MESON Chess Problem Database

Problem Display
PID: 12121 (4B3/B7/4p3/4Q3/2K5/5k2/8/2R5 w - - 0 1)

Lukyanov, Valentin Volodimirovich

Shedey, Sergey Oleksandrovich

Chervoni Girnik, 1975

4B3/B7/4p3/4Q3/2K5/5k2/8/2R5

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Bb8?
      • 1...Kg2
        • 2.Qg3#
      • 1...Kg4
        • 2.Qh5#
      • 1...Kf2!
    • 1.Qg3+?
      • 1...Ke2
        • 2.Qf2#
        • 2.Qg2#
        • 2.Qd3#
        • 2.Qe3#
      • 1...Ke4
        • 2.Bg6#
      • 1...Kxg3!
    • 1.Qg5?
      • 1...Ke2
        • 2.Bh5#
        • 2.Qe3#
        • 2.Qg2#
      • 1...Ke4
        • 2.Bc6#
      • 1...e5!
  • Keys
    • 1.Rh1!
      • 1...Kg2
        • 2.Bc6#
      • 1...Kg4
        • 2.Bh5#

This anticipates 12315(1977)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • P(b);
  • Actual
    • R(A);
    • Vars
      • K(a);S_FLIGHT::B(E)
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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).