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#1
10.01.2026, 18:05
| Folgende 4 Benutzer sagen Danke zu Major Chaos für den nützlichen Beitrag: | ||
#2
10.01.2026, 18:52
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AW: Dedicated Chess Computer Tourney
Hello Clive,
Wow... I'm really surprised that Turbo Mephisto Amsterdam beat Tasc. It's important to note that Richard Lang had already developed a really good programme with relatively few errors in Amsterdam in 1985. His opponents had to learn this the hard way at the World Championship in Amsterdam at the time.  Best regards, Egbert 
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| Folgender Benutzer sagt Danke zu Egbert für den nützlichen Beitrag: | ||
Major Chaos (10.01.2026) | ||
#3
10.01.2026, 20:04
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Re: Dedicated Chess Computer Tourney
Hi Egbert,
Yes I hadn't noticed this before. The difference between the 1984 champion Glasgow and the 1985 champion Amsterdam is almost 300 elo. It takes Richard Lang about another 10 years and some super fast hardware to beat this! So the Amsterdam must have been quite a phenomenon when it was released. I also think that Game in 30 gives quite an advantage to programs running on super fast hardware. Best regards Clive
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| Folgender Benutzer sagt Danke zu Major Chaos für den nützlichen Beitrag: | ||
Egbert (10.01.2026) | ||
#4
11.01.2026, 16:13
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Re: Dedicated Chess Computer Tourney
A balanced start for both machines until the RISC II makes a poor move. The Amsterdam takes over and easily wins.
[Event "CB-Emu"]
[Site "?"] [Date "2026.01.11"] [Round "?"] [White "Mephisto Amsterdam Phoenix SE"] [Black "Mephisto RISC II"] [Result "1-0"] [ECO "D03"] [WhiteElo "2000"] [BlackElo "2248"] [Annotator "Clive"] [PlyCount "132"] {[%evp 9,132,-12,-14,-46,-42,-46,15,-11,-9,-40,-37,-168,-175,-191,-185,-188,-30,-34,-34,-42,0,-52,10,-97,-93,-96,0,1,0,2,3,3,107,90,94,0,0,4,4,6,7,6,8,0,231,217,228,207,224,195,209,108,277,277,419,412,471,470,445,425,461,444,691,638,721,678,616,547,2802,5281,1203,1237,827,765,4722,2298,8053,8053,19960,8053,19978,19981,19982,19982,29974,19975,19986,19975,19978,19983,19980,19973,19980,19977,29978,29982,29982,29978,29984,29977,29985,29980,29980,19995,19996,19997,19998,19999,27994,27999,27995,27999,27997,27999,27996,27997,27999,27999,27998,27999,27998,27998,27999,27998,27999]} 1. d4 d5 2. Nf3 Nf6 3. Bg5 Ne4 {Amsterdam out of book.} 4. Bh4 c5 5. dxc5 {RISC II out of book.} Nc6 6. c3 Nxc5 7. e3 Bg4 8. h3 {The position is equal.} Bxf3 9. Qxf3 Qb6 10. b3 Ne4 11. Bd3 Ne5 $36 {[%csl LRd3,LRf3][%mdl 2048] Keeping White busy.} 12. Qe2 Rd8 $2 ({Black should try} 12... g5 $19 13. Bxe4 dxe4 14. Bxg5 Nd3+ 15. Kf1 Bg7) 13. Bxe4 dxe4 14. O-O $1 f5 {[%cal Og7g5]} 15. Nd2 Qc6 16. Rfd1 Nd3 17. Nc4 b5 18. Nb2 {[%cal Rb2d3]} Qxc3 19. Nxd3 exd3 20. Qf3 d2 21. Qxf5 a6 22. Bg3 g6 23. Be5 Qxa1 ({Don't do} 23... gxf5 24. Bxc3 Rg8 25. Bxd2 $16 (25. Rxd2 Rxd2 26. Bxd2 e5 $16)) 24. Bxa1 gxf5 25. Bxh8 $11 {[%mdl 4096] Endgame KRB-KRB} e6 26. Bc3 Rd3 $2 {[#]} (26... Rc8 $11 {and Black is okay.