Zagoruiko theme

At least three twins (or solution groups) with at least two changed mates (or continuations). A modified direct-mate theme.

Castellari, Umberto

Probleemblad, 1962

1st Prize

Example: Zagoruiko theme
h#2* 2.1... (8+10)

1...Qg5 2.Qc2 Qa5#
1...Qg5 2.Qd2 Qc5#
1...Qxe4 2.Qc2 Qxd4#
1...Qxe4 2.Qd2 Qc6#

1.dxe3 Rxe4 2.Qc2 Bb4#
1.dxe3 Rxe4 2.Qd2 Rc4#

Zagoruiko 3x2.

View in Helpmate Analyzer

FEN: 8/8/B2B4/7p/P2pp2R/RnkqQ3/1p2P3/brn3K1

External links:

Feather, Christopher John

Broodings, 2003

Example: Zagoruiko theme
h#2 2.1... (6+10)
b) bPc6→b6 +c) bKe5→d3

a)
1.Bc3 Qb1 2.Bd4 Qb8#
1.Bd2 Qc1 2.Bf4 Qc5#
b)
1.Bc3 Qc1 2.Bd4 Qc7#
1.Bd2 Qd1 2.Bf4 Qd5#
c)
1.Bc3 Qd1+ 2.Kc4 Qd5#
1.Bd2 Qb1+ 2.Ke3 Qe4#

Cyclic Zagoruiko 3x2.

View in Helpmate Analyzer

FEN: 5Knr/8/2p2p2/p3kP1n/6P1/P4B2/5pp1/4b2Q

External links:

Husserl, Gideon

Sinfonie Scacchistiche, 1986

Example: Zagoruiko theme
h#1.5 3.1... (8+9)
b) wSf7→c7 c) wSf7→b7

a)
1...Qf8 2.Rd5 Qb4#
1...Qh1 2.Rc5 Qd1#
1...Qh2 2.Re5 Qxe5#
b)
1...Qf8 2.Re5 Qb4#
1...Qh1 2.Rd5 Qxd5#
1...Qh2 2.Rc5 Qf4#
c)
1...Qf8 2.Rc5 Qxc5#
1...Qh1 2.Re5 Qd1#
1...Qh2 2.Rd5 Qf4#

Zagoruiko 3x3.

View in Helpmate Analyzer

FEN: 8/5N1q/r4PbQ/r4pP1/p2k2P1/1Pp1p3/5N2/K7

External links:

Hernitz, Zvonimir

Sinfonie Scacchistiche, 1966

1st Prize

Example: Zagoruiko theme
h#2 8.1... (5+12)

1.Kd5 Qxb1 2.e5 Qa2#
1.Kd5 Qxb1 2.e6 Qxb5#
1.Kd5 Qxf2 2.e5 Qxf7#
1.Kd5 Qxf2 2.e6 Qd4#
1.Kf5 Qc1 2.e5 Qc8#
1.Kf5 Qc1 2.e6 Qg5#
1.Kf5 Qxh1 2.e5 Qh3#
1.Kf5 Qxh1 2.e6 Qh5#

Zagoruiko 4x2.

View in Helpmate Analyzer

FEN: 3B4/4pp2/1K1pk1n1/1p6/p7/3P2p1/4Npn1/1b3Q1q

External links:

Oudot, Jean

Tidskrift för Schack, 1969

3rd Prize

Example: Zagoruiko theme
h#2 8.1... (8+12)

1.d2 Sc3+ 2.Kf4 Se2#
1.c3 Sb4+ 2.Kf4 Sxd3#
1.Qg6 Sxe3+ 2.Kxf6 Sg4#
1.Rxf6 Sxf6+ 2.Kf4 Sxh5#
1.Rg6 Sf4+ 2.Kxf6 Sxh5#
1.Bg6 Se7+ 2.Kxf6 Sg8#
1.Sxe6 Sc7+ 2.Kf4 Sxe6#
1.Sg6 Sb6+ 2.Kxf6 Sd7#

Zagoruiko 4x2.

View in Helpmate Analyzer

FEN: 4Rn2/6pb/2n1PP1r/rR1Nk1bq/2p1P3/3ppP2/6K1/8

External links: