MESON Chess Problem Database

Problem Display
PID: 39736 (8/7p/r7/7k/5Q1N/8/B7/7K w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

8/7p/r7/7k/5Q1N/8/B7/7K

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Bf7#
    • 1...Ra4
      • 2.Bf7#
    • 1...Ra5
      • 2.Bf7#
    • 1...Ra8
      • 2.Bf7#
  • Tries
    • 1.Qg4+?
      • 1...Kh6
        • 2.Sf5#
      • 1...Kxg4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qg5#
      • 1...Kg6
        • 2.Qg5#
      • 1...Ra5
        • 2.Bf7#
      • 1...Rg6
        • 2.Qh4#
      • 1...h6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::B(B)
    • R(b);N_GUARD,SBLOCK::B(B)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::S(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
  • Actual
    • S(D);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • R(b);N_GUARD,SBLOCK::B(B)
      • R(b);SBLOCK::QAR1(C)
      • P(c);SBLOCK::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).