} 27. Bxd2 Rc2) 27. Bd4 $1 $18 ({But not} 27. Bxd2 $2 Bb4 28. Kf1 Rxd2 $19) 27... Bb4 28. Kf1 {Black must now prevent Ke2.} e5 29. Bxe5 {aiming for Bd4.} Rd5 30. f4 {g4 is the strong threat.} Ke7 $2 (30... h5 $16 {might work better.}) 31. g4 Ke6 32. Ke2 a5 33. a3 Bxa3 34. Rxd2 Rxd2+ 35. Kxd2 {KB-KB} a4 (35... fxg4 $142 36. hxg4 Kf7) 36. gxf5+ Kxf5 37. bxa4 bxa4 38. Kd3 Ke6 39. e4 Bc1 40. Kc4 Bd2 41. Kd4 Kf7 42. f5 {[#] Strongly threatening Kc4.} a3 43. Kc4 {Hoping for Bc3.} Be3 44. Bc3 {Threatens to win with e5.} Bb6 45. Kb4 a2 46. e5 {[%cal Be4e5,Be5e6][%mdl 32]} Be3 47. e6+ Ke7 48. Kb3 Bd2 49. Bd4 Be3 50. Be5 Bf4 51. Bb2 Be3 52. Kxa2 Bg5 53. Kb3 Bh4 54. Bc3 h6 55. Kc4 Kd6 56. Bb4+ Ke5 57. e7 Bxe7 58. Bxe7 Kxf5 {KB-KP} 59. Kd5 {White mates.} Kf4 60. Ke6 Ke4 61. Bd6 h5 62. Kf6 Kd5 63. Bg3 Ke4 64. Kg5 h4 65. Bxh4 Ke5 66. Kg6 Ke6 {Weighted Error Value: White=0.21 (precise) /Black=0.75} 1-0
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| Folgender Benutzer sagt Danke zu Major Chaos für den nützlichen Beitrag: | ||
Tibono (11.01.2026) | ||
#5
11.01.2026, 16:18
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Re: Dedicated Chess Computer Tourney
Another poor move by the RISC II lets the Amsterdam take control.
[Event "?"]
[Site "?"] [Date "2026.01.11"] [Round "?"] [White "Mephisto RISC II"] [Black "Mephisto Amsterdam Phoenix SE"] [Result "0-1"] [ECO "E11"] [WhiteElo "2248"] [BlackElo "2000"] [Annotator "Clive"] [PlyCount "96"] {[%evp 9,95,10,70,15,17,15,23,15,79,13,20,14,15,15,15,8,17,15,19,16,22,12,24,0,7,4,4,-25,-25,-294,-292,-289,-295,-386,-391,-417,-419,-408,-415,-429,-397,-489,-464,-618,-610,-614,-606,-636,-636,-653,-619,-681,-723,-725,-743,-757,-707,-729,-711,-780,-771,-792,-780,-786,-777,-808,-802,-906,-902,-911,-852,-1267,-1005,-29991,-29992,-29995,-29994,-29994,-29995,-29995,-29996,-29996,-29997,-29997,-29998,-29998,-29999,-29999]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. Qc2 {Amsterdam out of book.} Nc6 {RISC II out of book.} 6. a3 Bxd2+ 7. Nbxd2 O-O 8. e3 {White has an edge.} Re8 9. Bd3 e5 10. dxe5 Nxe5 11. Nxe5 Qxe5 12. O-O d6 13. Nf3 {[%cal Bd2f3,Bf3d4,Bd4b5][%mdl 32]} Qh5 14. Nd4 b6 15. Nb5 Re7 16. Qd1 {Threatens to win with Qxh5.} Qe5 17. Qf3 Rb8 18. Nxa7 {Strongly threatening Nc6.} Bb7 19. Qe2 {[%mdl 8192]} (19. Nc6 $11 Bxc6 20. Qxc6) 19... c6 $19 20. Qf3 {[#]} Rc7 21. c5 bxc5 22. Qh3 Ba8 23. f4 Qe7 24. e4 c4 ({Wrong is} 24... Rxa7 $2 25. Rae1 Qd7 26. Qg3 $19) 25. e5 dxe5 26. Bxc4 Qc5+ 27. Kh1 Qxc4 28. Rac1 Qe6 29. Qe3 e4 30. Qc5 Qd5 31. Qf2 Qa5 32. Nxc6 Bxc6 33. Rfe1 Bd7 34. Rxc7 Qxc7 35. b4 Ra8 36. Qe3 Qc2 37. Qb6 Rxa3 38. Qd8+ Be8 39. Rg1 Rb3 40. Qe7 Qf2 {( -> ...e3)} 41. Ra1 e3 {Black mates.} 42. Qe5 Rb2 43. Qxb2 Qxb2 {[%cal Rb2a1]} 44. Rg1 Qf2 45. h3 e2 46. f5 {[#]} Ng4 $1 47. b5 (47. f6 Qxg1+) 47... e1=Q {[%csl Gf2][%cal Re1g1]} 48. hxg4 Qexg1# {Weighted Error Value: White=0.47/Black=0.12 (very precise)} 0-1
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#6
11.01.2026, 16:21
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Re: Dedicated Chess Computer Tourney
This time the Amsterdam makes a slip and the RISC 1MB shows it its superior endgame.
