Piran theme
In the set play and in the solution, the mates are delivered by the same white piece, using the pin of the same black piece.
Note: In Helpmate Analyzer, the Piran theme requires that the pin in the set play and in the solution is not identical. There must be a difference either in the pinned piece’s position or in the black king’s.
See also: Transferred pin; Pin restoration theme; Onkoud theme.
Bišćan, Dragutin
Problem, 1959
h#2* (7+9)
1...Rd1
2.Qf5+
Sf6#
1.Kd3
Ke7
2.Qe4+
Se5#
Kniest, Peter
Aachener Nachrichten, 1967
h#2* (6+5)
1...Bxc3
2.Kxc3
Rc4#
1.Qb4
Rxc3+
2.Kxc3
Rc4#