Sargon 3 Versus Sargon 5

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spacious_mind
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Sargon 3 Versus Sargon 5

Post by spacious_mind »

After playing a couple of games against Fidelity V11 68060 72 MHz, I thought I would next give Amiga 68060 Sargon 3 a try against DOSBox Sargon V playing at Dynamic and Max setting.

Game 1

[Event "Computer Test Match"]
[Site "?"]
[Date "2017.03.04"]
[Round "1"]
[White "DB Sargon V, 30S AV.."]
[Black "Amiga 68060 Sargon 3, 30S AV.."]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2334"]
[BlackElo "2334"]
[Annotator "SM"]
[PlyCount "111"]
[EventDate "2017.03.04"]
[EventType "match"]
[EventRounds "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 {DB Sargon V out of book} 7. O-O Bg7 8. Bxc6+ {Amiga 68060 Sargon 3 out of book} bxc6 9. Be3 O-O 10. Nbd2 Rb8 11. b4 Bd7 12. h3 Qe7 13. Qe2 h6 14. a4 Rbe8 15. a5 Rb8 16. Rab1 Kh7 17. Rbc1 c5 18. bxc5 dxc5 19. Nc4 Nh5 20. Qa2 Rb5 21. Qd2 f5 22. exf5 Rxf5 23. Nh2 Nf4 24. Rce1 Nd5 25. Qc2 Nxe3 26. Nxe3 Rh5 27. Ra1 Be6 28. c4 Rb4 29. Rad1 Rh4 30. Nf3 Rf4 31. Nd2 Rf8 32. Ne4 Rfb8 33. Rb1 c6 34. Qa2 Qf8 35. Rfe1

[fen]1r3q2/6bk/p1p1b1pp/P1p1p3/1rP1N3/3PN2P/Q4PP1/1R2R1K1 w - - 0 35[/fen]

The game was pretty even but in this position Amiga Sargon 3 played a weird move with 35. ... Bf7? that ended up being costly in the end.

Bf7 36. Nc2 Rxb1 37. Rxb1 Rxb1+ 38. Qxb1 Qd8 39. Ne3 Qxa5 40. Qb7 Kg8 41. Nd6 Qa1+ 42. Kh2 Be6 43. Qe7 Bf5 44. Nexf5 gxf5 45. Nxf5 e4 46. d4 Bxd4 47. Nxh6+ Kh8 48. Nf7+ Kg8 49. Ng5 Be5+ 50. g3 Bxg3+ 51. Kxg3 Qc3+ 52. Kg4 Qg7 53. Qe8+ Qf8 54. Qg6+ Qg7 55. Kf5 Qxg6+ 56. Kxg6 1-0

There were several Ponder moves in this game, therefore my first impression is that these two programs are quite similar with however Sargon V enjoying perhaps some additional knowledge towards the endgame. This could be as a result of additional hash.

The depth of search between these two settings is quite close with both programs reaching similar depths in their searches.

Final Position

[fen]6k1/8/p1p3K1/2p3N1/2P1p3/7P/5P2/8 w - - 0 56[/fen]

