MESON Chess Problem Database

Problem Display
PID: 51099 (5K2/8/7p/7k/7P/1Q1b2P1/8/5N1R w - - 0 1)

Blanchard, H

Burnley Express, 1881

5K2/8/7p/7k/7P/1Q1b2P1/8/5N1R

#2

6 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kg6
      • 2.Qf7#
    • 1...Bg6
      • 2.Qd1#
      • 2.Qf3#
  • Tries
    • 1.Qd5+?
      • 1...Kg6
        • 2.Qf7#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Kg4!
    • 1.Qf7+?
      • 1...Bg6
        • 2.Qf3#
      • 1...Kg4!
    • 1.g4+?
      • 1...Kg6
        • 2.Qf7#
      • 1...Kxg4!
  • Keys
    • 1.Qe6!
      • threat
        • 2.g4#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Be2
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • B(a);N_GUARD,P_SPINB(a)::QAR2(C),XB(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • B(a);P_SPINB(a),SBLOCK::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT,XP(D)
  • Actual
    • Q(C);
    • Threat
      • P(D)
    • Vars
      • B(a);N_GUARD::QAR2(C),XB(a)
      • B(a);N_GUARD::QAR2(C)
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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).