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#1
14.08.2018, 14:35
| Folgender Benutzer sagt Danke zu applechess für den nützlichen Beitrag: | ||
Wolfgang2 (15.08.2018) | ||
#2
15.08.2018, 13:23
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AW: Conny 3.6 Mhz
 Zitat von applechess
Hi Stefan
As mentioned by you, the move 45.Kc5?? was a terrible mistake. The endgame is indeed the weakest phase of these old computer programs. It's often possible to win endgames that are dead draw. Kurt It is to me not a pure endgame mistake which you typically recognise in an voluntary piece exchange into a lost endgame. An 8 bit program at no more then 4Mhz typically considers 7 up to 8 ply @ tournament play (3 minutes a move) The progam uses the shannon A Strategy, meaning he will calculate the whole tree. This takes time as the possibilities are on average x40 for every ply added. This is also a reason why I have such a bad score against the Turbostar (5 to 10%) . I believe the Turbostar 432 KSO has a A & B-strategy program and is a real frustration for me. It scans the tree for a few ply (3 to 4 A Strategy) and then makes a few deep dive considerations on the most promising variations like humans do (B-Stategy) in an attempt to eliminate the calculations of stupid/non-promising move considerations. Of course a sacrifice combination can be quickly overlooked (like a queen sacrifice to mate) as initially catalogued unpromising , therefore the whole variation may be quickly dropped. Either choice was a programmer choice back in the 70'ies , 80'ies and early 90'ies. https://chessprogramming.wikispaces.com/Type+A+Strategy https://chessprogramming.wikispaces.com/Type+B+Strategy Geändert von StefanT (15.08.2018 um 13:51 Uhr) 
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| Folgender Benutzer sagt Danke zu StefanT für den nützlichen Beitrag: | ||
applechess (15.08.2018) | ||
#3
15.08.2018, 13:44
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AW: Conny 3.6 Mhz
Zitat von StefanT
In general you are right, though in this case he missed an pure 8 ply combination. I believe it was a Horizon problem. He didn't scan the whole 8 play depth and missed this variation.
It is to me not a pure endgame mistake which you typically recognise in an voluntary piece exchange into a lost endgame. An 8 bit program at no more then 4Mhz typically considers 7 up to 8 ply. The progam uses the shannon A Strategy, meaning he will calculate the whole tree. This is also a reason why I have such a bad score against the Turbostar (5 to 10%) . I believe the Turbostar 432 KSO has a B-strategy program and is a real frustration for me. It scans the tree for a few ply (3 to 4) and then makes a few deep dive considerations on the most promising variations like humans do. https://chessprogramming.wikispaces.com/Type+A+Strategy https://chessprogramming.wikispaces.com/Type+B+Strategy You are a happy man ... whereas I am frustrated having given away my beloved Saitek Turbostar 432 KSO  Kurt
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#4
19.08.2018, 19:51
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AW: Conny 3.6 Mhz
Kurt hatte ich auch getan und Bedauert !
End 80er Jahre hatte mein Vater diese schachcomputer in Maastricht gekauft genauso wie der Conny 2.0 Mhz Das war damals doch wirklich ein tolles Geschenk von mein Vater und Mutti. Hier ein Spiel gegen mein Angstgegner. Es wird eine Partie Tartakower Eco D58 http://www.chessgames.com/perl/chessopening?eco=D58 Es gab eine gewisse streit mit doch ein paar schöne Züge von dem TS 432. Jedoch machte ich diesmal im Turmendspiel ein fehler mit 48 ... Ta3 ? aber glücklich nicht so schlimm das es zum verlust führte.
