Extended cyclic Zilahi

In three phases of a helpmate twomover the roles of three thematic white pieces are cyclically changed: each one mates once and is captured twice. A true cycle occurs when each piece is once captured on the first, once on the second black move, and once survives and eventually mates. Further, for a pure cycle the first white move must be an active sacrifice of a thematic piece.

See also: Cyclic Zilahi.

Gurov, Valery

Probleemblad, 2001

1st Prize

Example: Extended cyclic Zilahi
h#2 3.1... (11+10)

1.Qxd2 b6 2.Sxa5 Sb5#
1.Qxa5 f5 2.Sxd4 Bf4#
1.Qxd4 a7 2.Sxd2 Ra6#

Extended cyclic Zilahi - true cycle.

View in Helpmate Analyzer

FEN: 8/1R6/P2k1pp1/RPpP2P1/p2N1P2/Knq5/B1rB4/r1n5

External links:

Feather, Christopher John

Schach-Report, 1993

3rd Prize

Example: Extended cyclic Zilahi
h#2  (5+13)
b) wBf1→g2 c) wBf1→h3

a) 1.exf3 Rxd4+ 2.Kxd4 Qxd3#
b) 1.Bxf4 Qxe4+ 2.Kxe4 Sh4#
c) 1.exf5 Sxe5 2.Kxe5 Rxf5#

Extended cyclic Zilahi - pure cycle.

View in Helpmate Analyzer

FEN: 1n6/3pK3/3ppn2/2pkpQb1/3rpR2/3ppN2/8/5B2

External links:

Semenenko, Oleksandr

International Chess Composition Day, 2015

1st Prize

Example: Extended cyclic Zilahi
h#6 3.1... (4+6)

1.exd2 e4 2.Kc1 e5 3.d1=Q e6 4.Qxc2 e7 5.Qb2 e8=Q 6.c2 Qxe1#
1.cxd2 c4 2.Sc2 c5 3.Sb4 c6 4.Sa6 c7 5.Sb8 cxb8=Q 6.dxe2 Qb1#
1.dxc2 d4 2.Kxe2 d5 3.Kf3 d6 4.Kf4 d7 5.Kg5 d8=Q+ 6.Kh6 Qh4#

Extended cyclic Zilahi.

View in Helpmate Analyzer

FEN: 8/5K2/8/8/6p1/2ppp3/2PPP3/3kn3

External links: