Author: Moritz Berger
Date: 04:41:51 08/29/98
To contribute to the ongoing debate about relative playing strength of chess engines, I will repost the set of "Nunn" positions as proposed by GM John Nunn to compare different chess programs. How to use them: 1. Load the final position of each game in 2 chess programs. 2. Disable opening books in both programs. 3. Let both programs play the game from the final position of each of the 10 games below (resulting in 20 games total for each pairing) (4. optional) repeat experiment with different hardware, different programs, different time controls (5. optional) mail results to moritz.berger@uumail.de since I plan to do a Nunn webpage with as many results as possible. Please include exact descriptions of program version used, hash table settings, processor speed (2nd level cache size, RAM type [EDO, SDRAM, ...]). Also important is whether you used 2 machines (with permanent brain enabled for both programs) or did a Fritz/Winboard engine match. Testing 2 programs on the same machine is not recommended except in a common environment like Fritz that also controls ressource usage by both engines. But this is clearly not the best choice, so please use 2 PCs if you can. Moritz [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Sveshnikov"] [Black "?"] [Result "*"] [ECO "B33"] [PlyCount "26"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 Nf6 6. N1c3 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Bxf6 gxf6 11. Nd5 f5 12. c3 Bg7 13. exf5 Bxf5 * [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Siz1"] [Black "?"] [Result "1-0"] [ECO "B89"] [PlyCount "20"] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 a6 8. Qe2 Qc7 9. O-O-O Be7 10. Bb3 O-O 1-0 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "French"] [Black "?"] [Result "1-0"] [ECO "C19"] [PlyCount "21"] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Nf3 Ne7 8. a4 b6 9. Bb5+ Bd7 10. Bd3 Nbc6 11. O-O 1-0 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Spanish closed"] [Black "?"] [Result "1-0"] [ECO "C99"] [PlyCount "23"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Re1 O-O 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 1-0 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "QGExch"] [Black "?"] [Result "1-0"] [ECO "D36"] [PlyCount "20"] 1. d4 d5 2. c4 c6 3. Nf3 e6 4. cxd5 exd5 5. Nc3 Nf6 6. Bg5 Be7 7. Qc2 Nbd7 8. e3 O-O 9. Bd3 Re8 10. O-O Nf8 1-0 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Gruenfeld"] [Black "?"] [Result "1-0"] [ECO "D85"] [PlyCount "19"] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1 O-O 9. Be2 cxd4 10. cxd4 1-0 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Queens Indian"] [Black "?"] [Result "1-0"] [ECO "E15"] [PlyCount "25"] 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 c6 8. Bc3 d5 9. Ne5 Nfd7 10. Nxd7 Nxd7 11. Nd2 O-O 12. O-O Rc8 13. e4 1-0 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "KI Classical"] [Black "?"] [Result "0-1"] [ECO "E98"] [PlyCount "19"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Ne8 10. Be3 0-1 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "English c4/e5"] [Black "?"] [Result "0-1"] [ECO "A25"] [PlyCount "15"] 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 Nge7 6. Nge2 O-O 7. O-O d6 8. d3 0-1 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Size pawn chase"] [Black "?"] [Result "1-0"] [ECO "B97"] [PlyCount "18"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2 Qxb2 9. Rb1 Qa3 1-0
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