[Retros] trying to find a #0,5 retroproblem

[Gligor Denkovski]

Hi, Roberto

See that problem

Gligor Denkovski & Miroslav Stosic
Mlad borec 1971 (v)

Kg1 Rh1 Bc1 Bh5 Sg6 Sh4 Ph3 - Kg3
#1.5
1.Bf4#? 1.Sf5#? No last black move!
Retro: The last black move was Kg2-g3, before wK move from e1 to f1 (first
part of 0-0).
1.Rf1-f1!! (ends 0-0) Kxh3 2.Rf3#

Best,
Gligor