MESON Chess Problem Database

Problem Display
PID: 68347 (4bK2/5p2/QB6/P2pp3/k5qR/P2R2r1/7b/NN3B2 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1949

4bK2/5p2/QB6/P2pp3/k5qR/P2R2r1/7b/NN3B2

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4+
      • 2.Rxb4#
    • 1...d4
      • 2.Qc4#
    • 1...e4
      • 2.Rd4#
  • Tries
    • 1.Rxg4+?
      • 1...d4
        • 2.Qc4#
      • 1...e4
        • 2.Rd4#
      • 1...Rxg4!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qxe8#
      • 1...Qb4+
        • 2.Rxb4#
      • 1...Kb5
        • 2.Sc3#
      • 1...Bb5
        • 2.Qc2#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bd7
        • 2.Qxd7#
      • 1...d4
        • 2.Qc4#
      • 1...e4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(d);CHECK,OGATE::R1(F),XQ(d)
    • P(e);N_GUARD,N_SPINQ(d),S_CUTQ(d)::QAR2(H)
    • P(f);N_GUARD,N_SPINQ(d),S_CUTQ(d)::R(E)
  • Tries
    • Try
      • R(F);CHECK,XQ(d)
      • Vars
        • P(e);N_GUARD,P_SPINP(e)::QAR2(H)
        • P(f);N_GUARD,P_SPINP(f)::R(E)
      • Refutation
        • R(b);XR(F)
  • Actual
    • Q(H);
    • Threat
      • QAB(H),XB(h)
    • Vars
      • Q(d);CHECK,OGATE::R1(F),XQ(d)
      • K(c);N_SPINQ(d),S_FLIGHT::S(B)
      • B(h);SBLOCK::QAB(H)
      • B(h);N_GUARD::QAB(H),XB(h)
      • P(e);N_GUARD,N_SPINQ(d),S_CUTQ(d)::QAR2(H)
      • P(f);N_GUARD,N_SPINQ(d),S_CUTQ(d)::R(E)
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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).