MESON Chess Problem Database

Problem Display
PID: 67856 (k7/1pB4K/2B5/2Q5/2p4p/rb6/1rp5/q7 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1948

k7/1pB4K/2B5/2Q5/2p4p/rb6/1rp5/q7

#2

4 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qf8#
    • 1...Ba2
      • 2.Qxa3#
    • 1...Ba4
      • 2.Qa5#
  • Tries
    • 1.Qb6?
      • threat
        • 2.Bxb7#
        • 2.Qxb7#
      • 1...bxc6
        • 2.Qb8#
      • 1...Qh1
        • 2.Qxb7#
      • 1...Ba2
        • 2.Bxb7#
      • 1...Ba4
        • 2.Bxb7#
        • 2.Qa5#
        • 2.Qa6#
      • 1...Ra7!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...bxc6
        • 2.Qb8#
      • 1...Ra7
        • 2.Qf8#
      • 1...Ba2
        • 2.Qxa3#
      • 1...Ba4
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::QAR(A)
    • B(e);N_GUARD,S_CUTQ(a)::QAR(A),XR(d)
    • B(e);S_CUTR(d)::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);N_SPINP(h),OGATE,XB(B)::QAR1(A)
        • Q(a);::QAB1(A),XP(h)
        • B(e);::B(B),XP(h)
      • Refutation
        • R(d);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(h)
    • Vars
      • K(i);N_SPINP(h),P-FLIGHT::QAR1(A),XP(h)
      • P(h);N_SPINP(h),OGATE,XB(B)::QAR1(A)
      • R(d);SBLOCK::QAR(A)
      • B(e);N_GUARD,S_CUTQ(a)::QAR(A),XR(d)
      • B(e);S_CUTR(d)::QAR(A)
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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).