Urania theme

Total change of functions (first move, threat and mate) of the same white move in different phases.

Scheme:
1.A
1.X ~ 2.A
1.Y a 2.A

Iwanow, Eugeniusz
Wola Gułowska, 1996
2nd Prize
FIDE Album 1995-97

selfmate in 2 moves

Zagoruiko theme

Change of at least two mates in at least three phases.

Scheme:
1.X a 2.A, 1…b 2.B
1.Y a 2.C, 1…b 2.D
1.Z a 2.E, 1…b 2.F

Zagoruiko theme nxm

Change of at “m” mates in “n” phases.

Scheme:
1.A a 2.A1 , 1…b 2.A2 , … 1…m 2.Am
1.B a 2.B1 , 1…b 2.B2 , … 1…m 2.Bm
1.N a 2.Ni, 1…b 2.N2 , … 1…m 2.Nm

cyclic Zagoruiko theme

Cyklic change of two mates in three phases.

Scheme:
1.X a 2.A, 1…b 2.B
1.Y a 2.B, 1…b 2.C
1.Z a 2.C, 1…b 2.A

threat-Zagoruiko theme

Scheme:
1.X ~ 2.A, 1…a 2.D
1.Y ~ 2.B, 1…a 2.E
1.Z ~ 2.C, 1…a 2.F

distributed Zagoruiko theme

Scheme:
1.X a 2.A, 1…b 2.B
1.Y a 2.C
1.Z b 2.D
1.K a 2.E, 1…b 2.F

Nanning Zagoruiko theme

Scheme:
1.X a 2.A, 1…b 2.B
1.Y a 2.B, 1…b 2.C
1.Z a 2.D, 1…b 2.A

Szwedowski, Leopold
Europe Echecs, 1967
2nd Prize
FIDE Album 1965-67

mate in 2 moves

FEN: 1r2R2b/3Q3q/2Npn1b1/3k2p1/Np1B1PP1/1P1p1R1P/6B1/5K2

Le Grand theme

Reciprocal change of mates in the threat and the variation.

Scheme:
1.X ~ 2.A, 1…a 2.B
1.Y ~ 2.B, 1…a 2.A

cyclic Le Grand

Closed cyclic chain of threats and mates after the same defence in three or more phases.

Scheme:
1.X ~ 2.A, 1…a 2.B
1.Y ~ 2.B, 1…a 2.C
1.Z ~ 2.C, 1…a 2.A

double Le Grand

Scheme:
1.X ~ 2.A, 1…a 2.C
1.Y ~ 2.B, 1…b 2.C
1.Z ~ 2.C, 1…a 2.A, 1…b 2.B

double Le Grand condensed

Scheme:
1.X? ~ 2.AB, 1…a!
1.Y ~ 2.A, 1…a 2.B
1.Z ~ 2.B, 1…a 2.A

pseudo Le Grand

Scheme:
1.X ~ 2.A, 1…a 2.B
1.Y ~ 2.B, 1…b 2.A

Hoffmann, Peter
Die Schwalbe, 1989
FIDE Album 1989-91

mate in 2 moves