[Retros] Fastest maximummer mate

[Noam Elkies]

Joost de Heer <joost at sanguis.xs4all.nl> writes:


> Am I understanding something wrong? There's a double maximummer mate

> in 5.5: [...] With only whitemax or blackmax it's even faster:


Juha's problem is an *SPG* double maximummer; each of the shorter
maximummer mates you give can be reached in dual ways.

NDE