[Event "CB-Emu"]
[Site "?"] [Date "2026.01.11"] [Round "?"] [White "Mephisto Amsterdam Phoenix SE"] [Black "Mephisto RISC 1MB"] [Result "0-1"] [ECO "A28"] [WhiteElo "2000"] [BlackElo "2220"] [Annotator "Clive"] [PlyCount "142"] {[%evp 13,141,18,27,0,20,0,0,0,3,-5,-15,-36,-38,-42,-40,-41,-34,-31,-35,-48,-13,-17,-14,-21,-8,-32,-29,-61,-22,-27,-6,-10,-6,-6,-8,-16,-9,-20,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-3,-5,-4,-28,-27,-314,-224,-284,-218,-200,-139,-6578,-8358,-8358,-1232,-19977,-19978,-19980,-19980,-19978,-19975,-19975,-8321,-19986,-19990,-19991,-29977,-19991,-19992,-29982,-29983,-29983,-29984,-29984,-29985,-29985,-29986,-29990,-29988,-29988,-29988,-29988,-29989,-29989,-29990,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 Bxc3 6. Qxc3 Qe7 7. a3 a5 {Amsterdam out of book.} 8. Be2 {RISC 1MB out of book.} d5 9. cxd5 Nxd5 10. Qb3 {The position is equal.} Nb6 11. d4 exd4 12. Qd3 dxe3 13. Bxe3 O-O 14. Qc2 {Bc5 is the strong threat.} Qf6 15. Bd3 {Inhibits Bf5.} ({Reject} 15. Ng5 Bf5 16. Bd3 {[#]} Nd5 $1 17. Bxf5 Nxe3 18. fxe3 (18. Bxh7+ $2 Kh8 $19) 18... Qxg5 $17) 15... h6 16. O-O Bg4 17. Bh7+ Kh8 18. Be4 Rad8 19. Rac1 Nd5 20. Rfe1 {[%cal Bf1e1,Be1e3,Be3f3][%mdl 32]} Bxf3 (20... Rfe8 {seems wilder.} 21. Bg5 hxg5 22. Bxd5 Rxe1+ 23. Rxe1 Bf5) 21. Bxf3 Nxe3 22. Rxe3 Nd4 23. Qxc7 Nxf3+ 24. Rxf3 Qxb2 {[%cal Od8d7]} 25. Rf1 f6 26. Qxa5 Rd2 27. Qc7 Rc2 28. Qe7 Rfc8 29. Re3 b6 30. Qd7 R2c7 31. Re8+ Rxe8 32. Qxe8+ $11 {[%mdl 4096] Endgame KQR-KQR} Kh7 33. Qe3 f5 34. Re1 Rc2 35. h4 Qf6 36. h5 Rc3 37. Qe6 Qg5 38. a4 Qxh5 39. Qxb6 (39. g3 {is more complex.} Qg4 40. Re5 Qd1+ 41. Re1) 39... Rc4 {Threatens to win with ...Rh4.} 40. Qa5 (40. a5 Rh4 41. f3 Rh1+ 42. Kf2 Qh4+ 43. Ke2 Rxe1+ 44. Kd3 Rd1+ 45. Kc3 Qa4 46. Qe3 Qa3+ 47. Kc2 Qxe3 48. Kxd1 Qf2 49. a6 Qxg2 50. a7 Qxf3+ 51. Kd2 f4 52. Ke1 Qe3+ 53. Kd1 Qxa7 54. Kd2 f3 55. Kc2 f2 56. Kb3 f1=Q 57. Kc3 Qe3+ 58. Kb4 Qb1+ 59. Kc4 Qbb3#) 40... Rh4 {[%csl Gh5][%cal Rh4h1]} 41. g3 $2 {[%mdl 8192]} (41. f3 $1 $11 {and White stays safe.}) 41... Rh1+ $19 42. Kg2 Qh3+ 43. Kf3 Rh2 44. Qa7 $2 {[%mdl 8192]} (44. Rf1 $17) 44... Qg4+ 45. Ke3 f4+ 46. gxf4 Rh3+ 47. Kd2 Qxf4+ 48. Re3 Rh2 49. Kc3 Rxf2 (49... Qxf2 $142 50. Qd4 h5 51. Qd3+ g6 52. Re7+ Kh6 53. Qe3+ Qxe3+ 54. Rxe3 Ra2) 50. Kb3 Qd6 {( -> ...Qd5+)} 51. Qe7 Qd5+ 52. Kc3 Qc6+ 53. Kb3 Qc2+ {Black mates.} 54. Kb4 Rf4+ 55. Kb5 Qxa4+ 56. Kb6 Rb4+ 57. Kc7 Rc4+ 58. Kb8 Qa6 {[%csl Ga6][%cal Rc4c8]} 59. Qxg7+ Kxg7 {[%csl Ga6][%cal Rc4c8]} 60. Rg3+ {[#]} Qg6 $3 61. Rxg6+ Kxg6 {KR-K} 62. Kb7 Kf5 {[%cal Bg6f5,Bf5e4,Be4d5,Bd5d6,Bd6c5,Bc5c6,Bc6c7][%mdl 32]} 63. Kb6 Ke4 64. Kb5 Kd5 65. Kb6 Kd6 66. Kb5 Rg4 {[%cal Bc4g4,Bg4b4,Bb4a4][%mdl 32]} 67. Kb6 Rb4+ 68. Ka5 Kc5 69. Ka6 Kc6 70. Ka7 Kc7 71. Ka8 Ra4# {Weighted Error Value: White=0.51/Black=0.11 (very precise)} 0-1
