Author: William Sprague
Date: 20:59:31 11/13/01
Go up one level in this thread
On November 13, 2001 at 23:35:00, Chessfun wrote: >On November 13, 2001 at 23:13:43, William Sprague wrote: > >>On November 13, 2001 at 23:01:34, John Merlino wrote: >> >>>On November 13, 2001 at 19:53:14, John Merlino wrote: >>> >>>>Here's a position from a game the 1988 US Championship in Cambridge Springs. Of >>>>special interest, note the move number. >>>> >>>>[D]rn3r1k/ppBnN1p1/2p1p3/6Np/q2bP1b1/3B4/PPP3PP/R2Q1R1K w - - 0 17 >>>> >>> >>>Ok. It appears to really be a Mate in 10. My original post was using the default >>>personality. Sorry about that! >>> >>>Here's the report from an SS=12, 32MB personality (PIII-600): >>> >>>Time Depth Score Positions Moves >>>0:00 1/3 2.36 4894 17. Rxf8+ Nxf8 18. Nf7+ Kh7 19. >>> e5+ g6 20. Qd2 Kg7 21. Rf1 Bf5 >>> 22. Nxf5+ exf5 >>>0:00 1/3 2.52 7750 17. Ng6+ Kg8 18. Rxf8+ Nxf8 19. >>> Ne7+ Kh8 20. Nf7+ Kh7 21. e5+ g6 >>> 22. Qd2 Kg7 23. Rf1 >>>0:00 1/4 2.36 21760 17. Ng6+ Kg8 18. Rxf8+ Nxf8 19. >>> Ne7+ Kh8 20. Nf7+ Kh7 21. e5+ g6 >>> 22. Qd2 Kg7 23. Rf1 Bf5 24. Nxf5+ >>> exf5 >>>0:01 1/5 4.58 99311 17. Ng6+ Kg8 18. Rxf8+ Nxf8 19. >>> Ne7+ Kh8 20. Qf1 Nbd7 21. Qf7 Nf6 >>> 22. e5 Bf5 23. exf6 >>>0:03 1/6 6.40 248761 17. Ng6+ Kg8 18. Rxf8+ Nxf8 19. >>> Ne7+ Kh8 20. Qf1 Bf2 21. Qxf2 Nbd7 >>> 22. e5 g6 23. Nxg6+ Nxg6 24. Bxg6 >>>0:09 1/7 Mate14 701333 17. Ng6+ Kg8 18. Rxf8+ Nxf8 19. >>> Ne7+ Kh8 20. Nf7+ Kh7 21. e5+ g6 >>> 22. Qd2 Be3 23. Qxe3 Kg7 24. Qh6+ >>> Kxf7 25. Bxg6+ Nxg6 26. Nxg6 Qa3 >>> 27. Qh7+ Ke8 28. Qg8+ Qf8 29. Qxf8+ >>> Kd7 30. Qd8# >>>0:10 1/7 Mate12 797706 17. Rxf8+ Nxf8 18. Nf7+ Kh7 19. >>> e5+ g6 20. Qd2 Be3 21. Qxe3 Kg7 >>> 22. Qh6+ Kxf7 23. Bxg6+ Nxg6 24. >>> Nxg6 Qa3 25. Qh7+ Ke8 26. Qg8+ >>> Qf8 27. Qxf8+ Kd7 28. Qd8# >>>0:14 1/8 Mate11 1189940 17. Rxf8+ Nxf8 18. Qf1 Bf5 19. >>> exf5 Nbd7 20. fxe6 g6 21. Qf7 Nf6 >>> 22. Nxg6+ Nxg6 23. Qxg6 Rf8 24. >>> Qh6+ Kg8 25. Bh7+ Kh8 26. Qxf8+ >>> Ng8 