1.Rf5+ Ke7 2.Ke5 Bf3 3.Bd4 Sd3#
1.Rc4 Sd3 2.Kd5 Ke7 3.Bd4 Bf3#
The same white moves appear in a cyclic order and interestingly lead to two quite different ideal mates.[MV]
1.Qf8 Bb1 2.Qf4 Rc2 3.Ke4 Rd2#
1.Qa6 Rh4 2.Qd3 Bg4 3.Ke4 Be6#
Double Indian. Geomatrically interesting relation of BQ, WR and WB locations prevent the alternation in the BQ to path.[MV]
545. Sinisa Perunicic Yugoslavia
h#3
211111
4+3
1.Rd3 Kf4 2.Sc3: Se3+ 3.Kd4 Se6#
1.Sc3: Kd6 2.Kd4 Sd2 3.Rd3 Sf5#
Miniature with cyclic change of black moves with ideal mates.[A]
546. Leonid Makaronez & Semion Shifrin Israel
h#3
b) BRe7-->b4
c) BKc2-->b2
3+8
a) 1.Kd3 Bc8 2.e1B Re2 3.Bc3 Ba6:#
b) 1.Kc3 Bd7 2.e1S Ba4 3.Sd3 Rc2#
c) 1.Ka1 Be6 2.e1R Bd5: 3.Rb1 Ra2#
Three minor promotions of the unpinned BP. The gradual shortening of first white moves are charming.[MV]
547. Jorma Paavilainen Finland
h#3
b) BKe3-->d3
6+9
a) 1.Qf4: Bc7 2.Qf1 Rf1: 3.Bd3 Bf4#
b) 1.Qc3: Rc7 2.Qe1 Be1: 3.Rd4: Rc3#
Different elements in a hopefully coherent form.[A]
... More than coherent diagonal/orthogonal presentation of Umnov, annihilation, BQ sacrifice and delayed Umnov.[MV]
548. Tode Ilievski Macedonia
h#3
b) WPg3-->g4
7+10
a) 1.Qa4: Bc6 2.Sf3 Be8 3.Qd4 Bg6#
b) 1.Qb7: Rc4 2.Sf4: Rc3: 3.Qd5 Re3#
Zilahi made by unpin captures and "black Umnov".[MV]
549. Vladan Vuckovic Yugoslavia
h#4
3+1
1.Kb4 Ke3 2.Kc3 Sb3 3.Kc2 Kf2 4.Kd1 Se3#
The mate must be on the edge, but the BK prefers another one.[A]
This and following two originals "survived" the search for the maching examples on Niemann Collection CD.
550. Vladan Vuckovic Yugoslavia
h#4
4+1
1.Ka7: Kf6 2.Kb6 Ke7 3.Kc7 Sa6+ 4.Kc8 Sd6#
BK takes the most distant knight and then goes carefuly around remained two.[A]
551. Vladan Vuckovic Yugoslavia
h#4
4+1
1.Ke1 Kc2 2.Kf2 Kb1 3.Ke1 Sf3+ 4.Kd1 Sc3#
Switchback, but "from far away".[A]
552. Borislav Stojanovic Yugoslavia
h#6
3+3
1.b5 Bb6 2.Kb4 a4 3.ab6 a5 4.Ka4 a6 5.Ka5 a7 6.Ka6 a8Q#
A rare example with sacrifice of the only white officer in a long helpmate with a subtle determination of black moves. The basic idea is taken from Abdurahmanovic's fourmover (see diagram below), but implemented in a quite different way.[MV]