-/// OptionsMap c'tor initializes the UCI options to their hard coded default
-/// values and initializes the default value of "Threads" and "Minimum Split Depth"
-/// parameters according to the number of CPU cores.
-
-OptionsMap::OptionsMap() {
-
- OptionsMap& o = *this;
-
- o["Use Search Log"] = UCIOption(false);
- o["Search Log Filename"] = UCIOption("SearchLog.txt");
- o["Book File"] = UCIOption("book.bin");
- o["Best Book Move"] = UCIOption(false);
- o["Mobility (Middle Game)"] = UCIOption(100, 0, 200);
- o["Mobility (Endgame)"] = UCIOption(100, 0, 200);
- o["Passed Pawns (Middle Game)"] = UCIOption(100, 0, 200);
- o["Passed Pawns (Endgame)"] = UCIOption(100, 0, 200);
- o["Space"] = UCIOption(100, 0, 200);
- o["Aggressiveness"] = UCIOption(100, 0, 200);
- o["Cowardice"] = UCIOption(100, 0, 200);
- o["Minimum Split Depth"] = UCIOption(4, 4, 7);
- o["Maximum Number of Threads per Split Point"] = UCIOption(5, 4, 8);
- o["Threads"] = UCIOption(1, 1, MAX_THREADS);
- o["Use Sleeping Threads"] = UCIOption(true);
- o["Hash"] = UCIOption(32, 4, 8192);
- o["Clear Hash"] = UCIOption(false, "button");
- o["Ponder"] = UCIOption(true);
- o["OwnBook"] = UCIOption(true);
- o["MultiPV"] = UCIOption(1, 1, 500);
- o["Skill Level"] = UCIOption(20, 0, 20);
- o["Emergency Move Horizon"] = UCIOption(40, 0, 50);
- o["Emergency Base Time"] = UCIOption(200, 0, 30000);
- o["Emergency Move Time"] = UCIOption(70, 0, 5000);
- o["Minimum Thinking Time"] = UCIOption(20, 0, 5000);
- o["UCI_Chess960"] = UCIOption(false);
- o["UCI_AnalyseMode"] = UCIOption(false);
-
- // Set some SMP parameters accordingly to the detected CPU count
- UCIOption& thr = o["Threads"];
- UCIOption& msd = o["Minimum Split Depth"];
-
- thr.defaultValue = thr.currentValue = int_to_string(cpu_count());
-
- if (cpu_count() >= 8)
- msd.defaultValue = msd.currentValue = int_to_string(7);
+/// UCI::init() initializes the UCI options to their hard-coded default values
+
+void init(OptionsMap& o) {
+
+ 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);