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Move the terminal position check to after qsearch, otherwise qsearch may end up in a terminal position.

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This commit is contained in:
Tomasz Sobczyk
2020-11-22 17:18:06 +01:00
committed by nodchip
parent d43cd104b6
commit 3cee6881ee
1 changed files with 4 additions and 4 deletions
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src/learn/learn.cpp
+4 -4
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@@ -685,10 +685,6 @@ namespace Learner
int ply = 0; int ply = 0;
pos.do_move((Move)ps.move, state[ply++]); pos.do_move((Move)ps.move, state[ply++]);
// We want to position being trained on not to be terminal
if (MoveList<LEGAL>(pos).size() == 0)
goto RETRY_READ;
// Evaluation value of shallow search (qsearch) // Evaluation value of shallow search (qsearch)
const auto [_, pv] = Search::qsearch(pos); const auto [_, pv] = Search::qsearch(pos);
@@ -698,6 +694,10 @@ namespace Learner
} }
} }
// We want to position being trained on not to be terminal
if (MoveList<LEGAL>(pos).size() == 0)
goto RETRY_READ;
// Since we have reached the end phase of PV, add the slope here. // Since we have reached the end phase of PV, add the slope here.
pos_add_grad(); pos_add_grad();
} }