Game 2

[Event "Computer Test Match"]
[Site "?"]
[Date "2017.03.04"]
[Round "2"]
[White "Amiga 68060 Sargon 3, 30S AV.."]
[Black "DB Sargon V, 30S AV.."]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "2334"]
[BlackElo "2334"]
[Annotator "SM"]
[PlyCount "148"]
[EventDate "2017.03.04"]
[EventType "match"]
[EventRounds "2"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 {DB Sargon V out of book} e4 {Amiga 68060 Sargon 3 out of book} 5. Nc3 a6 6. Bxc6 dxc6 7. f3 exf3 8. Nxf3 Bd6 9. e4 Bg4 10. d4 Bf4 11. Qd3 Qe7 12. O-O O-O-O 13. Ne2 Bh6 14. Ne5 Be6 15. Ng3 Ng4 16. Nxg4 Bxg4 17. Nf5 Bxf5 18. Rxf5 g6 19. Rf2 Bg7 20. Raf1 f6 21. e5 f5 22. Re2 Qe6 23. c4 Rhe8 24. Qe3 h6 25. Bc3 Kb8 26. Qf4 Rf8 27. Rfe1 g5 28. Qf2 f4 29. Bb4 Rfe8 30. Re4 Bf8 31. Bc3 Ba3 32. Qf1 Qg6 33. Qe2 Qe6 34. c5 Qd5 35. Qc4 Bc1 36. Qxd5 cxd5 37. R4e2 Be3+ 38. Kh1 h5 39. Bb2 Kc8 40. Ba1 Re6 41. Bc3 Rg8 42. a3 Kd7 43. b4 g4 44. g3 Rf8 45. Rd1 Ree8 46. a4 Ke6 47. b5 axb5 48. axb5 Ra8 49. gxf4 Bxf4 50. Bb4 Ra4 51. Rb1 c6 52. bxc6 bxc6 53. Bc3 Ra3 54. Bd2 Ra2 55. Rf1 Ke7 56. Ref2 Rxd2 57. Rxf4 Rxf4 58. Rxf4 Kd7 59. Kg1 Kc7 60. Rf7+ Kc8 61. Rf6 Kb7 62. Rf4 Ka6

[fen]8/8/k1p5/2PpP2p/3P1Rp1/8/3r3P/6K1 w - - 0 63[/fen]

Here Sargon 3 again made a crucial mistake. Until now for 62 moves the game was well fought and seemed to be a draw. The good move in this position was 63. Kf1! sacrificing the h-pawn but which would have allowed the advance of the e-pawn. That could have been nasty for Sargon V.

63. Rf1 Rxd4 64. Re1 Rf4 65. e6 Rf8 66. Rb1 Re8 67. Rb6+
Ka5 68. e7 Rxe7 69. Rxc6 Kb5 70. Rh6 Re5 71. c6 Kb6 72. Kf2 Kc7 73. Kg3 Rf5 74. Rh7+ Kxc6 0-1

Final Position

[fen]8/7R/2k5/3p1r1p/6p1/6K1/7P/8 w - - 0 75[/fen]

Sargon V wins the second game as well and leading 2-0.

Game 3

[Event "Computer Test Match"]
[Site "?"]
[Date "2017.03.04"]
[Round "3"]
[White "DB Sargon V, 30S AV.."]
[Black "Amiga 68060 Sargon 3, 30S AV.."]
[Result "1/2-1/2"]
[ECO "B18"]
[WhiteElo "2334"]
[BlackElo "2334"]
[Annotator "SM"]
[PlyCount "165"]
[EventDate "2017.03.04"]
[EventType "match"]
[EventRounds "3"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nh3 e6 {
DB Sargon V out of book} 8. h5 {Amiga 68060 Sargon 3 out of book} Bh7 9. Bc4 Nf6 10. O-O Be7 11. Bf4 O-O 12. c3 Nbd7 13. Qf3 Qb6 14. b3 a5 15. Rae1 Nd5 16. Bd2 a4 17. Nf4 Bd6 18. Ra1 N7f6 19. b4 Qc7 20. Nfe2 a3 21. Bd3 b5 22. Bxh7+ Kxh7 23. Rab1 Kg8 24. Rb3 Ra4 25. Rbb1 Ra7 26. Qd3 Ng4 27. Qe4 Ndf6 28. Qf3 Be7 29. c4 Raa8 30. Rfc1 Qd7 31. Rb3 e5 32. cxb5 cxb5 33. Qf5 exd4 34. Qxd7 Nxd7 35. Nxd4 Rfb8 36. Nc2 Bf6 37. Bc3 Nde5 38. f3 Nd3 39. Rd1 Nge5 40. Ne4 Nf4 41. Kh1 Rd8 42. Rxd8+ Rxd8 43. Nxf6+ gxf6 44. Nd4 Ned3 45. g4 Nxb4 46. Rxa3 Nbd5 47. Bd2 Nb4

[fen]3r2k1/5p2/5p1p/1p5P/1n1N1nP1/R4P2/P2B4/7K w - - 0 48[/fen]

In the early part of the game, Sargon 3 had the advantage, but then it turned with Sargon V enjoying the better game. In this position I think Sargon V missed its best opportunity with the move 48. Bxf4. The played move 48. Nb3 was not so good and lessened the pressure on Sargon 3.

