MESON Chess Problem Database

Problem Display
PID: 172527 (7b/4p3/5k2/3Q3K/B3P3/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2002

7b/4p3/5k2/3Q3K/B3P3/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bg7
      • 2.Qf5#
  • Tries
    • 1.Bb3?
      • threat
        • 2.Qg5#
      • 1...Kg7
        • 2.Qf7#
      • 1...e5
        • 2.Qf7#
      • 1...e6!
  • Keys
    • 1.Be8!
      • 1...Kg7
        • 2.Qf7#
      • 1...e5
        • 2.Qf7#
      • 1...e6
        • 2.Qg5#
      • 1...Bg7
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::QAR1(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • P(b);SBLOCK::QAR1(C)
      • Refutation
        • P(b);
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • P(b);SBLOCK::QAR1(C)
      • P(b);SBLOCK::QAB1(C)
      • B(c);SBLOCK::QAR1(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).