Selfpin key (x3)* —Mäkihovi —Pin mates

 

1.Rg1? [2.Rxe1,  3.Qxf3#]

  1...Sg2(a) 

    2.Qxg2 (A), 3.Qxf3#

    2.Sb4+ (B) Kc5  3.Sfd3#

  1...Qxc1!

 

1.Kh6? [2.Rg8, 3.Rc8#]

  1...Sg2(a)  2. Sb4+ (B) Kc5  3.Sfd3#

  1...fxg4!

 

1.Kxf5! [2.Rg8, 3.Rc8#]

  1...Sxd3  2.Qxf3+ Kc5  3.Sxd3#

  1...Sxb3  2.Rxc2+

   2...Sc5  3.Sb4#

   2...Sxc2  3.Qxf3#

  1...Sg2 (a)  2.Qxg2+ (A) 3.Qxf3#

 

Author´s note: The main idea of this task is a key in which the white King self-pin three times and in turn the 3 white pieces, now pinned, remove flight squares from the white King, always a paradoxical image.