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Old 2019-09-29, 18:56   #1
MooMoo2
 
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Aug 2010

22·3·47 Posts
Default Everyone on mersenneforum vs. Leela Chess Zero

We haven't had a vote chess game in a while, so I'm wondering if there's some interest in having another one. But instead of playing against another version of Stockfish, you'll be playing against LCZero, an engine which was trained from scratch and didn't even exist when the last forum vs. Stockfish game ended.

Leela will be using net 42850, which was created on July 26, 2019 and is one of the strongest nets created since the start of the Leela project. It's a 20 block, 256 filter net and is considered by many to be slightly stronger than Stockfish 10 and other recent stockfish development versions (Stockfish appears to be a bit stronger than Leela when playing against weaker opponents, but Leela seems to have a slight edge against Stockfish in head-to-head matches. After all, nets are used to catch fish )

The format of these games will be similar to last time. But instead of a 3 day discussion period followed by a 3 day voting period, the voting thread will be posted on Saturday, and the discussion thread will be posted on Wednesday to simplify things. As before, Leela's moves will be posted within 24 hours of the end of each voting period. I'm open to changes on this, but I'm thinking that the forum should have no engine assistance against Leela when playing as White (like the previous time). However, engine assistance will be allowed when playing as Black. Leela will not have an opening book in either game.

For reference, all of the previous forum vs. Stockfish games ended in draws -

Game 1:
Duration: October 2015 - May 2016
White: Forum with no engine assistance
Black: Stockfish 6
Moves: 1.e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nf6 5. exd5 exd5 6. Bb5+ Bd7 7. Bxd7+ Nbxd7 8. O-O Be7 9. dxc5 Nxc5 10. Nb3 Nce4 11. Nfd4 O-O 12. Nf5 Re8 13. Nxe7+ Rxe7 14. f3 Nd6 15. Bg5 Nc4 16. Bxf6 gxf6 17. Qd4 Qb6 18. Qxb6 axb6 19. Rfd1 Re5 20. f4 Re2 21. Nd4 Re4 22. Nf5 Nxb2 23. Rxd5 Rxf4 24. g3 Rc4 25. Nh6+ Kg7 26. Nf5+ Kf8 27. Rd7 Rxc2 28. Nh6 Kg7 29. Nf5+ Kg6 30. Nh4+ Kg7 31. Nf5+ Kh8 32. Rxf7 Nd3 33. Rxb7 Ne5 34. Rf1 h5 35. Rxb6 Raxa2 36. Rb8+ Kh7 37. Rb7+ Kg8 38. Nh4 Rxh2 39. Rxf6 Rhc2
Result: 1/2 - 1/2
Depth and eval stats: https://www.mersenneforum.org/showpo...2&postcount=11

Game 1b (differs on move 18):
Duration: July 2016 - August 2016
White: Forum with no engine assistance
Black: Stockfish 6
Moves: 1.e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nf6 5. exd5 exd5 6. Bb5+ Bd7 7. Bxd7+ Nbxd7 8. O-O Be7 9. dxc5 Nxc5 10. Nb3 Nce4 11. Nfd4 O-O 12. Nf5 Re8 13. Nxe7+ Rxe7 14. f3 Nd6 15. Bg5 Nc4 16. Bxf6 gxf6 17. Qd4 Qb6 18. Rab1 Qe6 19. Rfe1 Qxe1 20. Rxe1 Rxe1+ 21. Kf2 Rae8 22. Qxf6 R1e2+ 23. Kg3 Ne3 24. Qg5+ Kf8 25. Qh6+ Kg8
Result: 1/2 - 1/2
Depth and eval stats: https://www.mersenneforum.org/showpo...81&postcount=9

Game 2:
Duration: September 2016 - April 2017
White: Stockfish 7
Black: Forum with engine assistance
Moves: 1.e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Bxf6 gxf6 11. Nd5 f5 12. c3 Bg7 13. Bd3 Be6 14. Nc2 O-O 15. O-O fxe4 16. Bxe4 Rc8 17. a4 f5 18. axb5 axb5 19. Bf3 e4 20. Be2 Kh8 21. Qd2 Be5 22. f4 Bxd5 23. Qxd5 Qb6+ 24. Kh1 Bg7 25. Rad1 b4 26. Nxb4 Nxb4 27. cxb4 Qxb4 28. b3 Rc2 29. Bc4 Qc5 30. Qe6 Bd4 31. Rc1 Rd2 32. Bd5 Qb5 33. Qxd6 Bg7 34. Bc4 Rxd6 35. Bxb5 Rd2 36. g3
Result: 1/2 - 1/2
Depth and eval stats: https://www.mersenneforum.org/showpo...41&postcount=5

Will we still get draws for the forum vs. Leela games, or will one side prevail? Post here if you're interested and want to find out!
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