Shredder tops the computer rankings – again!

5/28/2003 – This must be a bit alarming for Fritz. For the second time in a row Shredder has topped the SSDF (Chess Computer Association) ranking list, based on over 90,000 games played by 253 computers. Interestingly, the first program that is not published by ChessBase is ranked number 14. Blush.

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THE SSDF RATING LIST

Here is the complete rating list for the top fifty programs. Note that most of the leading programs, like Fritz, Shredder, Chess Tiger, Junior and Hiarcs, are distributed by ChessBase and can be purchased in our Online Shop.

   THE SSDF RATING LIST 2003-05-26   92505 games played by  253 computers
Rating + - Games Won Oppo
------ --- --- ----- --- ----
1 Shredder 7.0 256MB Athlon 1200 MHz 2768 27 -25 801 70% 2620
2 Fritz 8.0 256MB Athlon 1200 MHz 2760 27 -26 781 69% 2616
3 Deep Fritz 7.0 256MB Athlon 1200 MHz 2759 28 -27 694 69% 2621
4 Fritz 7.0 256MB Athlon 1200 MHz 2740 30 -29 574 64% 2635
5 Chess Tiger 15.0 256MB Athlon 1200 MHz 2724 26 -26 744 63% 2630
6 Shredder 6.0 Pad UCI 256MB Athlon 1200 2723 23 -22 991 63% 2632
7 Shredder 6.0 256MB Athlon 1200 MHz 2719 31 -30 547 62% 2631
8 Shredder 7.0 UCI 128MB K6-2 450 MHz 2715 46 -43 258 63% 2622
8 Chess Tiger 14.0 CB 256MB Athlon 1200 2715 30 -30 557 61% 2636
10 Deep Fritz 256MB Athlon 1200 MHz 2713 30 -29 571 61% 2638
11 Gambit Tiger 2.0 256MB Athlon 1200 2710 29 -29 583 58% 2651
12 Junior 7.0 256MB Athlon 1200 MHz 2693 26 -26 719 56% 2653
13 Hiarcs 8.0 256MB Athlon 1200 MHz 2680 23 -23 908 54% 2650
14 Rebel Century 4.0 256MB Athlon 1200 MHz 2673 29 -29 590 60% 2603
15 Ruffian 1.0.1 256MB Athlon 1200 MHz 2670 32 -32 483 55% 2632
16 Chess Tiger 15.0 128MB K6-2 450 MHz 2666 36 -35 391 54% 2639
17 Shredder 5.32 256MB Athlon 1200 MHz 2658 26 -26 699 51% 2649
18 Gandalf 4.32h 256MB Athlon 1200 MHz 2657 31 -31 514 53% 2633
19 Deep Fritz 7.0 128MB K6-2 450 MHz 2652 40 -40 306 54% 2625
20 Deep Fritz 128MB K6-2 450 MHz 2647 22 -21 1071 58% 2587
21 Gandalf 5.0 256MB Athlon 1200 MHz 2640 49 -50 202 46% 2672
22 Gambit Tiger 2.0 128MB K6-2 450 MHz 2639 28 -27 674 64% 2537
23 Gandalf 5.1 256MB Athlon 1200 MHz 2636 25 -25 758 55% 2603
23 Junior 7.0 128MB K6-2 450 MHz 2636 23 -22 965 61% 2556
25 Fritz 7.0 128MB K6-2 450 MHz 2630 38 -37 348 53% 2607
26 Chess Tiger 14.0 CB 128MB K6-2 450 MHz 2628 26 -25 753 59% 2565
27 Shredder 6.0 UCI 128MB K6-2 450 MHz 2615 43 -43 264 52% 2605
28 Crafty 18.12/CB 256MB Athlon 1200 MHz 2613 27 -27 647 52% 2602
29 Gromit 3.11.9 256MB Athlon 1200 MHz 2610 44 -46 246 43% 2662
30 Shredder 5.32 128MB K6-2 450 MHz 2605 25 -25 759 54% 2578
31 Yace Paderborn 256MB Athlon 1200 MHz 2603 35 -35 389 48% 2617
32 Hiarcs 8.0 128MB K6-2 450 MHz 2585 33 -34 440 42% 2645
33 Rebel Century 4.0 128MB K6-2 450 MHz 2567 52 -53 178 46% 2593
34 Nimzo 8.0 128MB K6-2 450 MHz 2552 22 -22 1028 49% 2559
35 Gandalf 5.0 128MB K6-2 450 MHz 2536 73 -68 102 60% 2462
36 Gandalf 4.32h 128MB K6-2 450 MHz 2521 34 -34 418 52% 2506
37 SOS 128MB K6-2 450 MHz 2518 17 -17 1687 42% 2577
38 Chessmaster 8000 128MB K6-2 450 MHz 2515 44 -45 251 45% 2548
38 Goliath Light 128MB K6-2 450 MHz 2515 21 -22 1107 38% 2604
40 Crafty 17.07/CB 128MB K6-2 450 MHz 2492 22 -22 978 45% 2531
41 Crafty 18.12/CB 128MB K6-2 450 MHz 2479 31 -32 516 34% 2594
42 MChess Pro 8.0 128MB K6-2 450 MHz 2478 25 -26 753 40% 2549
43 Genius 6.5 128MB K6-2 450 MHz 2475 29 -29 565 48% 2488
44 R30 v. 2.5 2274 41 -38 343 69% 2136
45 Mephisto London 68 030 36 MHz 2216 71 -63 122 68% 2080
46 Meph Genius 68 030 33 MHz 2195 43 -42 267 55% 2157
47 Chess Tiger 14.9 Palm m515 16MB 42MHz 2101 69 -74 100 39% 2180
48 Atlanta SH7000 20 MHz 2087 29 -27 667 68% 1956
49 Sapphire II 2009 34 -32 464 63% 1918
50 Chess Genius 1.5 Palm m515 16MB 42MHz 1870 69 -78 100 32% 2002
The full list is available at the SSDF site
Individual results
2 Fritz 8.0  256MB Athlon 1200 MHz, 2760
Shredd7 A1200 18.5-21.5 DpFrit7 A1200 20-20 CT 15.0 A1200 23.5-16.5
Shred6P A1200 25-15 Junior7 A1200 24-18 Hiarcs8 A1200 27.5-14.5
Ruffian A1200 26.5-13.5 CT15.0 K6450 29-17 Fritz6 K6-450 45.5-13.5
Shre532 K6450 41-15 Ch.Ti12 K6450 7.5-6.5 Junior6 K6450 28-12
Nimz732 K6450 35.5-16.5 Hiar732 K6450 45.5-7.5 SOS K6-2 450 34-9
Goliath K6450 37.5-7.5 Fritz532 P200 36.5-7.5 Craf18.12 K62 37.5-7.5