[Event "Home August 2018"]
[Site "b"] [Date "2018.08.19"] [Round "?"] [White "Turbostar 432 KSO, NB3."] [Black "Timmermans, Stefan"] [Result "1/2-1/2"] [ECO "D58"] [WhiteElo "1775"] [BlackElo "1837"] [Annotator ",T"] [PlyCount "166"] 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4 b6 8. Be2 Nbd7 {More often Bb7 is played} 9. cxd5 Nxd5 { Always had a preference to recapture with the Knight, despite the potential e4 push, as now the diagonal a8-h1 is better.} (9... exd5 10. O-O Bb7 11. Rc1 c5) 10. Bxe7 Qxe7 11. Nxd5 exd5 12. Rc1 Qb4+ (12... Nf6 13. Qc2 c6 14. Qxc6 $4 Bd7 15. Qc2 Rfc8 16. Qd1 Qb4+ $1 $19) 13. Qd2 Qxd2+ 14. Nxd2 c5 15. O-O (15. Bb5 Rb8 $14) 15... a6 16. dxc5 bxc5 $6 (16... Nxc5 {The best}) 17. e4 { This move made me worry a lot} (17. Rfd1 $16 Rb8) 17... Re8 18. Bf3 {I'm having difficulties in maintaining the stretched pawns and to develop my bishop} d4 ( 18... Rb8 19. exd5 (19. b3 d4 20. Bg4 Nf6 21. Bxc8 Rexc8 $14) 19... Rxb2 20. Ne4 Rxa2 {Almost equal}) 19. Nc4 {I liked this move of the Turbostar !} Rb8 20. Nd6 Rd8 21. Bg4 Kf8 22. b4 $1 {A beautifull move if you ask me. I'm impressed.} Nf6 (22... Ne5 {Was a good option.} 23. Nxc8 Nxg4 24. Na7 Rb7 25. Nc6 Rc8 26. Rxc5 $11 Rxb4) (22... cxb4 $4 23. Nxc8 $18) 23. Bxc8 (23. Nxc8 Nxg4 24. Na7 Rb7 25. Nc6 Rc8 26. Rxc5 Rxb4 $11) 23... Rxd6 24. bxc5 (24. e5 Rc6 25. Bf5 g6 $11) 24... Rc6 25. Bf5 g6 26. e5 gxf5 27. exf6 Rxf6 28. Rcd1 (28. Rfd1 Rd8 $11) 28... Rc8 29. Rxd4 Rxc5 30. Rd7 Re6 31. Rd2 Rce5 32. g3 f4 $1 33. gxf4 Re4 34. f5 Rf6 35. Rd8+ Kg7 36. Rd5 Rf4 37. Re1 R4xf5 38. Rxf5 Rxf5 39. Kg2 { Position is nearly symmectrical} Ra5 40. Re2 Ra3 41. f3 Kg6 42. Kg3 Kg5 43. Rc2 Ra4 44. Rb2 h5 45. Rg2 Kf5 46. h4 Ra3 47. Rd2 Re3 48. a4 Ra3 $2 {What an error} 49. Rd5+ Kg6 50. Ra5 Ra1 51. Rxa6+ f6 52. Ra7 Rg1+ 53. Kh3 Rh1+ 54. Kg3 Rg1+ 55. Kh2 Ra1 56. Ra6 Ra2+ 57. Kh3 Ra1 58. Ra5 Rh1+ 59. Kg3 Rg1+ 60. Kh2 Ra1 61. Kg2 Ra2+ 62. Kg3 Ra1 63. Ra6 Rg1+ 64. Kh2 Ra1 65. Ra5 Ra2+ 66. Kg3 Ra1 67. Ra8 Kf5 68. Rh8 Kg6 69. Rg8+ Kh7 70. Ra8 Rg1+ 71. Kf4 Rh1 72. Kf5 $14 { White has something ?} Rxh4 73. Kxf6 Rf4+ 74. Kg5 Rxf3 75. Ra7+ Kg8 76. Kxh5 Kf8 77. Kg6 Ke8 78. a5 Kd8 79. a6 Kc8 80. Rg7 Rg3+ 81. Kf6 Rxg7 82. Kxg7 Kb8 83. Kf7 Ka7 1/2-1/2 Geändert von StefanT (23.08.2018 um 14:42 Uhr)
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| Folgender Benutzer sagt Danke zu StefanT für den nützlichen Beitrag: | ||
Egbert (19.08.2018) | ||
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