48. Nb3 Nbd3 49. Ra5 Rd5 50. a4 bxa4 51. Rxa4 Rb5 52. Bxf4 Rxb3 53. Bxh6 Ne5 54. Bf4 Rxf3 55. Kg2 Rb3 56. Bg3 Kg7 57. Re4 Rb2+ 58. Kh3 Nf3 59. Re3 Ng5+ 60. Kh4 Rb1 61. Bh2 Rb2 62. Bf4 Rb1 63. Re2 Rh1+ 64. Bh2 Nf3+ 65. Kg3 Nxh2 66. Rxh2 Rxh2 67. Kxh2 Kh6 68. Kg3 Kg5 69. Kf3 f5 70. gxf5 Kxh5 71. Ke4 f6 72. Kf4 Kh4 73. Ke4 Kg4 74. Ke3 Kxf5 75. Kf3 Kg5 76. Kg3 f5 77. Kf3 Kf6 78. Kf4 Ke6 79. Kf3 Ke5 80. Ke3 f4+ 81. Kf3 Kf5 82. Kg2 Ke4 83. Kf2 1/2-1/2

Final Position

[fen]8/8/8/8/4kp2/8/5K2/8 w - - 0 83[/fen]

This was another hard fought game. Score now is Sargon V = 2.1/2 points. Amiga Sargon 3 = 1/2 point.

My suspicion is that Sargon V really is what Sargon 3 should have been on a PC. In other words it is the Motorola 68000 conversion instead of the 6502 conversion that failed so badly with PC Sargon 3. There are quite a few ponder moves that are being played. If there is improvement in Sargon V then I would guess it is as a result of better hash and/or some endgame improvements. The middle game is pretty equal. The opening book is also a little different.

Best regards
Nick
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Tibono2
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Post by Tibono2 »

Hi Nick,

based on my own tests and Cmhz (Chess Mhz) idea from Selective Search, here is a list of Spracklen's programs, sorted by year.
I added a "relative performance" column which is a percentage of Excellence 3Mhz chessboard (which is my "Elo" anchor in my list; fixed value 1780).

Rperf of program_x is computed as:
Rperf_x = ELO_x / ( 1780 + (LOG10(Cmhz_x / 3) / LOG10(2) * 60))
then displayed as %.
1780 being 3Mhz Excellence's ELO and 3 being its Cmhz value. I assumed a speed doubling to provide +60 ELO points.

Image

Some comments:
- Sargon II on Commodore 64 seems a bit outperformed, but remember it is based on 1979 Z80 code (and it does not ponder)
- Sargon III on PC-XT is indeed weeker than same years' usual performance on 6502 CPUs (90% versus ~ 94 to 96%)
- 1984 Sargon III on C64 performs very closely to 1983 Super9
- the drop in strengh with Sargon 4 is obvious
- another drop appears with Chesster but it is not - it is just a late reuse of Par Excellence program
- Sargon 5 shows even perf level with top EAG boards

kind regards
Tibono
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scandien
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Post by scandien »

hello,

i have read somewhere( i don't remenber exactly) that Sargon V really was what Sargon IV (not 3) should have been on a PC.

The Sargon IV program was an evolution on version 3, and if the MAC version was a success , the PC one was a disappointment (it was obviously bugged), and plaid at a very low level , even compared to Sargon 3.
The programmer produces then Sargon V for PC , and ti seems that the bug of Sargon 5 on PC were solved, so the Sargon 5 on PC was very similar to a Sargon IV on Amiga.


relation to dedicated machines:
The Sargon III was embedded in EXCELLENCE , and was replace by Sargon 5 on the Mach III.

