Author: John Lowe
Date: 05:34:56 12/29/02
Go up one level in this thread
On December 29, 2002 at 08:29:18, Drexel,Michael wrote: >On December 29, 2002 at 08:14:27, Uri Blass wrote: > >>On December 29, 2002 at 07:51:25, Drexel,Michael wrote: >> >>>On December 29, 2002 at 05:45:00, John Lowe wrote: >>> >>>>On December 29, 2002 at 00:26:50, Les Fernandez wrote: >>>> >>>>>[D]4k3/8/8/8/8/2P5/1PPP4/4K3 w - - >>>>> >>>>>The above pawn structure to the best of my knowledge can't ever be reached since >>>>>the c3 pawn would have had to come from either b2-c2-d2. Are there alot of >>>>>these type of positions or are there a handful of pawn structures that we know >>>>>can't happen? Perhaps someone knows of a link that discusses this or can shed >>>>>"some" light as to what types of structures I can be made aware of. I am >>>>>working on an idea to increase our data in the C.A.P project for which an >>>>>understanding on reachable pawn positions is important. Any input that you can >>>>>provide me with would be deeply appreciated. It may be that there are so many >>>>>various scenario's that I might just have to leave out this portion of what I am >>>>>trying to do and just work with the other entities but I would prefer to work >>>>>pawns into my idea if possible. >>>>> >>>>>Thanks, >>>>> >>>>It is possible to get, within the rules - not the sensible game - a white pawn >>>>on a2,a3,a4,a5,a6 and a7 >>>> >>>>This will "cost" 15 captures leaving no capturable pieces for the g2 and h2 >>>>pawns. It will involve making king-side black pawns available for capture by >>>>sacrificing white pieces to them - it will take some analysis to discover how >>>>but my guess is that it can be done. >>>> >>>>Migrations bigger than this will be outside the rules. >>>> >>>>Does this help >>>> >>>>>Les ? >>>> >>>>Regards >>>> >>>>John >>> >>>Sorry John but this can not be done: >>> >>>[D] k7/P7/P7/P7/P7/P7/P7/K7 w - - 0 1 >>> >>>This pawn structure can not be reached within the rules. >>>The problem is: >>>you have not enough white pieces available in order to sacrifice them to make >>>all black king-side pawns available. >> >>It just happened in a game that I played against myself in 10 minutes >> >>Sorry for the low level of the moves but I am not good at blitz(;_ >> >>[Event "Edited game"] >>[Site "URI-PC"] >>[Date "2002.12.29"] >>[Round "-"] >>[White "-"] >>[Black "-"] >>[Result "*"] >> >>1. h4 a5 2. h5 a4 3. Nf3 a3 4. bxa3 b5 5. Rh3 b4 6. Nd4 b3 7. cxb3 Ra4 8. >>bxa4 c5 9. g3 c4 10. Bg2 c3 11. dxc3 Qa5 12. Bf3 Na6 13. Bg2 Nb4 14. cxb4 >>d5 15. bxa5 Nf6 16. Nb3 d4 17. g4 d3 18. exd3 Ba6 19. g5 Nxh5 20. Rg3 Bc4 >>21. dxc4 e5 22. Rh3 e4 23. Rg3 e3 24. fxe3 Bc5 25. Rh3 Nf6 26. Rg3 Bd4 27. >>exd4 Ke7 28. Bd2 Ne4 29. Bc1 Nxg5 30. Bd2 Ne4 31. Bc1 Nc5 32. dxc5 h5 33. >>Bd2 h4 34. Bc1 h3 35. Be3 h2 36. Bg1 h1=Q 37. N1d2 Rb8 38. Nf3 Rb6 39. cxb6 >>g5 40. Qb1 Kd7 41. Qb2 Kc8 42. Qb1 Kb7 43. Qb2 Ka8 44. Qb1 Qh8 45. Qb2 Qb8 >>46. Qb1 Qa7 47. bxa7 g4 48. Qd3 gxf3 49. Qd7 fxg2 50. Qb7+ Kxb7 51. Bf2 >>g1=Q+ 52. Kd2 Qxf2+ 53. Kd3 Qxg3+ 54. Kd2 f5 55. Rg1 Qxg1 56. Kc2 f4 57. >>Kd2 f3 58. Kc2 f2 59. Kd2 f1=Q 60. Kc2 Qc5 61. Kd2 Qb5 62. cxb5 Qf6 63. Kc2 >>Qe6 64. Kb2 Qxb3+ 65. Kc1 Qe6 66. Kb2 Qd6 67. Ka1 Qa6 68. bxa6+ Ka8 >>* >> >> >>Uri > >Nice game Uri, >just forgot the possibility to promote the pawns. at least it can not be reached >without promotion. > > >Michael Thanks Uri..... A good illustration of "You can't win by resigning!" See my other posting.... :( John
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.