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#7
11.01.2026, 16:42
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Re: Dedicated Chess Computer Tourney
In this game both machines are even and neither see the winning chances Stockfish sees. However as they approach the 50 move rule the RISC 1MB moves a pawn with only 1 second on its clock!
[Event "CB-Emu"]
[Site "?"] [Date "2026.01.11"] [Round "?"] [White "Mephisto RISC 1MB"] [Black "Mephisto Amsterdam Phoenix SE"] [Result "0-1"] [ECO "C26"] [WhiteElo "2220"] [BlackElo "2000"] [Annotator "Clive"] [PlyCount "196"] {[%evp 12,196,4,6,20,11,15,-11,4,0,20,21,25,25,33,29,25,0,0,0,0,0,0,4,0,0,12,9,29,6,16,-91,29,-85,18,-128,-28,-39,-31,-41,-15,-28,0,-281,-38,-207,0,-28,-26,-435,-424,-427,-249,-213,-16,-18,-3,-2,-7,-161,0,-1,0,0,0,0,0,0,0,0,-1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,414,0,0,0,322,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nc3 Nf6 3. g3 {Amsterdam out of book.} Nc6 4. Bg2 Bc5 5. Nf3 d6 6. d3 O-O 7. Na4 Bb6 8. Nxb6 axb6 {RISC 1MB out of book.} 9. a4 d5 10. exd5 Qxd5 11. O-O Bg4 12. h3 Bxf3 13. Bxf3 Qd4 14. Ra3 Rfe8 (14... Rxa4 $2 15. c3 Qd7 16. Rxa4 $18) 15. Re1 Rad8 (15... Rxa4 $2 16. c3 Qd7 17. Qxa4 $18) 16. Bg2 Re6 17. Ra2 e4 18. Be3 Qd7 {[%cal Re4d3]} 19. Ra3 h6 20. Bf4 Qe7 21. Qd2 Rd7 22. Kh2 Rd4 23. f3 exf3 24. Rxe6 Qxe6 25. Bxf3 Rd7 {next ...Nd4 is good for Black.} (25... Nd5 $5 {[%cal Rd5f4]} 26. c3 (26. Bxd5 Rxd5 27. Bxc7 Rf5 $17) 26... Nxf4 27. gxf4 Rd6 $11) 26. Qg2 g5 27. Bc1 {[%mdl 8192]} (27. Bxc6 $11 Qxc6 28. Qxc6 bxc6 29. Be5) 27... Nd5 $2 (27... Nd4 $19 {White must now prevent ...Qe1.} 28. Be4 (28. Bxb7 $2 g4 $19) 28... Nxe4 29. dxe4 Re7) 28. h4 $2 (28. Ra1 $15) 28... Qe5 $2 (28... Nd4 $19 {[%cal Oe6e1] Hoping for ...Qe1!} 29. a5 Nxf3+ 30. Qxf3 Qe1) 29. hxg5 hxg5 {[#] And now ...Nd4 would win.} 30. Qh3 $2 {[%mdl 8192]} (30. c3 $11) 30... f5 ({And not} 30... Nf6 31. a5 bxa5 32. Qg2 $17) 31. Bxd5+ Rxd5 (31... Qxd5 $142 32. Bxg5 Ne5) 32. Qh5 $19 g4 (32... Rd7 $19 {Threatens to win with ...Rh7.} 33. d4 Qe1) 33. Qg6+ $11 Kh8 34. Qh6+ Kg8 {[#] Strongly threatening ...Qe2+.} 35. Qg5+ $2 (35. Bf4 $11 Qe2+ 36. Kg1) 35... Qg7 $2 (35... Kf7 $19 36. Qe3 (36. Qh5+ $2 Ke6 $19) 36... Qf6) 36. Rc3 Qxg5 37. Bxg5 {[%mdl 4096] Endgame KRB-KRN} b5 38. axb5 Rxb5 39. b3 Nd4 40. Be3 Ne6 41. Kg2 c6 42. Rc4 Ra5 43. Ra4 Rxa4 44. bxa4 {KB-KN} Kf7 45. d4 Ng7 46. c4 Ne8 47. Bf4 {Inhibits Nd6. Be5 is the strong threat.