Problem Display
PID: 201438 (8/p1K1n3/3Q4/p1Np4/3k4/2qrpP2/BB1P4/8 w - - 0 1)

Kipping, Cyril Stanley

Eskilstuna Kuriren, 1922

8/p1K1n3/3Q4/p1Np4/3k4/2qrpP2/BB1P4/8

#2

7 + 8


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Sets
    • 1...Qxb2
      • 2.Se6#
    • 1...Sf5
      • 2.Qxd5#
    • 1...Sc6
      • 2.Se6#
      • 2.Qxd5#
    • 1...Sg6
      • 2.Qxd5#
    • 1...Sc8
      • 2.Qxd5#
    • 1...Sg8
      • 2.Qxd5#
  • Keys
    • 1.Ba3!
      • threat
        • 2.Qf4#
        • 2.Qf6#
      • 1...Qxc5+
        • 2.Bxc5#
      • 1...Qxd2
        • 2.Qf6#
      • 1...Qxa3
        • 2.Se6#
      • 1...exd2
        • 2.Qf4#
      • 1...Qb3
        • 2.Qf4#
      • 1...Qb4
        • 2.Se6#
      • 1...Sc6
        • 2.Se6#
        • 2.Qf4#
        • 2.Qxd5#
      • 1...Sg6
        • 2.Qxd5#
      • 1...Sg8
        • 2.Qf4#
        • 2.Qxd5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_PINS(E),N_SPINQ(a),XB(B)::S(E)
    • S(h);N_GUARD::QAR1(F),XP(f)
  • Actual
    • B(B);N_PINQ(a)
    • Threat
      • DUALS(2)
    • Vars
      • Q(a);CHECK,OGATE,XS(E)::B(B),XQ(a)
      • Q(a);N_PINS(E),XP(C)::QAB(F)
      • Q(a);N_PINS(E),XB(B)::S(E)
      • P(c);XP(C)::QAR2(F)
      • Q(a);N_PINS(E)::QAR2(F)
      • Q(a);N_PINS(E)::S(E)
      • S(h);N_GUARD::QAR1(F),XP(f)


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).