Chess Engines Diary

Chess engine: Apotheosis Rating CEDR=2757 (for Windows), no tests for Android v.4.01: New Engine Features: Estimated Elo: 2550 CCRL Blitz Bugfix Fixed illegal en passant move generation bug that I accidentally introduced by forgetting parenthesis Note About Antivirus False Positives: There is a chance that your antivirus will detect threats if you try and run the binary files, specifically something called Trojan:Win32/Wacatac.H!ml whatever that is. If this happens to you, either tell your antivirus to shut up somehow, or just download the source code and compile locally with sh release.sh. I promise this program is not a virus . Individual statistics:  Apotheosis 2.0.0 - 52 games (+  5,=  1,- 46), 10.6 % Critter 1.6a                  :   2 (+  0,=  0,-  2),  0.0 % Seer 2.6                      :   2 (+  0,=  0,-  ...

Chess engine: Apotheosis Rating CEDR=2757 v.4.01: New Engine Features: Estimated Elo: 2550 CCRL Blitz Bugfix Fixed illegal en passant move generation bug that I accidentally introduced by forgetting parenthesis Note About Antivirus False Positives: There is a chance that your antivirus will detect threats if you try and run the binary files, specifically something called Trojan:Win32/Wacatac.H!ml whatever that is. If this happens to you, either tell your antivirus to shut up somehow, or just download the source code and compile locally with sh release.sh. I promise this program is not a virus . Individual statistics:  Apotheosis 2.0.0 - 52 games (+  5,=  1,- 46), 10.6 % Critter 1.6a                  :   2 (+  0,=  0,-  2),  0.0 % Seer 2.6                      :   2 (+  0,=  0,-  2),  0.0 % Clovis III    ...

Chess engine: Apotheosis Rating CEDR=1999 v.3: New Engine Features: Wrote a tuner based off of Andrew Grant's work https://github.com/AndyGrant/Ethereal/blob/master/Tuning.pdf Tuned old PSTs: +130 Elo Bishop pair bonus: +6.7 Elo Passed pawn PST: +25 Elo Blocked passers by rank: +18.5 Elo Rook open file bonus by file: +22.8 Elo Queen and King open file bonus by file: +12.3 Elo 2 PST king buckets, indexed by side of the board enemy king is on: +25.6 Elo Isolated pawns by file: +16.6 Elo Mobility (with x-ray): +53 Elo Threats: +14.7 Elo Less training data: +13.0 Elo for some reason King safety: +37 Elo Note About Antivirus False Positives: There is a chance that your antivirus will detect threats if you try and run the binary files, specifically something called Trojan:Win32/Wacatac.H!ml whatever that is. If this happens to you, either tell your antivirus to shut up somehow, or just download the source code and compile locally with sh release.sh. I promise this program is not a virus ...

 Chess engine: Apotheosis v.2: New UCI Features: New configurable option for hash size Now reports hashfull and seldepth New Engine Features: Transposition Table (16MB default) + PVS: 200 elo Killers: +37 elo Basic History Heuristic (reset each search): 27 elo Modified Move Ordering for Efficiency: ??? elo Honestly I don't really know where the missing 50ish elo that got it up to +312ish elo came from, but the tournament I ran suggests it came from somewhere🤷‍♂️ Note About Antivirus False Positives: There is a chance that your antivirus will detect threats if you try and run the binary files, specifically something called Trojan:Win32/Wacatac.H!ml whatever that is. If this happens to you, either tell your antivirus to shut up somehow, or just download the source code and compile locally with sh release.sh. I promise this program is not a virus. Apotheosis v2 download

 Chess engine: Apotheosis v.1.0.1: BUGFIX Fixed a bug where the engine would play illegal moves in positions it evaluated as forced draws. This was due to draw detection at the root node of the search. Note About Antivirus False Positives: There is a chance that your antivirus will detect threats if you try and run the binary files, specifically something called Trojan:Win32/Wacatac.H!ml whatever that is. If this happens to you, either tell your antivirus to shut up somehow, or just download the source code and compile locally with sh release.sh. I promise this program is not a virus. Apotheosis v1.0.1 download from page

 Chess engine: Apotheosis v.1: UCI Features: Engine supports very basic UCI features. Engine does not support stop and does not report seldepth. The only configurable option is Overhead. This should be increased if the engine is flagging games often. Engine Features: Negamax with AB pruning Qsearch PST MVV-LVA Move Ordering Naïve Pseudolegal Mobility Evaluation Note About Antivirus False Positives: There is a chance that your antivirus will detect threats if you try and run the binary files, specifically something called Trojan:Win32/Wacatac.H!ml whatever that is. If this happens to you, either tell your antivirus to shut up somehow, or just download the source code and compile locally with sh release.sh. I promise this program is not a virus. Apotheosis V1 download github:https://github.com/spamdrew128/Bitboard_Chess_Engine/releases/tag/v1.0.0