} Nf6 48. Kf2 Ne4+ 49. Ke3 Kf6 50. Be5+ Ke6 51. Bc7 Nc3 52. a5 Kd7 53. Be5 Ke6 54. Bf4 Nd1+ 55. Kd2 Nb2 56. Kc3 Nd1+ 57. Kc2 Nf2 58. Bb8 Nh3 59. Kd2 Ng5 60. Kd3 Nh3 61. Ke3 Ng1 62. Bf4 Nh3 63. Bh6 Kd6 64. Ke2 Ng1+ 65. Kd2 Nf3+ 66. Ke3 Ng1 67. Bf8+ Ke6 68. Bg7 Nf3 69. Bh6 Ne1 70. Bg5 Nc2+ 71. Kd3 Ne1+ 72. Kc3 Nf3 73. Bf4 Ne1 74. Kd2 Nf3+ 75. Ke3 Ng1 76. Kd3 Nf3 77. Bh6 Kd7 78. Be3 Ne1+ 79. Kd2 Nf3+ 80. Kc3 Ke6 81. Bh6 Kd6 82. Bf4+ Ke6 83. Bc1 Ng1 84. Kd3 {Against Ne2} Nh3 85. Be3 {[%cal Od4d5]} Kd6 $1 {Against d5} 86. Ke2 Kd7 87. Kf1 Kd8 88. Bd2 Ke7 89. Ke2 Kf6 $2 {[%mdl 8192]} (89... Kd7 $11 {and Black is okay.}) 90. Bc1 $2 (90. d5 $18 c5 91. Be3) 90... Ng1+ 91. Ke3 {aiming for d5.} Nh3 $2 {[%mdl 8192]} (91... f4+ $11 {and Black stays safe.} 92. gxf4 g3) 92. Ba3 $2 (92. d5 $18 c5 93. Ba3) 92... Ke6 {The position is equal.} 93. Bc5 Ng5 94. Bb6 Ne4 95. Bc7 Kd7 96. Be5 Ke6 97. Kf4 Nd2 98. d5+ Kd7 {[%mdl 32768] Weighted Error Value: White=0.47/Black=0.39. Sensor Board Error (Ke4/e5)? RISC 1MB loses on time!} 0-1 Next up will be the Berlin Pro. I think the Amsterdam will find this a hard opponent!
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| Folgende 4 Benutzer sagen Danke zu Major Chaos für den nützlichen Beitrag: | ||
#8
11.01.2026, 16:52
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AW: Dedicated Chess Computer Tourney
Hello Clive,
Mephisto Amsterdam held its own for a long time, but in the heavy-piece endgame, Ed Schröder's programme was clearly superior. Best regards Egbert
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| Folgende 2 Benutzer sagen Danke zu Egbert für den nützlichen Beitrag: | ||
kamoj (11.01.2026), Major Chaos (11.01.2026) | ||
#9
11.01.2026, 18:49
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Re: Dedicated Chess Computer Tourney
Here is the latest position of the Mephisto Amsterdam Phoenix SE...
With 14 more games to play!
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#10
11.01.2026, 19:32
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AW: Re: Dedicated Chess Computer Tourney
 Zitat von Major Chaos
Here is the latest position of the Mephisto Amsterdam Phoenix SE...Anhang 7687
With 14 more games to play!  Best regards Egbert
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| Folgender Benutzer sagt Danke zu Egbert für den nützlichen Beitrag: | ||
Major Chaos (11.01.2026) | ||
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