Engine test- 3-move mate Sam Loyd (1903) masterpiece Ke2!

[mvanthoor]

This is also true in Blunder. With null-move pruning Blunder doesn't find the mate-in-3 until the 7th ply:

...

With null-move pruning disabled, it finds the mate at the 5th ply, like Rustic:
...

Maybe it would be an idea to add a "--no-pruning" option to the engine for mate-finding. It would either require a lot of cluttering with if-statements in the search function, or an extra search function without any pruning, which would duplicate code.

[algerbrex]

This is also true in Blunder. With null-move pruning Blunder doesn't find the mate-in-3 until the 7th ply:

...

With null-move pruning disabled, it finds the mate at the 5th ply, like Rustic:
...

Maybe it would be an idea to add a "--no-pruning" option to the engine for mate-finding. It would either require a lot of cluttering with if-statements in the search function, or an extra search function without any pruning, which would duplicate code.

That was my thinking. You'd need to find a way to implement that cleanly...Which is why I'm pushing that problem off to my future self