31 Yace Paderborn 256MB Athlon 1200 MHz, 2603
Shred6P A1200 14-26 Hiarcs8 A1200 14.5-29.5 Ruffian A1200 13.5-28.5
DpFritz7 K6-2 15-27 Gromit3 A1200 22.5-17.5 Shre532 K6450 9.5-10.5
Junior6 K6450 21-19 Frit532 K6450 25.5-14.5 Nimz732 K6450 27.5-12.5
SOS K6-2 450 24-17
Thoralf Karlsson reports:

One of the two new entrants on this rating list is Yace Paderborn Athlon 1200 MHz. After 389 tournament games the program has a rating of 2603. Yace Paderborn is an amateur program written by Dieter Bürssner and Carlos Pesce.

We have now played 781 games with Frans Morschs latest program. Fritz 8.0 (ver 8.0.0.23) on Athlon 1200 MHz has 2760, one point ahead of it's predecessor.

Compared to the latest list from February 13, Shredder 7.0 UCI K6-2 450 MHz has gained 18 points. The other changes are insignificant.

Shredder 7.0 A1200 continues to keep the first place of the list, with eight points ahead of Fritz 8.0. With such small rating differences, it's of course impossible to claim that one program is better than the other one, against chess programs. What we can say is that the "true" rating of Shredder 7.0 with 95% probability lies within the range 2795 - 2743, and that the same range for Fritz 8.0 is between 2787 and 2734.

A few days ago we started to play with Shredder 7.04 UCI A1200. When Junior 8.0 arrives, it will also be tested.

Next rating list will probably appear in July or August.

Here are some SSDF statistics:

Fritz has dominated the SSDF list since 1998. Since then 30 lists have been published, and Fritz was in first place in 20 of these lists. It's closest rivals were Shredder (three times first place) and Tiger (twice). Here are the statistics on how many times each program has been first:

Fritz
20
Shredder
3
Tiger
2
Junior
1
Hiarcs
1
Rebel
1
Chessmaster  
1

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