27. Qxg8# >>>0:26 1/9 Mate10 2428429 17. Rxf8+ Nxf8 18. Qf1 Bf6 19. >>> Nf7+ Kh7 20. e5+ Qe4 21. Bxe4+ >>> Bf5 22. Bxf5+ g6 23. Bxg6+ Nxg6 >>> 24. Ng5+ Bxg5 25. Qf7+ Kh8 26. >>> Qg8# >>>0:48 1/10 Mate10 4781777 17. Rxf8+ Nxf8 18. Qf1 Bf6 19. >>> Nf7+ Kh7 20. e5+ Qe4 21. Bxe4+ >>> Bf5 22. Bxf5+ g6 23. Bxg6+ Nxg6 >>> 24. Ng5+ Bxg5 25. Qf7+ Kh8 26. >>> Qg8# >>> >>>jm >> >>John I did the test again running ss=12 (p4 1.3gig) default 1 meg >>Time Depth Score Positions Moves >>0:00 1/3 2.36 4849 1. Rxf8+ Nxf8 2. Nf7+ Kh7 3. e5+ >> g6 4. Qd2 Kg7 5. Rf1 Bf5 6. Nxf5+ >> exf5 >>0:00 1/3 2.52 7705 1. Ng6+ Kg8 2. Rxf8+ Nxf8 3. Ne7+ >> Kh8 4. Nf7+ Kh7 5. e5+ g6 6. Qd2 >> Kg7 7. Rf1 >>0:00 1/4 2.36 21725 1. Ng6+ Kg8 2. Rxf8+ Nxf8 3. Ne7+ >> Kh8 4. Nf7+ Kh7 5. e5+ g6 6. Qd2 >> Kg7 7. Rf1 Bf5 8. Nxf5+ exf5 >>0:01 1/5 4.58 98644 1. Ng6+ Kg8 2. Rxf8+ Nxf8 3. Ne7+ >> Kh8 4. Qf1 Nbd7 5. Qf7 Nf6 6. e5 >> Bf5 7. exf6 >>0:02 1/6 6.40 248972 1. Ng6+ Kg8 2. Rxf8+ Nxf8 3. Ne7+ >> Kh8 4. Qf1 Bf2 5. Qxf2 Nbd7 6. >> e5 g6 7. Nxg6+ Nxg6 8. Bxg6 >>0:06 1/7 Mate14 723251 1. Ng6+ Kg8 2. Rxf8+ Nxf8 3. Ne7+ >> Kh8 4. Nf7+ Kh7 5. e5+ g6 6. Qd2 >> Be3 7. Qxe3 Kg7 8. Qh6+ Kxf7 9. >> Bxg6+ Nxg6 10. Nxg6 Qa3 11. Qh7+ >> Ke8 12. Qg8+ Qf8 13. Qxf8+ Kd7 >> 14. Qd8# >>0:06 1/7 Mate13 825046 1. Rxf8+ Nxf8 2. Nf7+ Kh7 3. e5+ >> g6 4. Qd2 Be3 5. Qxe3 Kg7 6. Qh6+ >> Kxf7 7. Bxg6+ Nxg6 8. Qxg6+ Kxe7 >> 9. Bd6+ Kd8 10. Qf6+ Kc8 11. Qf8+ >> Kd7 12. Qe7+ Kc8 13. Qe8# >>0:09 1/8 Mate10 1151176 1. Rxf8+ Nxf8 2. Qf1 Bf6 3. Nf7+ >> Kh7 4. e5+ Qe4 5. Bxe4+ Bf5 6. >> Bxf5+ g6 7. Bxg6+ Nxg6 8. Ng5+ >> Bxg5 9. Qf7+ Kh8 10. Qg8# >>0:15 1/9 Mate10 2121087 1. Rxf8+ Nxf8 2. Qf1 Bf6 3. Nf7+ >> Kh7 4. e5+ Qe4 5. Bxe4+ Bf5 6. >> Bxf5+ g6 7. Bxg6+ Nxg6 8. Ng5+ >> Bxg5 9. Qf7+ Kh8 10. Qg8# >>Mate in 10 in 9 seconds >> >>Bill > > >Since John's line is; >0:26 1/9 Mate10 2428429 17. Rxf8+ Nxf8 18. Qf1 Bf6 19. > >And Bill's is; >0:09 1/8 Mate10 1151176 1. Rxf8+ Nxf8 2. Qf1 Bf6 3. Nf7+ > >And they both have the