Problem Display
PID: 277098 (3r4/1Q1B4/1nPkpBN1/2b5/8/3r4/3p4/3K4 w - - 0 1)

Eerkes, Allard Pieter

To Mat, 1954

3r4/1Q1B4/1nPkpBN1/2b5/8/3r4/3p4/3K4

#2

6 + 7


15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION


  • SOUND
  • Sets
    • 1...Rd5
      • 2.Be7#
    • 1...Sd5
      • 2.Be5#
  • Keys
    • 1.c7!
      • threat
        • 2.Qc6#
      • 1...Kxd7
        • 2.cxd8Q#
        • 2.cxd8R#
      • 1...Rxd7
        • 2.Be5#
      • 1...Sxd7
        • 2.Be7#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(b);SBLOCK::B(C)
    • S(d);SBLOCK::B(C)
  • Actual
    • P(B);
    • Threat
      • QAR1(E)
    • Vars
      • K(e);P-FLIGHT,XB(F)::PXR(g)=Q
      • R(g);SBLOCK,XB(F)::B(C)
      • S(d);SBLOCK,XB(F)::B(C)


Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).