Cycle of promotions
Two pawns of one or both sides are cyclically promote to three or four different pieces.
See also: Exchange of promotions; Changed promotions; Promotion.
Husserl, Gideon
Die Schwalbe, 1974
3rd HM
h#4 3.1... (2+3)
1.g1=S+
Kh4
2.Kg2
Sd3
3.Kh1
Kg3
4.f1=B
Sf2#
1.g1=R
Kh4
2.Kg2
Sd3
3.Kh1
Kh3
4.f1=S
Sf2#
1.g1=B
Kh4
2.Kg2
Se2
3.Kh1
Kh3
4.f1=R
Sg3#