- # if this is already in the queue, ignore it
- return if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen());
+ # if this is already in the queue, ignore it (just update the result)
+ if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen()) {
+ $pos_waiting->{'result'} = $pos->{'result'};
+ return;
+ }