Extinction Chess: A side is in check if it is threatened to no more have a kind of piece it owned in the diagram position. Promotions to King are allowed.
No.1236Joost de Heer Holland original – 08.09.2017
The mirrored position rsbq1ksr/pppp1p1p/8/8/8/8/PPPPP1P1/RSBQKBR1 is a correct SPG 6.0 Extinction chess composition with two king Schnoebelens: 1. h4 e5 2. h5 e4 3. h6 e3 4. hg7 ef2+ 5. gf8=K+ fg1=K 6. Rg1+ Kf8
(Author)
Very cute. Isn’t it possible to modify the stipulation, in order to get a 2-solutions (via a kind of twin)?
Manfred Rittirsch
January 19, 2018 09:41
There’s a triple setting using consecutive proof games for a Schnoebelen cycle found independently by me and published as no. 11609 in feenschach 225, p. 146.
Very cute. Isn’t it possible to modify the stipulation, in order to get a 2-solutions (via a kind of twin)?
There’s a triple setting using consecutive proof games for a Schnoebelen cycle found independently by me and published as no. 11609 in feenschach 225, p. 146.
The pg6 is Jacobi+