MESON Chess Problem Database

Problem Display
PID: 172262 (3b4/8/8/5Q1B/6Pk/6p1/6K1/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kubanski novosti, 1996

3b4/8/8/5Q1B/6Pk/6p1/6K1/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ba5
      • 2.Qf6#
    • 1...Bb6
      • 2.Qf6#
    • 1...Bf6
      • 2.Qxf6#
    • 1...Bc7
      • 2.Qf6#
  • Tries
    • 1.Qf4?
      • 1...Bg5
        • 2.Qxg3#
      • 1...Ba5
        • 2.Qf6#
      • 1...Bb6
        • 2.Qf6#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bc7
        • 2.Qf6#
      • 1...Be7!
  • Keys
    • 1.Qe5!
      • 1...Bg5
        • 2.Qxg3#
      • 1...Ba5
        • 2.Qf6#
        • 2.Qe7#
      • 1...Bb6
        • 2.Qf6#
        • 2.Qe7#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bc7
        • 2.Qf6#
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(c);N_GUARD,SBLOCK::QAB(C)
    • B(c);N_GUARD::QAB(C)
    • B(c);N_GUARD::QAB(C),XB(c)
  • Tries
    • Try
      • Q(C);
      • Vars
        • B(c);SBLOCK::QAB1(C),XP(a)
        • B(c);N_GUARD,SBLOCK::QAB(C)
        • B(c);N_GUARD::QAB(C)
        • B(c);N_GUARD::QAB(C),XB(c)
      • Refutation
        • B(c);
  • Actual
    • Q(C);
    • Vars
      • B(c);SBLOCK::QAB1(C),XP(a)
      • B(c);N_GUARD::QAB(C),XB(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).