engine misses checkmate

Hej hej,

while i was looking at a simple endgame i could not belive what i saw!

the following position:

white: King-f6, pawn-g5

black: King-h7

white to move

this endgame is a clear mate in 16 but Komodo10, Stockfish8 and Fritz13 say its draw?????

after 1.Kf7 Kf8 2.Kg6 they found it again.

Even after adding the syzygy tablebases the engine "only" says #1000.

I tired Fritz15GUI and Arena but no difference.

Anyone have any idea what is wrong here?

Try yourself and tell what you got.

Arena with SF8. Mate in 16 after a couple of seconds of analysis time. (Same answer with or without syzygy bases.)

As it should be. But how can that be?

Can it be that its something with AMD processor or Win10.

It really puzzles me

I don't have a clue. Try rebooting your system to see if the problem is repeatable.

For Stockfish, are you using the x32, x64, x64bmi2, or the x64popcnt executable?

Try running on one thread only.

First thing I'd do is clear the cache and have it think on that specific position anew. Sometimes when you repeat positions the eval will read 0.00