April 9th

Ефим Наумович Рухлис (09-04-1925 - 05-02-2006) Ukrainian-Uzbek-Israeli composer and FIDE Master(Efim Naumovich Rukhlis)

Efim Rukhlis
[selivanov.ru]

International Judge and twomover composer, Efim Rukhlis revolutionized the twomovers in the 1960s with his theme, that involves at least two transferred mates and on the same black defences two changed mates.
He composed more than 300 Ideal-Rukhlis twomovers, according to Milan Velimirović in his article "Ideal Ruchlis - A comprehensive overview" in Mat Plus Review, 9-10. Spring-Summer 2009.

Let's see an example from 1946:

Рухлис, Ефим Наумович
Свердловский конкурс 1946
1^st-2^nd Prize

#2

9 + 9

Show Solution

Set play:

1...Bd4 2.Qe4#
1...Rd4 2.Sc3#

1.d4! (2.Sb6#)

1...Bxd4 2.Sf6#
1...Rxd4 2.Sb4#
1...Rd3 2.Qxe4#
1...Bd3 2.Sc3#
1...Sxd7 2.Qe6#

Grimshaw, Rukhlis