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| computer_chess:engines:myrddin:index 2024/12/14 16:59 | computer_chess:engines:myrddin:index 2024/12/14 17:01 current | ||
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| ==== Release Notes ==== | ==== Release Notes ==== | ||
| - | Myrddin 0.91 -- 10/20/24 | + | Myrddin 0.92 -- 12/7/24 |
| Myrddin is a winboard-compliant chess engine to a reasonable degree. It supports protover 1 primarily to support the Chessmaster interface, and also protover 2. | Myrddin is a winboard-compliant chess engine to a reasonable degree. It supports protover 1 primarily to support the Chessmaster interface, and also protover 2. | ||
| - | The 64-bit version of Myrddin should play approximately 2975 ELO against chess engines at 1 CPU (using CCRL rating), and probably 100 points higher against humans. This is an improvement of about 300-350 points compared to the previous release. Myrddin should play about 80 points stronger at 4 CPU. | + | The 64-bit version of Myrddin should play approximately 3075 ELO against chess engines at 1 CPU (using CCRL rating), and probably 100 points higher against humans. This is an improvement of 75-100 points compared to the previous release. Myrddin should play about 70 points stronger at 4 CPU. |
| The following winboard commands are supported: | The following winboard commands are supported: | ||
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| ====Version/Change List==== | ====Version/Change List==== | ||
| + | |||
| + | == Version 0.92 (12/7/24) == | ||
| + | -- Now doing incremental updates to the NN accumulator during make/unmake move\\ | ||
| + | -- Now compiling with clang (within MSVC IDE)\\ | ||
| + | -- Restored David Carteau's recommended eval multiplier - scores will be about 2x higher than before\\ | ||
| + | -- Now clearing Killer move scores with every depth\\ | ||
| + | -- Fixed potential instability/crash due to the move stack possibly becoming greater than MAX_DEPTH\\ | ||
| + | -- Minor optimizations to PVS implementation and cutoff ordering\\ | ||
| == Version 0.91 (10/20/24) == | == Version 0.91 (10/20/24) == | ||
