MESON Chess Problem Database

Problem Display
PID: 21956 (1K5b/1P2P2r/2k2N2/5b2/nQ1P4/N7/1n1r4/8 w - - 0 1)

Kipping, Cyril Stanley

Hull Times, 1922

1K5b/1P2P2r/2k2N2/5b2/nQ1P4/N7/1n1r4/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.d5#
    • 1...Re2
      • 2.d5#
    • 1...Rf2
      • 2.d5#
    • 1...Rg2
      • 2.d5#
    • 1...Rdh2
      • 2.d5#
    • 1...Bd3
      • 2.d5#
    • 1...Bc8
      • 2.bxc8Q#
      • 2.bxc8R#
    • 1...Sd3
      • 2.d5#
    • 1...Sc3
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sb6
      • 2.Qc5#
  • Tries
    • 1.e8Q+?
      • 1...Bd7
        • 2.Qe4#
      • 1...Rd7!
  • Keys
    • 1.e8S!
      • threat
        • 2.Qd6#
        • 2.Qb5#
      • 1...Rxb7+
        • 2.Qxb7#
      • 1...Rxd4
        • 2.Qb5#
      • 1...Rd7
        • 2.Qb5#
      • 1...Bd3
        • 2.Qd6#
        • 2.d5#
      • 1...Sc4
        • 2.Qb5#
      • 1...Sc3
        • 2.Qc5#
        • 2.Qd6#
      • 1...Sc5
        • 2.Qxc5#
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • R(b);N_GUARD::P(C)
    • B(d);S_CUTR(b)::P(C)
    • B(d);OGATE::PXB(d)=Q
    • S(a);S_CUTR(b)::P(C)
    • S(c);N_GUARD::QAR1(B)
    • S(c);N_GUARD::QAR1(B),XS(c)
  • Tries
    • Try
      • P(F);CHECK
      • Vars
        • B(d);N_GUARD,P_SPINB(d)::QAB(F)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • P(F);
    • Threat
      • DUALS(2)
    • Vars
      • R(f);CHECK,OGATE,XP(E)::QAB1(B),XR(f)
      • R(b);XP(C)::QAB1(B)
      • R(f);::QAB1(B)
      • S(a);::QAB1(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).