2004 and CYCLONE 50-40-30-20-10-0 years ago

1...Kf4 a 2.Sd3# A
1...e3 b 2.f4# B
1...S~ c 2.Bd6# C

1.Sd4! zz
1...Kf4 a 2.Bd6# C
1...e3 b 2.Sd3# B
1...S~ c 2.f4# A
(1...exf3 2.Sxf3#
1...Sd8, Sh8 2.f4#)

Just 4th problem on Lacny cycle - Ludovit Lacny had found new mechanism.

1.hxg7? th. 2.Bf6# A
1...Kc5 a 2.Bxe3# B
1...Ke5 b 2.Qxc3# C
1...d5!

1.Sd5! th. 2.Bxe3# B
1...Kc5 a 2.Qxc3# C
1...Ke5 b 2.Bf6# A
1...Bxd5 2.Qxd5#

Prototype of the Shedey cycle by Sergei Shedey.

1.Qd8? th. 2.Qxf6+, Rd2+
1...Rxf5 a 2.Rb6+ A c3 3.Bxc3#
1...Rxe6 b 2.Rxf2+ B c3 3.Bxc3#
1...Bxd5 c 2.Rd2+ C
1...Se7!

1.Qxg6? th. 2.Qxf6+, Rd2+
1...Rxf5 a 2.Rxf2+ B Kxd5 3.Qxf5#
1...Rxe6 b 2.Rd2+ C
1...Bxd5 c 2.Rb6+ A c3 3.Bxc3#
1...Rh6!

1.Qf7! th. 2.Qxf6+, Rd2+
1...Rxf5 a 2.Rd2+ C
1...Rxe6 b 2.Rb6+ A K~ 3.Qxe6#
1...Bxd5 c 2.Rxf2+ B c3 3.Bxc3#

Threemover that found its place in history. Complete Lacny cycle by Milan Velimirovic.

1.Bf6? A th. 2.c4#
1...Bd3 a 2.Rxd3# B
1...Bxf6+ b 2.Sxf6# C
1...Qe4!

1.Rd3! B th. 2.c4#
1...Bxd3 a 2.Sf6# C
1...Bf6+ b 2.Bxf6# A
1...Sb2, Sxc3, Se3 2.S(x)e3#

Prototype of the Kiss cycle by Ivan Kiss.

a) 1.Rxb3(b7)! th. 2.Bd5#
1...gxf5(Sb1) a 2.Sd2# A
1...Bxf7(f2) b 2.f3# B
1...Rxe6(Bf1) c 2.Bd3# C
1...Sxd7(Rh1) d 2.Rxh4# D
(1...Be3+ 2.Rxe3(Bf8)#)

b) 1.Rc3! th. 2.Bd5#
1...gxf5(f2) a 2.f3# B
1...Bxf7(Bf1) b 2.Bd3# C
1...Rxe6(Rh1) c 2.Rxh4(Rh8)# D
1...Sxd7(Sb1) d 2.Sd2# A
(1...Be3+ 2.Rxe3(Rh8)#)

One of the hybrid problem series by Torsten Linss. Here the 4-fold Lacny cycle.

1...Rc5 a 2.Rc3+ A RLd4 3.Rxe4+ B dxe4 4.Bf6#
1...Bc5 b 2.Rxe4+ B BLxe4 3.Sxc4+ C dxc4 4.Bf6#
1...Nc5 c 2.Sxc4+ C BLxc4 3.Rc3+ A d4 4.Bf6#

1.Sf6? th. 2.Sd7+ Rxd7 3.Rxe6#
1...Rc5 a 2.Sxc4+ C BLxc4 3.Rc3+ A d4 4.Rxe4# B
        2...Rxc4 3.Sd7+ Rxd7 4.Rxe6#
1...Bc5 b 2.Rc3+ A RLd4 3.Rxe4+ B dxe4 4.Sxc4# C
        2...Bd4 3.Sd7+ Rxd7 4.Rxe6#
1...Nc5 c 2.Rxe4+ B BLxe4 3.Sxc4+ C dxc4 4.Rc3# A
        2...Nxe4 3.Sd7+ Rxd7 4.Rxe6#
1...NLxf6 2.Bxf6+ Kxf6 3.NLd4+ c3 4.NLxh2#
1...NLxh1!

1.NLd3! th. 2.Nf7+ Rxf7 3.Rxe6+ Kf5 4.Sh6#
        2...Kf5 3.Sh6#
1...Rc5 a 2.Rxe4+ B dxe4 3.Rc3+ A Kf5 4.Sh6#
1...Bc5 b 2.Sxc4+ C dxc4 3.Rxe4+ B Kf5 4.Sh6#
1...Nc5 c 2.Rc3+ A d4 3.Sxc4+ C Kf5 4.Sh6#
1...Kf5 2.Sh6+ Ke5 3.Nf7+ Rxf7 4.Rxe6#

A fairy fourmover by Loustau and Aschwanden. Something unbelievable. Though 47 units aboard, both skilled constructors cooperated on reaching the final position well over a year. What it contents: after black cyclic Grimshaw, the complete 3x3 Lacny cycle. Plus complete cycle of 2nd and 3rd moves in all phases, once even the 4th moves included. Completely different phases, and for classic lovers: flight giving key. Take a look at it, I have never seen a better fairy problem!