Best regards
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mclane
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Post by mclane »

More logical s5 was excell 68000. it was NOT mach3
What seems like a fairy tale today may be reality tomorrow.
Here we have a fairy tale of the day after tomorrow....
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Post by spacious_mind »

scandien wrote:hello,

i have read somewhere( i don't remenber exactly) that Sargon V really was what Sargon IV (not 3) should have been on a PC.

The Sargon IV program was an evolution on version 3, and if the MAC version was a success , the PC one was a disappointment (it was obviously bugged), and plaid at a very low level , even compared to Sargon 3.
The programmer produces then Sargon V for PC , and ti seems that the bug of Sargon 5 on PC were solved, so the Sargon 5 on PC was very similar to a Sargon IV on Amiga.


relation to dedicated machines:
The Sargon III was embedded in EXCELLENCE , and was replace by Sargon 5 on the Mach III.

Best regards
Could be that Sargon IV was the start of the Sargon III 68000 conversion that failed and Sargon V is the 68000 conversion that succeeded.

The search similarities and ponders between Amiga Sargon III and PC Sargon V are too many for them not to be closely related. There would be no way that Amiga Sargon III could play PC Sargon V so closely if this were not the case.

3 Years between the conversions and at a time when Spracklen were packing it all in. They did not create a new program with Sargon V. The actual computer search screens between the two are also identical. They may have enhanced a little but that is about as much work that they did. Other than the graphical screens etc which I am sure someone else did.

Best regards
Nick
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spacious_mind
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Post by spacious_mind »

mclane wrote:More logical s5 was excell 68000. it was NOT mach3
Sorry less logical 68000 already existed with Sargon 3, no need to convert an S5 PC to do when you already have it from 1988.

ps @ Tibono, 68000 Sargon 3 came out in 1988 (a different year to 6502). From a development standpoint also fits into Excel 68,000. Therefore nothing to do with S5.
Nick
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Post by spacious_mind »

Ps... If you go back and read Ron Nelson's posts, he indicated as much that he worked on the Spracklen programs to make them work on the Fidelity units. He had what was available which would have been 6502 program and 68000 programs. And he did with them what Ron Nelson knew how to do best. He made them work across the range of computers that came out.

By the time Sargon V came out in 1991 Spracklen would have been a figment of the past. Therefore Ron Nelson did nothing with S5 a PC program. His work was all around Motorola 68,000 program.

Pity he is still not here to share what he knows. I bet he could quickly confirm what went on.

The similarities that Sargon 5 shows is of course true do to it being finally a successful conversion of the 68000 Sargon 3 program to PC :wink:

Best regards
Nick
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Bryan Whitby
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Post by Bryan Whitby »

Larry Kaufman suggested in his Computer Chess Report that it it pretty much a translation of the Sargon IV Mac version which is to say a translation of the Fidelity Mach II program?
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Post by spacious_mind »

Chessmaster Ireland wrote:Larry Kaufman suggested in his Computer Chess Report that it it pretty much a translation of the Sargon IV Mac version which is to say a translation of the Fidelity Mach II program?
Right, but where would the MAC program come from. It all goes back to Motorola 68000 Sargon III.

In all honesty at that time very few people took Amiga and Atari seriously and they would have no way of knowing the potential of the Sargon III program to gage and compare, because when you run it at 68,000 its search depth is so low that you would be happy to get a score of 1800 ELO.

Larry Kaufman made a comparison to what he saw on his Mac, but probably even for him the complete picture was missing since he was also mistakenly comparing a PC Motorola conversion to Motorola. Instead he should have compared Motorola to Motorola.

Best regards
Nick
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Post by spacious_mind »

Here is the 4th game between Amiga 68060 Sargon 3 versus DB Sargon V.

