Problem Display
PID: 272803 (8/6K1/3N4/2bpkP2/3R4/3pp1P1/1Q6/8 w - - 0 1)

Williams, Albert H

Liverpool Weekly Mercury, 1901

(First published on Sat Jun 1 1901)

8/6K1/3N4/2bpkP2/3R4/3pp1P1/1Q6/8

#2

6 + 5


15239 Valois Notebooks 2023

SOLUTION


  • SOUND
  • Keys
    • 1.Qb7!
      • threat
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Kxd4
        • 2.Qb2#
      • 1...Kxd6
        • 2.Rxd5#
      • 1...Bxd4
        • 2.Qe7#
      • 1...Bxd6
        • 2.Qxd5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(C)::QAB(A)
      • K(e);P_SPINP(d),S_FLIGHT,XS(E)::R1(C),XP(d)
      • B(c);SBLOCK,XR(C)::QAR2(A)
      • B(c);XS(E)::QAR1(A),XP(d)


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).