void init(OptionsMap& o) {
- const int MaxHashMB = Is64Bit ? 1024 * 1024 : 2048;
+ // at most 2^32 clusters.
+ const int MaxHashMB = Is64Bit ? 131072 : 2048;
o["Debug Log File"] << Option("", on_logger);
o["Contempt"] << Option(0, -100, 100);
o["Ponder"] << Option(false);
o["MultiPV"] << Option(1, 1, 500);
o["Skill Level"] << Option(20, 0, 20);
- o["Move Overhead"] << Option(30, 0, 5000);
+ o["Move Overhead"] << Option(100, 0, 5000);
o["nodestime"] << Option(0, 0, 10000);
o["UCI_Chess960"] << Option(false);
o["SyzygyPath"] << Option("<empty>", on_tb_path);