MESON Chess Problem Database

Problem Display
PID: 165781 (kBK5/8/1p6/q3p3/QN1n4/8/8/6b1 w - - 0 1)

Nicolaescu, Georghe

Problemskak, 2017

kBK5/8/1p6/q3p3/QN1n4/8/8/6b1

#2

4 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qa6+
      • 2.Qxa6#
    • 1...Qa7
      • 2.Qxa7#
    • 1...Sc2
      • 2.Qc6#
    • 1...Se2
      • 2.Qc6#
    • 1...Sb3
      • 2.Qc6#
    • 1...Sf3
      • 2.Qc6#
    • 1...Sf5
      • 2.Qc6#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Se6
      • 2.Qc6#
    • 1...b5
      • 2.Qxa5#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Sxb6#
        • 2.Sc7#
      • 1...Qa6+
        • 2.Qxa6#
      • 1...Sc2
        • 2.Sc7#
        • 2.Qc6#
      • 1...Se2
        • 2.Sc7#
        • 2.Qc6#
      • 1...Sb3
        • 2.Sc7#
        • 2.Qc6#
      • 1...Sf3
        • 2.Sc7#
        • 2.Qc6#
      • 1...Sf5
        • 2.Sc7#
        • 2.Qc6#
      • 1...Sc6
        • 2.Sc7#
        • 2.Qxc6#
      • 1...Se6
        • 2.Qc6#
      • 1...b5
        • 2.Sb6#
        • 2.Sc7#
        • 2.Qxa5#
      • 1...Sb5!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Sc7#
      • 1...Qxa6+
        • 2.Qxa6#
      • 1...Sb5
        • 2.Qe4#
      • 1...Se6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(c);CHECK,OGATE::QAR2(A),XQ(c)
    • Q(c);OGATE::QAR1(A),XQ(c)
    • S(b);N_GUARD::QAB(A)
    • S(b);N_GUARD::QAB(A),XS(b)
    • P(e);N_GUARD::QAR(A),XQ(c)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);CHECK,OGATE::QAR2(A),XQ(c)
        • S(b);N_GUARD::QAB(A)
      • Refutation
        • S(b);
  • Actual
    • S(B);N_PINQ(c)
    • Threat
      • S(B)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XS(B)::QAR2(A),XQ(c)
      • S(b);OGATE::QAB(A)
      • S(b);N_GUARD::QAB(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).