Friedrich Chlubna
Stella Polaris (c), 1969
Correction Peter S. Krug
1.Kb5 Nb8
1…Nc7+ main 2.Kc6 Ne8 3.Kd7 Nf6+ 4.Ke7! (4.Ke6? Ng4 5.Nh6 Nxh6) 4…Ng4 5.Nh6!
Nxh6 6.Kf8! Nf5 7.Bb2+ Ng7 8.Bxg7#]
2.Bf4 Nd7 3.Rc6 Nf8 4.Be5+ Kg8 5.Nh6#
Unión Argentina de Problemistas de Ajedrez
Sitio sobre problemas de ajedrez y temática relacionada.
Friedrich Chlubna
Stella Polaris (c), 1969
Correction Peter S. Krug
1.Kb5 Nb8
1…Nc7+ main 2.Kc6 Ne8 3.Kd7 Nf6+ 4.Ke7! (4.Ke6? Ng4 5.Nh6 Nxh6) 4…Ng4 5.Nh6!
Nxh6 6.Kf8! Nf5 7.Bb2+ Ng7 8.Bxg7#]
2.Bf4 Nd7 3.Rc6 Nf8 4.Be5+ Kg8 5.Nh6#