March 29th

Olof Wilhelm Robert Sahlberg (29-03-1837 - 06-07-1922) Swedish composer

Robert Sahlberg "Problem", September 1969 ‎[Thanks to Александр Никитин]

Olof Sahlberg can be quoted for his success in the 5^th American Chess Congress:

Sahlberg, Olof Wilhelm Robert
5^th American Chess Congress, 1880
1^st Prize, Set

#2

9 + 4

Show Solution

1.Rdd6? (2.Re5#)
but 1...Sd4!
1.Rde7? ZZ
but 1...Sd4!
1.Bd1! ZZ

1...Kxe6 2.Qg4#
1...Se2~ 2.Nd4#
1...Sc5~ 2.Qe4#[A]
1...Rh5/Rh4/Rxh3/Rh7/Rh8/Rf6 2.Rf6#
1...Rg6 2.Re5#
1...Rxe6 2.Sh4#

A devilishly difficult key!