Is this a bug? Or I am not understanding how it works?

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Avatar of Perenis

Look at the end...

 

The two pawns...

Avatar of notmtwain
Perenis wrote:

Look at the end...

https://youtu.be/l8YRd1f5Ddw

 

The two pawns...

You evidently found a bug when the computer plays itself on some low level.

It is not clear how you set it up but you should report it using the bug report tool.

Avatar of Perenis

OK, bug reported

I tried to replicate this game (see Youtube video below - perpetual check), which results in a draw by triple repetition if we use a higher level for the CPU. When I used a lower one these pawns disappeared right before the "draw by insufficient material". But that makes no sense since black still had 2 pawns that simply vanished  right before turning into something else.

This is how the game started: