Is this a bug?

[Jordi Garcia]

Hi, 

As u can see, in that position Qg7# is threatened and mate is unstoppable. Any ideas?

Thanks.

[brian.p.r...@gmail.com]

If the FEN is 6k1/pp2rq1p/1r1b1QpB/3Bp3/8/2P5/P4PPP/3n2K1 b - - 1 1 and you are asking about the moves in response per the image, there is something odd going on.  With any old net (784139) mate in 3 is found almost immediately with info depth 3 seldepth 8 time 4885 nodes 427 score mate -3 nps 575 tbhits 0 pv e7e6 d5e6 d6f8 f6f7 g8h8 f7f8

So, the question is what net are you using and on what hardware and what time controls.
Some older nets at very small numbers of nodes searched do have glaring tactical weaknesses.