same settings. > >Why is the depth and therefore NPS different. >My own TB at 1.4 ghz SS12 32 mb hash >won't find this till depth 1/9 like John's in 19 seconds. >What ever way I work it 1/8 is always mate in 11. > >Can other CM users find this in 1/8? > >Sarah. Sarah I did the first test with a default of 1 meg - this test is 32 meg. ss=12 Time Depth Score Positions Moves 0:00 1/3 2.36 4849 1. Rxf8+ Nxf8 2. Nf7+ Kh7 3. e5+ g6 4. Qd2 Kg7 5. Rf1 Bf5 6. Nxf5+ exf5 0:00 1/3 2.52 7705 1. Ng6+ Kg8 2. Rxf8+ Nxf8 3. Ne7+ Kh8 4. Nf7+ Kh7 5. e5+ g6 6. Qd2 Kg7 7. Rf1 0:00 1/4 2.36 21725 1. Ng6+ Kg8 2. Rxf8+ Nxf8 3. Ne7+ Kh8 4. Nf7+ Kh7 5. e5+ g6 6. Qd2 Kg7 7. Rf1 Bf5 8. Nxf5+ exf5 0:01 1/5 4.58 98636 1. Ng6+ Kg8 2. Rxf8+ Nxf8 3. Ne7+ Kh8 4. Qf1 Nbd7 5. Qf7 Nf6 6. e5 Bf5 7. exf6 0:02 1/6 6.40 248383 1. Ng6+ Kg8 2. Rxf8+ Nxf8 3. Ne7+ Kh8 4. Qf1 Bf2 5. Qxf2 Nbd7 6. e5 g6 7. Nxg6+ Nxg6 8. Bxg6 0:06 1/7 Mate14 709593 1. Ng6+ Kg8 2. Rxf8+ Nxf8 3. Ne7+ Kh8 4. Nf7+ Kh7 5. e5+ g6 6. Qd2 Be3 7. Qxe3 Kg7 8. Qh6+ Kxf7 9. Bxg6+ Nxg6 10. Nxg6 Qa3 11. Qh7+ Ke8 12. Qg8+ Qf8 13. Qxf8+ Kd7 14. Qd8# 0:06 1/7 Mate12 806005 1. Rxf8+ Nxf8 2. Nf7+ Kh7 3. e5+ g6 4. Qd2 Be3 5. Qxe3 Kg7 6. Qh6+ Kxf7 7. Bxg6+ Nxg6 8. Nxg6 Qa3 9. Qh7+ Ke8 10. Qg8+ Qf8 11. Qxf8+ Kd7 12. Qd8# 0:09 1/8 Mate11 1194625 1. Rxf8+ Nxf8 2. Qf1 Bf5 3. exf5 Nbd7 4. fxe6 g6 5. Qf7 Nf6 6. Nxg6+ Nxg6 7. Qxg6 Rf8 8. Qh6+ Kg8 9. Bh7+ Kh8 10. Qxf8+ Ng8 11. Qxg8# 0:18 1/9 Mate10 2427702 1. Rxf8+ Nxf8 2. Qf1 Bf6 3. Nf7+ Kh7 4. e5+ Qe4 5. Bxe4+ Bf5 6. Bxf5+ g6 7. Bxg6+ Nxg6 8. Ng5+ Bxg5 9. Qf7+ Kh8 10. Qg8# 0:32 1/10 Mate10 4775354 1. Rxf8+ Nxf8 2. Qf1 Bf6 3. Nf7+ Kh7 4. e5+ Qe4 5. Bxe4+ Bf5 6. Bxf5+ g6 7. Bxg6+ Nxg6 8. Ng5+ Bxg5 9. Qf7+ Kh8 10. Qg8# 1:23 1/11 Mate10 12559675 1. Rxf8+ Nxf8 2. Qf1 Bf6 3. Nf7+ Kh7 4. e5+ Qe4 5. Bxe4+ Bf5 6. Bxf5+ g6 7. Bxg6+ Nxg6 8. Ng5+ Bxg5 9. Qf7+ Kh8 10. Qg8# So it looks like the 1 meg is much faster in this case. Bill
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