Vertical cycles

Viktor Chepizhny
The Problemist 1969

5 Rice cycle

1...exd3 1...cxd3

set: 2.Sc6# 2.Se6#

1.Se3? th. 2.Rd5# 2.Se6# 2.Sf5#

1.Sc3! th. 2.Rd5# 2.Sf5# 2.Sc6#

(try is refuted by 1...c3!)

#2 (12+9)
Promoted force

V. Yashuk
2nd Prize Rudenko-50 1988

6 Ukrainian cycle

1...Qe3

1.Bc5? th. 2.Se7# 2.Sa7#

1.Qa5? th. 2.Sa7# 2.Rd6#

1.Qe4! th. 2.Rd6# 2.Se7#

(tries are refuted by 1...Qc5! and 1...Qc8! respectively)

#2 (8+7)

Touw Hian Bwee
D. Dharmawan
Hidejat Maruta
1st Prize Probleemblad 1972

7 Ceriani cycle

1.Bxf6! th. 2.Be7+

2...Sxe5

1...Bxd5 2.fxe5+ - 3.Bxe5#

1...exd5 2.Bxd5+ - 3.Qxe5#

1...cxd5 2.Qxe5+ - 3.fxe5#

#3 (13+10)

Václav Kotesovec
2nd Prize Sachova Skladba 1987

8 Reeves cycle

1.Gxc3! th. 2.Gxf6#

1.Gxf6! th. 2.Gxc6#

1.Gxc6! th. 2.Gxc3#

#2 (13+11)
5+1 grasshopper, 2+0 nightrider
3 solutions

Comments to Juraj Lörinc.
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