MESON Chess Problem Database

Problem Display
PID: 139654 (1K6/8/k1bn4/2R5/8/8/8/1Q5R w - - 0 1)

Davis, Edward

Kipping, Cyril Stanley

The Problemist, 1937

1K6/8/k1bn4/2R5/8/8/8/1Q5R

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qa2+?
      • 1...Kb6
        • 2.Qa5#
        • 2.Qa7#
      • 1...Ba4!
    • 1.Qa1+?
      • 1...Kb6
        • 2.Qa5#
        • 2.Qa7#
      • 1...Ba4!
  • Keys
    • 1.Rh6!
      • 1...Bb5
        • 2.Qxb5#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Bh1
        • 2.Qb5#
      • 1...Bg2
        • 2.Qb5#
      • 1...Bf3
        • 2.Qb5#
      • 1...Ba4
        • 2.Qb7#
      • 1...Be4
        • 2.Qb5#
      • 1...Bd5
        • 2.Qb5#
      • 1...Bb7
        • 2.Qb5#
        • 2.Qxb7#
      • 1...Bd7
        • 2.Qb7#
      • 1...Ba8
        • 2.Qb5#
      • 1...Be8
        • 2.Qb7#
      • 1...Sc4
        • 2.Qb5#
        • 2.Qb7#
      • 1...Se4
        • 2.Rhxc6#
        • 2.Qb5#
        • 2.Qb7#
      • 1...Sf5
        • 2.Rhxc6#
        • 2.Qb5#
        • 2.Qb7#
      • 1...Sb7
        • 2.Rhxc6#
        • 2.Qb5#
        • 2.Qxb7#
      • 1...Sf7
        • 2.Rhxc6#
        • 2.Qb5#
        • 2.Qb7#
      • 1...Sc8
        • 2.Qb5#
        • 2.Qb7#
      • 1...Se8
        • 2.Rhxc6#
        • 2.Qb5#
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • Q(A);CHECK
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • R(B);
    • Vars
      • B(b);N_GUARD,P_SPINS(c)::QAB1(A),XB(b)
      • S(c);N_GUARD,P_SPINB(b)::QAB1(A),XS(c)
      • B(b);N_GUARD,P_SPINS(c)::QAB1(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).