MESON Chess Problem Database

Problem Display
PID: 69971 (3q1R1r/2Pk1B1n/p7/KPBNp3/4P2b/3Q2pr/8/8 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1950

3q1R1r/2Pk1B1n/p7/KPBNp3/4P2b/3Q2pr/8/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qg5
      • 2.c8Q#
      • 2.c8B#
    • 1...Qf6
      • 2.c8Q#
      • 2.c8B#
    • 1...Qxc7+
      • 2.Sb6#
    • 1...Qe7
      • 2.c8Q#
      • 2.c8B#
    • 1...Qb8
      • 2.cxb8S#
    • 1...Sg5
      • 2.cxd8Q#
      • 2.cxd8R#
    • 1...Sf6
      • 2.cxd8Q#
      • 2.cxd8R#
    • 1...g2
      • 2.Qxh3#
  • Keys
    • 1.Kb6!
      • threat
        • 2.Se7#
      • 1...Qf6+
        • 2.Sxf6#
      • 1...Qxc7+
        • 2.Sxc7#
      • 1...Qb8+
        • 2.cxb8S#
      • 1...Kc8
        • 2.Be6#
      • 1...Qe7
        • 2.Sf6#
        • 2.Sxe7#
        • 2.c8Q#
        • 2.c8B#
      • 1...Qa8
        • 2.Sf6#
      • 1...Be7
        • 2.Sxe7#
      • 1...Sf6
        • 2.cxd8Q#
        • 2.cxd8R#
      • 1...g2
        • 2.Qxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(h);N_PINP(G)::P=Q
    • Q(h);CHECK,SBLOCK,XP(G)::QAR(A)+S(F),DCHECK
    • Q(h);N_PINP(G)::PXQ(h)=S
    • S(g);S_CUTB(c)::PXQ(h)=Q
    • P(a);OGATE::QAB(A),XR(b)
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • QAR(A)+S(F)
    • Vars
      • Q(h);CHECK,N_PINP(G)::QAR(A)+S(F),DCHECK,XQ(h)
      • Q(h);CHECK,XP(G)::QAR(A)+S(F),XQ(h)
      • Q(h);CHECK,N_PINP(G)::PXQ(h)=S
      • K(f);P_SPINQ(h),S_FLIGHT::B(H)
      • Q(h);N_PINP(G)::QAR(A)+S(F),DCHECK
      • B(c);::QAR(A)+S(F),XB(c)
      • S(g);S_CUTB(c)::PXQ(h)=Q
      • P(a);OGATE::QAB(A),XR(b)
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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).