TalkChess.com

[Aart Bik]

Folkert,
I guess it should be easy to debug your engine with the following.
I played

1. f3, e5
2. g4, ....

Then let DeepBrutePos think for 180 seconds on my Nexus. It reports 5 deep, about 86KNs and then still plays a5? Assuming you don't have ID, and start at depth 5 right away, I find it very surprising you are not able to go over all the moves and find the mate in one. If your engine really needs so much time going over all the moves, perhaps it is a good idea to start with a much lower depth (or even better, implement ID).
Aart