Onkoud-St German theme

Exchange of indirect unpins of two white pieces by two black pieces.

See also: Unpin.

Onkoud, Abdelaziz

Scacco!, 1995

3rd Prize

Example: Onkoud-St German theme
h#2 2.1... (6+10)

1.Kf4 gxh5 2.Se7 Rg4#
1.Kf6 Rxh5 2.Sf4 g5#

View in Helpmate Analyzer

FEN: 3q4/5ppb/3P4/R2nkPRp/r5PK/4bp2/8/8

External links:

Zarur, Almiro Elias

Dalla Rosa JT, 1964

1st Comm.

Example: Onkoud-St German theme
h#2 2.1... (5+10)

1.Sfe2 Sgf4 2.Se6 Se3#
1.Sfe6 Sdf4 2.Se2 Se3#

View in Helpmate Analyzer

FEN: 3Br1b1/8/8/1p1N4/R2n1nk1/5pp1/K5Nq/4r3

External links:

Caillaud, Michel

Saint-Germain-au-Mont-d'Or TT, 2016

1st Prize

Example: Onkoud-St German theme
h#3 2.1... (9+15)

1.Rc3 Sf1 2.exf1=S Bd6 3.Sg3 Sd3#
1.Rg3 Sd1+ 2.exd1=S Bf4 3.Sdc3 Sc4#

View in Helpmate Analyzer

FEN: 1B6/8/1p2r3/bP1p2pp/3Pp1bq/1P2r2p/Pk1NpN1R/nn2K3