MESON Chess Problem Database

Problem Display
PID: 164901 (2Q5/K7/3p4/3p4/3knP2/3P1p2/8/b1NN4 w - - 0 1)

Magini, Fabio

Best Problems, 2016

2Q5/K7/3p4/3p4/3knP2/3P1p2/8/b1NN4

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qh8#
  • Tries
    • 1.Qb7?
      • threat
        • 2.Qb4#
      • 1...Kc5
        • 2.Sb3#
        • 2.Qb6#
      • 1...Sd2
        • 2.Qb6#
      • 1...Bc3!
    • 1.Qc2?
      • threat
        • 2.Sb3#
      • 1...Sc5
        • 2.Qf2#
      • 1...Sd2!
    • 1.Qb8?
      • threat
        • 2.Qb4#
      • 1...Kc5
        • 2.Qb6#
      • 1...Sd2
        • 2.Qb6#
      • 1...Bc3!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Sb3#
      • 1...Kc5
        • 2.Qb6#
      • 1...Sd2
        • 2.Qb6#
      • 1...Sc5
        • 2.Qxa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,SBLOCK::QAB(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • S(d);N_GUARD::QAB(F)
      • Refutation
        • B(a);
    • Try
      • Q(F);
      • Threat
        • S(A)
      • Vars
        • S(d);N_GUARD,SBLOCK::QAB(F)
      • Refutation
        • S(d);
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • K(c);S_FLIGHT::QAB1(F)
        • S(d);N_GUARD::QAB(F)
      • Refutation
        • B(a);
  • Actual
    • Q(F);
    • Threat
      • S(A)
    • Vars
      • K(c);S_FLIGHT::QAB1(F)
      • S(d);N_GUARD::QAB(F)
      • S(d);N_GUARD,SBLOCK::QAB(F),XB(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).