MESON Chess Problem Database

Problem Display
PID: 160714 (5rR1/6Nk/5Q2/7K/8/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

5rR1/6Nk/5Q2/7K/8/8/8/8

#2

4 + 2

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg8
      • 2.Qh6#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Qg7#
        • 2.Qh8#
        • 2.Qg6#
      • 1...Kxg8
        • 2.Qg7#
      • 1...Rxg8
        • 2.Qh6#
      • 1...Rf7
        • 2.Rh8#
        • 2.Qh8#
        • 2.Qg6#
        • 2.Qxf7#
      • 1...Rxf6!
    • 1.Se6?
      • threat
        • 2.Qg7#
        • 2.Qh8#
        • 2.Qg6#
      • 1...Kxg8
        • 2.Qg7#
      • 1...Rxg8
        • 2.Qh6#
      • 1...Rf7
        • 2.Rh8#
        • 2.Qh8#
        • 2.Qg6#
        • 2.Qxf7#
      • 1...Rxf6!
  • Keys
    • 1.Se8!
      • threat
        • 2.Qg7#
        • 2.Qh8#
        • 2.Qg6#
      • 1...Kxg8
        • 2.Qg7#
      • 1...Rxf6
        • 2.Sxf6#
      • 1...Rxg8
        • 2.Qh6#
      • 1...Rf7
        • 2.Rh8#
        • 2.Qh8#
        • 2.Qg6#
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK,XR(D)::QAR1(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(B)
        • R(b);SBLOCK,XR(D)::QAR1(B)
      • Refutation
        • R(b);XQ(B)
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(B)
        • R(b);SBLOCK,XR(D)::QAR1(B)
      • Refutation
        • R(b);XQ(B)
  • Actual
    • S(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(a);S_FLIGHT,XR(D)::QAR1(B)
      • R(b);XQ(B)::S(C),XR(b)
      • R(b);SBLOCK,XR(D)::QAR1(B)
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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).