[Event "Computer Test Match"]
[Site "?"]
[Date "2017.03.05"]
[Round "4"]
[White "Amiga 68060 Sargon 3, 30S AV.."]
[Black "DB Sargon V, 30S AV.."]
[Result "1-0"]
[ECO "D50"]
[WhiteElo "2334"]
[BlackElo "2334"]
[Annotator "SM"]
[PlyCount "137"]
[EventDate "2017.03.05"]
[EventType "match"]
[EventRounds "4"]

1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. Bg5 c5 5. cxd5 cxd4 6. Qxd4 Nc6 {Amiga 68060 Sargon 3 out of book} 7. Qd2 {DB Sargon V out of book} exd5 8. Bxf6 Qxf6 9. Nxd5 Qd8 10. Nf3 Be6 11. Nc3 Qxd2+ 12. Kxd2 O-O-O+ 13. Ke1 Be7 14. e4 f5 15. e5 Nb4 16. Rc1 Kb8 17. a3 Nc6 18. Be2 Rc8 19. Bb5 Na5 20. Nd4 Nb3 21. Nxb3 Bxb3 22. Rf1 Rhd8 23. Ke2 Rd4 24. f4 g5 25. g3 Rcd8 26. Kf3 Rd2 27. Rf2 a6 28. Rxd2 Rxd2 29. Be2 g4+ 30. Ke3 Rxb2

[fen]1k6/1p2b2p/p7/4Pp2/5Pp1/PbN1K1P1/1r2B2P/2R5 w - - 0 31[/fen]

Sargon 3 got itself in a mess in the opening and the above position shows that Sargon 5 has the initiative. But from this position onwards Sargon 3 played the game very skillfully, taking advantage of a few small errors from Sargon 5.

31. a4 Ba3 32. Ra1 Bc5+ 33. Kd3 Bc2+ 34. Kc4 b6 35. Bd1 Bxd1 36. Rxd1

[fen]1k6/7p/pp6/2b1Pp2/P1K2Pp1/2N3P1/1r5P/3R4 w - - 0 36[/fen]

Just a few moves later and the passed pawn on e5 looks dangerous. I am not sure if 36. ... Kc7 might have been better for Sargon 5. Anyway 36. ... Rxh2 was the beginning of its defeat. Sargon 3 played the game from this point onwards to perfection. It is really exciting playing both these great programs. Their moves are so full of surprises and so much fun to follow.

Rxh2 37. e6 Kc8 38. a5 Rg2 39. axb6 Ba3 40. Ra1 Bd6 41. Rxa6 Kb7 42. Ra7+ Kxb6 43. Rxh7 Rg1 44. e7 Re1 45. Rh1

[fen]8/4P3/1k1b4/5p2/2K2Pp1/2N3P1/8/4r2R w - - 0 45[/fen]

Such a beautiful position. Sargon 5 is dammed and I could have ended the game here but I allowed it to play to the end.

Rxe7 46. Nd5+ Kc6 47. Nxe7+ Bxe7 48. Rh6+ Bd6 49. Rf6 Kc7 50. Rxf5 Kd7 51. Kd5 Ke7 52. Rg5 Ba3 53. Rxg4 Kf6 54. Ke4 Bf8 55. f5 Bb4 56. Rg6+ Kf7 57. g4 Be7 58. g5 Bd8 59. Kf4 Ba5 60. Ra6 Bd2+ 61. Kg4 Be3 62. Kh5 Bd4 63. f6 Kf8 64. g6 Ke8 65. g7 Kf7 66. g8=Q+ Kxg8 67. Kg6 Bc5 68. Ra8+ Bf8 69. f7+ 1-0

Final Position

[fen]R4bk1/5P2/6K1/8/8/8/8/8 w - - 0 69[/fen]

Score now is:

DB Sargon 5 = 2.1/2 points
Amiga 68060 Sargon 3 = 1.1/2 points

All 4 games were amazing to play.

PC Sargon 5 Search Window

Image

Amiga Sargon 3 Search Window

Image

Identical Search methods.

