Nº25 Jorge Lois

Publicado el 02/07/2016 a 268 × 268 en Jorge Joaquín Lois ( distinguidos 2010-2021)

h#3.5 (7+13) C+
a) diagram
b) Ke4< -->Pf4

Jorge Lois
Die Schwalbe 2015

a) diagram
1. .. Rb3 2. Kxd5 Ra3 3. Ke4 Bb3 4. Kf3 Bd5#
b) Ke4< -->Pf4
1. .. Bb3 2. Ke3 Ba2 3. Kd4 Rb3 4. Kxd5 Rd3#
Theme and comment:
Double creation of a direct white battery on same square [b3] with switchback W1 & W2 in each solution.
Four batteries on same square.
Interchanged W1 & W3 (AB-BA)
White Umnov W2 & W3