# ignore it.
if (defined($pos_calculating) && $pos->fen() eq $pos_calculating->fen()) {
$pos_calculating->{'result'} = $pos->{'result'};
+ for my $key ('white_clock', 'black_clock', 'white_clock_target', 'black_clock_target') {
+ $pos_calculating->{$key} //= $pos->{$key};
+ }
return;
}