MESON Chess Problem Database

Problem Display
PID: 67892 (7k/1n6/7K/2p3Q1/1pr2p2/1qb5/8/1b6 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1949

7k/1n6/7K/2p3Q1/1pr2p2/1qb5/8/1b6

#2

2 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qg7#
    • 1...Be1
      • 2.Qg7#
    • 1...Bd2
      • 2.Qg7#
    • 1...Bg7+
      • 2.Qxg7#
    • 1...Sa5
      • 2.Qd8#
    • 1...Sd8
      • 2.Qxd8#
  • Tries
    • 1.Qe5+?
      • 1...Kg8
        • 2.Qe8#
      • 1...Bxe5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qf8#
        • 2.Qe8#
      • 1...Bg7+
        • 2.Qxg7#
      • 1...Kg8
        • 2.Qe8#
      • 1...Qa4
        • 2.Qf8#
      • 1...Rd4
        • 2.Qg7#
      • 1...Re4
        • 2.Qh7#
      • 1...Bg6
        • 2.Qf8#
      • 1...Bh7
        • 2.Qxh7#
      • 1...Sd6
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(e);S_CUTB(c)::QAB1(A)
    • B(c);N_GUARD::QAB1(A)
    • B(c);CHECK,N_GUARD::QAB1(A),XB(c)
    • S(h);N_GUARD::QAR(A)
    • S(h);N_GUARD::QAR(A),XS(h)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(i);P-FLIGHT::QAR2(A)
      • Refutation
        • B(c);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • B(c);CHECK,N_GUARD::QAB1(A),XB(c)
      • K(i);P-FLIGHT::QAR2(A)
      • Q(b);::QAR2(A)
      • R(e);S_CUTB(c)::QAB1(A)
      • R(e);S_CUTB(a)::QAR1(A)
      • B(a);::QAR2(A)
      • B(a);N_GUARD::QAR1(A),XB(a)
      • S(h);::QAR2(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).