Is this hard ?

[xr_a_y]

I really don't get what is wrong with Minic in this position ... Topple get the mate without syzygy ?

Something with pruning in endgame because mateFinder mode of Minic is way better in this position ...

[konsolas]

Yes, Syzygy wasn't used there.

Perhaps it's to do with one of your interior node recognisers? Topple doesn't have any of those yet.

[xr_a_y]

yes maybe, so where buggy the last few days ...

[voffka]

Minic fails to find Kh5 and plays g6 instead, which leads to draw.

Also, h5 is a mate in 18, so there are two winning moves.

Igel 1.7.0 finds h5 in ~3 seconds with and without tablebases (1 thread, 256 mb tt):

info depth 17 seldepth 44 score cp 932 time 3844 nodes 9769223 tbhits 0 pv h4h5 e7f8 h5h6 f1h1 g4f5 h1h4 f5g6 h4h2 e8c6 h2c2 h6h7 c2c6 g6h5 f8f7 h7h8q f7e6 g5g6 c6c5 h5h6 c5c2 h8e8 e6f5 e8f7 f5e4 g6g7