[Retros] 7 g7# again

[Noam Elkies]

Let's not forget this approach (also for the capturing tasks):

  1 e4 g5  2 Qh5 g4  3 Nh3 gxh3  4 g4 Bg7  5 g5 Be5  6 g6 f6  7 g7#

[C+ Popeye in under 0.1 second]

Or, start a separate task category for discovered checkmates
(and also double checkmates, for the capturing moves).

NDE