Best regards
Nick
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Post by spacious_mind »

Here is the 5th game between Sargon 3 and Sargon 5:

[Event "Computer Test Match"]
[Site "?"]
[Date "2017.03.05"]
[Round "5"]
[White "DB Sargon V, 30S AV.."]
[Black "Amiga 68060 Sargon 3, 30S AV.."]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2334"]
[BlackElo "2334"]
[Annotator "SM"]
[PlyCount "135"]
[EventDate "2017.03.05"]
[EventType "match"]
[EventRounds "5"]

1. e4 e6 2. Qe2 c5 3. b3 {Amiga 68060 Sargon 3 out of book} Nc6 {DB Sargon V out of book} 4. Nf3 d6 5. Bb2 Nf6 6. Nc3 Be7 7. O-O-O O-O 8. g3 e5 9. Bg2 Nd4 10. Nxd4 cxd4 11. Nd5 Bd7 12. Nxe7+ Qxe7 13. c3 Rac8 14. Kb1 dxc3 15. dxc3 Rc6 16. h3 a5 17. g4 Ra8 18. g5 Ne8 19. h4 a4 20. Qb5 axb3 21. axb3 Rxc3 22. Qxb7 Rcc8 23. Qb6 Rcb8 24. Qe3 Be6 25. Rd3 Qb7 26. Kc2 Rc8+ 27. Kd2

[fen]r1r1n1k1/1q3ppp/3pb3/4p1P1/4P2P/1P1RQ3/1B1K1PB1/7R w - - 0 27[/fen]

This time it was Sargon 5's turn to get into trouble with the opening. Sargon 3 has a good advantage in the above position. The move 27. ... Ra2 might have been better than 27. ... Qb4+.

Qb4+ 28. Ke2 Rc2+ 29. Rd2

[fen]r3n1k1/5ppp/3pb3/4p1P1/1q2P2P/1P2Q3/1BrRKPB1/7R w - - 0 29[/fen]

Here Sargon 3 missed the most likely winning move 29. ... Bc4+!

Rac8 30. Ba1 Rxd2+ 31. Qxd2 Qb5+ 32. Kf3 Qxb3+ 33. Qe3 Qc2 34. Kg3 f5 35. f4 Rb8 36. Rc1 exf4+ 37. Qxf4 Qd3+ 38. Kh2 Rb4 39. Qf2 Qa3 40. Rf1 Rb5 41. Bd4 Qb3 42. Qe3 Qxe3 43. Bxe3 fxe4 44. Bxe4 Re5 45. Rf4 h6 46. Bd4 hxg5 47. Bxe5 gxf4 48. Bxf4 Nf6

[fen]6k1/6p1/3pbn2/8/4BB1P/8/7K/8 w - - 0 49[/fen]

By this time all Sargon 3's advantages had gone and the game played itself out into a draw.

49. Bc2 Ng4+ 50. Kg3 Ne5 51. Kf2 Nc4 52. Ke2 d5 53. Bg6 Kf8 54. Kd3 Bf7 55. Bf5 Ke7 56. Kd4 Na5 57. Bg4 Nb3+ 58. Ke5 Ke8 59. Bf3 d4 60. Bc6+ Kd8 61. Bb5 Kc8 62. Bg3 Kb7 63. Bf2 Kb6 64. Bd3 Kc5 65. Bg1 Bh5 66. Bc2 Kb4 67. Bxb3 Kxb3 68. Kxd4 1/2-1/2

Final Position

[fen]8/6p1/8/7b/3K3P/1k6/8/6B1 w - - 0 68[/fen]

Score

DB Sargon V = 3 points
Amiga 68060 Sargon 3 = 2 points

I also just complete game 6:

