MESON Chess Problem Database

Problem Display
PID: 68366 (k7/p1K1p3/8/4Q3/6pr/8/3n2b1/8 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1949

k7/p1K1p3/8/4Q3/6pr/8/3n2b1/8

#2

2 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rh8
      • 2.Qxh8#
    • 1...Bf1
      • 2.Qd5#
    • 1...Bh3
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Sf3
      • 2.Qe4#
      • 2.Qd5#
    • 1...Se4
      • 2.Qd5#
    • 1...a5
      • 2.Qxa5#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Qe8#
        • 2.Qb8#
      • 1...a5
        • 2.Qa6#
        • 2.Qxa5#
        • 2.Qb8#
      • 1...a6
        • 2.Qxa6#
        • 2.Qb8#
      • 1...Bc6
        • 2.Qxc6#
        • 2.Qb8#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Rh8!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qb8#
      • 1...Rh8
        • 2.Qxh8#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Sb3
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(d);N_GUARD::QAB1(A),XR(d)
    • B(b);N_GUARD::QAB(A)
    • B(b);N_GUARD::QAB(A),XB(b)
    • S(a);S_CUTB(b)::QAB(A)
    • P(e);OGATEB::QAR(A),XP(e)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);N_GUARD::QAB1(A),XB(b)
      • Refutation
        • R(d);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • R(d);N_GUARD::QAB1(A),XR(d)
      • B(b);N_GUARD::QAB1(A),XB(b)
      • S(a);OGATE::QAB(A),XB(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).