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| ### | |
| ### Ziggy - v0.7 | |
| ### | |
| Description | |
| =========== | |
| Yet another chess engine. Created with a *little* help and inspiration from other chess engines | |
| such as CPW, Mediocre, TSCP, Glaurung, Stockfish, Fruit, and inspirations and guides from people | |
| like Fritz Reul (Loop) and Ed Schröder (Rebel). | |
| To be done | |
| ========== | |
| # C++'d - I guess. :( | |
| ! Search extensions. | |
| ! Fix memory issues. | |
| ! Deterministic mode. | |
| ! Some actual parsing of UCI's options. | |
| # Better transposition entries. | |
| # Better transposition table (with generations, clusters of entries, etc) | |
| # Only generate 'good captures' in quiescence. | |
| # Dynamic R value in Null-Moves. | |
| ! Killer moves | |
| ? Contempt factor | |
| # Endgame tablebases. | |
| ! Evaluation. :( | |
| Usage instructions | |
| ================== | |
| UCI mode: | |
| java -jar ziggy.jar | |
| Benchmark mode: | |
| java -jar ziggy.jar <bench> <type=perft | depth | suite> <file=suite/fen file> | |
| [time=time for each position (s)] [depth=fixed depth for each position] | |
| Both modes: | |
| In both UCI and benchmark mode there are a number of settings which can be adjusted | |
| as requested. | |
| Setting Default Description | |
| --------------------------------- -------- ----------------------------------------------------- | |
| mc=<on | off> on Turns Multi-Cut (MC) on or off. | |
| mc_cutoffs=int 3 Sets MCs C param. | |
| mc_expand=int 10 Sets MCs E param. | |
| mc_reduction=int 2 Sets MCs R param. | |
| mc_piece=<on | off> off Turns MCs piece-check on or off. | |
| mc_reorder=<on | off> off Turns MCs reordering of cut nodes on or off. | |
| mc_usetrans=<on | off> off Will use the transposition table with MC. | |
| mc_apply=<cut | trans | or> trans Where to apply MC: | |
| - cut: At expected cut nodes. | |
| - trans: When a shallower search indicates fail-high. | |
| - or: If either condition holds. | |
| nm=<on | off> on Turns NMs pruning on or off. | |
| nm_reduction=int 2 Sets NMs R param. | |
| lmr=<on | off> on Turns LMR on or off. | |
| lmr_fdm=int 4 Sets the no. of full depth moves in LMR. | |
| asp=int 50 Sets the size of the aspiration window. | |
| Examples: | |
| java -jar ziggy.jar bench type=suite file=wac.txt time=10 | |
| -- Will run the test-suite Win At Chess, with a time constraints of 10 seconds per position. | |
| java -jar ziggy.jar bench type=suite file=wac.txt depth=7 | |
| -- Same, but with a fixed depth of 7 instead of time constraints. | |
| java -jar ziggy.jar bench type=suite file=wac.txt depth=7 lmr=off nm=off mc=off | |
| -- Same, but without LMR, NM- and MC pruning. |