke1 Ke3 10.Kf1 Kf3 11.g8Q Rh1+ 12.Qg1 Rxg1+ 13.Kxg1 >>Kg4 14.h6 1-0 > >CM8000, on a P3-600 with a 32MB hash table and selective search=12, finds it in >just over 31 minutes: Wow, that is good! I actually thought the original study was too hard... But, looks like I've been shot down once more. :) Sune > >Time Depth Score Positions Moves >0:00 1/6 0.00 50642 1. g7 a2+ 2. Ka1 Kb3 3. Rb6+ Ka3 > 4. Ra6+ Kb3 5. Rb6+ >0:01 1/6 0.52 65200 1. gxf7 Rh1+ 2. Kc2 Rh2+ 3. Kd3 > Rf2 4. Rb6+ Ka4 5. Ra6+ Kb3 6. > Ra7 a2 7. Rb7+ Ka3 >0:01 1/7 0.39 88394 1. gxf7 Rh1+ 2. Kc2 Rh2+ 3. Kd3 > Rf2 4. Rb6+ Ka4 5. h6 Rxf7 6. Ra6+ > Kb3 7. Ra8 >0:02 1/8 0.36 144882 1. gxf7 Rh1+ 2. Kc2 Rh2+ 3. Kd3 > Rf2 4. Rb6+ Ka4 5. h6 Rxf7 6. Rb8 > Rd7+ 7. Kc3 Rc7+ 8. Kd4 >0:04 2/9 0.49 326298 1. gxf7 Rf2 2. Rb6+ Ka4 3. Ka1 > Rxf7 4. h6 Rf2 5. Rb8 Rf1+ 6. Rb1 > Rf2 >0:06 3/10 0.52 551596 1. gxf7 Rf2 2. Rb6+ Ka4 3. Ka1 > Rxf7 4. h6 Rf2 5. Rb8 Rh2 6. Ra8+ > Kb3 >0:11 4/11 0.57 979268 1. gxf7 Rf2 2. Rb6+ Ka4 3. Ka1 > Rxf7 4. Rb1 Rf2 5. Rh1 Kb3 6. Rh3+ > Kb4 7. h6 >0:22 5/12 0.60 2088917 1. gxf7 Rf2 2. Rb6+ Ka4 3. Ka1 > Rxf7 4. Rb1 Rf2 5. Rh1 Kb3 6. Rh3+ > Kb4 7. h6 Rf1+ 8. Ka2 Rf2+ 9. Kb1 >1:14 6/13 0.27 7034317 1. gxf7 Rf2 2. Rb6+ Ka4 3. Ka1 > Rxf7 4. Rb1 Rf2 5. Rh1 Kb3 6. Rh3+ > Kb4 7. h6 Rf1+ 8. Ka2 Rf2+ 9. Kb1 > Rf1+ 10. Kc2 >2:05 7/14 0.00 12440341 1. gxf7 Rf2 2. Rb6+ Ka4 3. Ka1 > Rxf7 4. Rb1 Rf2 5. Rh1 Kb3 6. Rh3+ > Kb4 7. h6 Rf1+ 8. Ka2 Rf2+ 9. Kb1 > Rf1+ 10. Ka2 >31:05 7/14 1.36 158465914 1. g7 a2+ 2. Ka1 Kb3 3. Rb6+ Ka3 > 4. Rb1 axb1=Q+ 5. Kxb1 Kb3 6. Kc1 > Kc3 7. Kd1 Kd3 8. Ke1 Ke3 9. Kf1 > Rxh5 10. g8=Q f5 >54:10 8/15 1.30 274404799 1. g7 a2+ 2. Ka1 Kb3 3. Rb6+ Ka3 > 4. Rb1 axb1=Q+ 5. Kxb1 Kb3 6. Kc1 > Kc3 7. Kd1 Kd3 8. Ke1 Ke3 9. Kf1 > Rxh5 10. g8=Q Rf5+ 11. Ke1 Ke4 > >jm
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