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Code Issues Releases Wiki Activity

Don't clear hash at the beginning of a new game

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After 900 games at 1+0
Mod vs Orig +217 =480 -196 +8 ELO

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2009-12-01 11:56:48 +01:00
parent 3f3365221b
commit 403db5a6e9
3 changed files with 5 additions and 4 deletions
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6
src/search.cpp
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@ -402,13 +402,13 @@ bool think(const Position& pos, bool infinite, bool ponder, int side_to_move,
Problem = false; Problem = false;
ExactMaxTime = maxTime; ExactMaxTime = maxTime;
if (button_was_pressed("New Game"))
loseOnTime = false; // reset at the beginning of a new game
// Read UCI option values // Read UCI option values
TT.set_size(get_option_value_int("Hash")); TT.set_size(get_option_value_int("Hash"));
if (button_was_pressed("Clear Hash")) if (button_was_pressed("Clear Hash"))
{
TT.clear(); TT.clear();
loseOnTime = false; // reset at the beginning of a new game
}
bool PonderingEnabled = get_option_value_bool("Ponder"); bool PonderingEnabled = get_option_value_bool("Ponder");
MultiPV = get_option_value_int("MultiPV"); MultiPV = get_option_value_int("MultiPV");

2
src/uci.cpp
View file

@ -124,7 +124,7 @@ namespace {
} }
else if (token == "ucinewgame") else if (token == "ucinewgame")
{ {
push_button("Clear Hash"); push_button("New Game");
Position::init_piece_square_tables(); Position::init_piece_square_tables();
RootPosition.from_fen(StartPosition); RootPosition.from_fen(StartPosition);
} }

1
src/ucioption.cpp
View file

@ -125,6 +125,7 @@ namespace {
o["Threads"] = Option(1, 1, 8); o["Threads"] = Option(1, 1, 8);
o["Hash"] = Option(32, 4, 4096); o["Hash"] = Option(32, 4, 4096);
o["Clear Hash"] = Option(false, BUTTON); o["Clear Hash"] = Option(false, BUTTON);
o["New Game"] = Option(false, BUTTON);
o["Ponder"] = Option(true); o["Ponder"] = Option(true);
o["OwnBook"] = Option(true); o["OwnBook"] = Option(true);
o["MultiPV"] = Option(1, 1, 500); o["MultiPV"] = Option(1, 1, 500);