MESON Chess Problem Database

Problem Display
PID: 266933 (4kr2/2KNpq2/6QN/5b2/8/B7/8/8 w - - 0 1)

Armeni, Alberto

Zaldo MT (Problemas), 2019

4kr2/2KNpq2/6QN/5b2/8/B7/8/8

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rg8
      • 2.Qxf7#
    • 1...Rh8
      • 2.Qxf7#
  • Keys
    • 1.Qc6!
      • threat
        • 2.Sf6#
        • 2.Qa8#
      • 1...Bxd7
        • 2.Qxd7#
      • 1...Qb3
        • 2.Sf6#
      • 1...Qc4
        • 2.Sf6#
      • 1...Qd5
        • 2.Sf6#
      • 1...Qf6
        • 2.Sxf6#
        • 2.Qa8#
      • 1...Rg8
        • 2.Qa8#
      • 1...Rh8
        • 2.Qa8#
      • 1...Be4
        • 2.Sf6#
      • 1...e5
        • 2.Qa8#
      • 1...e6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD::QAB1(B),XQ(c)
  • Actual
    • Q(B);N_PINQ(c)
    • Threat
      • DUALS(2)
    • Vars
      • B(a);OGATE,P_SPINB(a),XS(E)::QAB1(B),XB(a)
      • Q(c);::QAB(B)+S(E),DCHECK
      • Q(c);P_PINQ(B)::QAB(B)+S(E),DCHECK
      • R(e);::QAR(B)
      • B(a);::QAB(B)+S(E),DCHECK
      • P(b);P_PINS(E)::QAR(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).