- int cpus = std::min(cpu_count(), MAX_THREADS);
- int msd = cpus < 8 ? 4 : 7;
-
- o["Use Debug Log"] = Option(false, on_logger);
- o["Use Search Log"] = Option(false);
- o["Search Log Filename"] = Option("SearchLog.txt");
- o["Book File"] = Option("book.bin");
- o["Best Book Move"] = Option(false);
- o["Contempt Factor"] = Option(0, -50, 50);
- o["Mobility (Middle Game)"] = Option(100, 0, 200, on_eval);
- o["Mobility (Endgame)"] = Option(100, 0, 200, on_eval);
- o["Passed Pawns (Middle Game)"] = Option(100, 0, 200, on_eval);
- o["Passed Pawns (Endgame)"] = Option(100, 0, 200, on_eval);
- o["Space"] = Option(100, 0, 200, on_eval);
- o["Min Split Depth"] = Option(msd, 4, 7, on_threads);
- o["Max Threads per Split Point"] = Option(5, 4, 8, on_threads);
- o["Threads"] = Option(cpus, 1, MAX_THREADS, on_threads);
- o["Use Sleeping Threads"] = Option(true);
- o["Hash"] = Option(32, 4, 8192, on_hash_size);
- o["Clear Hash"] = Option(on_clear_hash);
- o["Ponder"] = Option(true);
- o["OwnBook"] = Option(false);
- o["MultiPV"] = Option(1, 1, 500);
- o["Skill Level"] = Option(20, 0, 20);
- o["Emergency Move Horizon"] = Option(40, 0, 50);
- o["Emergency Base Time"] = Option(200, 0, 30000);
- o["Emergency Move Time"] = Option(70, 0, 5000);
- o["Minimum Thinking Time"] = Option(20, 0, 5000);
- o["Slow Mover"] = Option(100, 10, 1000);
- o["UCI_Chess960"] = Option(false);
- o["UCI_AnalyseMode"] = Option(false, on_eval);
+ constexpr int MaxHashMB = Is64Bit ? 33554432 : 2048;
+
+ o["Debug Log File"] << Option("", on_logger);
+ o["Threads"] << Option(1, 1, 512, on_threads);
+ o["Hash"] << Option(16, 1, MaxHashMB, on_hash_size);
+ o["Clear Hash"] << Option(on_clear_hash);
+ o["Ponder"] << Option(false);
+ o["MultiPV"] << Option(1, 1, 500);
+ o["Skill Level"] << Option(20, 0, 20);
+ o["Move Overhead"] << Option(10, 0, 5000);
+ o["Slow Mover"] << Option(100, 10, 1000);
+ o["nodestime"] << Option(0, 0, 10000);
+ o["UCI_Chess960"] << Option(false);
+ o["UCI_AnalyseMode"] << Option(false);
+ o["UCI_LimitStrength"] << Option(false);
+ o["UCI_Elo"] << Option(1350, 1350, 2850);
+ o["UCI_ShowWDL"] << Option(false);
+ o["SyzygyPath"] << Option("<empty>", on_tb_path);
+ o["SyzygyProbeDepth"] << Option(1, 1, 100);
+ o["Syzygy50MoveRule"] << Option(true);
+ o["SyzygyProbeLimit"] << Option(7, 0, 7);
+ o["Use NNUE"] << Option(true, on_use_NNUE);
+ o["EvalFile"] << Option(EvalFileDefaultName, on_eval_file);