Game 6

[Event "Computer Test Match"]
[Site "?"]
[Date "2017.03.05"]
[Round "6"]
[White "Amiga 68060 Sargon 3, 30S AV.."]
[Black "DB Sargon V, 30S AV.."]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "2334"]
[BlackElo "2334"]
[Annotator "SM"]
[PlyCount "155"]
[EventDate "2017.03.07"]
[EventType "match"]
[EventRounds "6"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 {DB Sargon V out of book} d5 5. Nxe5 Nd7 {Amiga 68060 Sargon 3 out of book} 6. O-O Nxe5 7. dxe5 Nc5 8. Be2 Bf5 9. Be3 c6 10. c4 dxc4 11. Bxc4 Qc7 12. f4 b5 13. Be2 Be7 14. Bf3 Bd3 15. Rf2 Be4 16. Bxe4 Nxe4 17. Rc2 f5 18. g4 Rd8 19. Qf3 Rd3 20. gxf5 Qb6 21. Qxe4 Rxe3 22. Qxc6+ Qxc6 23. Rxc6 Kd7 24. Rc3 Re2 25. e6+ Kd6 26. Na3 Kd5 27. Rc7 Bxa3 28. bxa3 Ke4 29. Rf7 a6 30. Rb1 Rg8 31. e7 Re8 32. Rf1 h5 33. h4 Re3 34. Rf2 Rg3+ 35. Kf1 Re3 36. Kg2 Re1 37. Rxg7 Kxf5 38. Rg5+ Kf6 39. Rxh5 Re3 40. Rh6+ Kxe7 41. Rxa6 Rg8+ 42. Kf1 Rh8 43. f5 Rxh4 44. f6+ Kf7 45. Ra7+ Kf8 46. f7 Ra4 47. Rb7 Ra8 48. Rxb5 Rexa3

[fen]r4k2/5P2/8/1R6/8/r7/P4R2/5K2 w - - 0 49[/fen]

In this game Sargon 3 had the better game throughout. When this position was reached, to be honest I doubted if Sargon 3 had enough skills for a complicated Rooks and pawn ending. But I shouldn't have doubted as it figured out how to play it quite skillfully.

49. Rh5 Ke7 50. Rh4 Rf8 51. Re4+ Kd7 52. Rd2+ Kc6 53. Rc4+ Kb5 54. Rf4 Ra7 55. Rdf2 Kc6 56. a4 Kd6 57. Kg2 Kd7 58. Kg3 Ra5 59. Rd2+ Kc6 60. Rc4+ Kb6 61. Rf2 Ra7 62. Rf6+ Ka5 63. Rf5+ Ka6 64. Rcf4 Kb6 65. Kh4 Kc7 66. Kg5 Ra6 67. Rf6 Raa8 68. Kh6 Rh8+ 69. Kg7 Rhf8 70. Rb4 Rh8 71. a5 Rh3 72. f8=R Rxf8 73. Kxf8 Ra3 74. a6 Kc8 75. Re4 Rd3 76. a7 {Sargon 3 announces checkmate in 6.} Kb7 77. Rf7+ Kb6 78. a8=Q 1-0

Final Position

[fen]Q4K2/5R2/1k6/8/4R3/3r4/8/8 w - - 0 78[/fen]

Score

DB Sargon 5 = 3 points
Amiga 68060 Sargon 3 = 3 points

I am starting to feel after todays games that Sargon 3 might even be better than Sargon 5.

Who would have thought this.

Best regards
Nick
Martin Hertz
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Post by Martin Hertz »

Probably you are testing Sargon III with hash versus Sargon V without hash.

Learned much about Sargon regards
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spacious_mind
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Post by spacious_mind »

Martin Hertz wrote:Probably you are testing Sargon III with hash versus Sargon V without hash.

Learned much about Sargon regards
The DOS programs I set with 16 MB and use XMS, EMS and UMB all checked and it works just fine. Amiga I have set with 8 MB memory chip setting.

These programs don't need more than just a couple of MB to perform.

Regards
Nick
Martin Hertz
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Posts: 76
Joined: Wed Oct 07, 2015 7:08 pm

Post by Martin Hertz »

Ok, good to know. I've serious problems with EMS under real DOS. But it's not that important. The only other program I know that requires EMS is Complete Chess System.
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