Problem Display
PID: 273097 (3qr2b/4rpn1/1pBPk1p1/4B1Pp/2N4P/pQ6/8/K7 w - - 0 1)

Kipping, Cyril Stanley

Liverpool and Merseyside Illustrated, 1960

3qr2b/4rpn1/1pBPk1p1/4B1Pp/2N4P/pQ6/8/K7

#2

8 + 11


15239 Valois Notebooks 2023

SOLUTION


  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qh3#
  • Tries
    • 1.Bg3?
      • threat
        • 2.Se3#
      • 1...Sf5+
        • 2.Sb2#
      • 1...Qxd6
        • 2.Sxd6#
      • 1...Kf5!
    • 1.Bf4?
      • threat
        • 2.Se3#
      • 1...Sf5+
        • 2.Sb2#
      • 1...Qxd6
        • 2.Sxd6#
      • 1...Kf5!
  • Keys
    • 1.Bh2!
      • threat
        • 2.Se3#
      • 1...Sf5+
        • 2.Sb2#
      • 1...Kf5
        • 2.Qh3#
      • 1...Qxd6
        • 2.Sxd6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);S_CUTP(g),S_CUTS(h),S_FLIGHT::QAB(B)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAB(B)+S(C)
      • Vars
        • S(h);CHECK,SBLOCK::QAB(B)+S(C)
        • Q(i);XP(H)::QAB(B)+S(C),XQ(i)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(E);
      • Threat
        • QAB(B)+S(C)
      • Vars
        • S(h);CHECK,SBLOCK::QAB(B)+S(C)
        • Q(i);XP(H)::QAB(B)+S(C),XQ(i)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • B(E);
    • Threat
      • QAB(B)+S(C)
    • Vars
      • S(h);CHECK,SBLOCK::QAB(B)+S(C)
      • K(d);S_CUTP(g),S_CUTS(h),S_FLIGHT::QAB(B)
      • Q(i);XP(H)::QAB(B)+S(C),XQ(i)


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).