Stéphane Nicolet

@pb00068 About your patch in https://tests.stockfishchess.org/tests/view/68381f536ec7634154f9d1a9 : Be careful that as soon as you use the stack to store info (like using `ss->extension = -2;` instead of a local variable...

I have pushed a test there with Elo-gaining bounds: https://tests.stockfishchess.org/tests/view/68391e446ec7634154f9d27b The test does two things: a) it relaxes a little bit the margin for double extensions, which should allow more...