MESON Chess Problem Database

Problem Display
PID: 226526 (8/N5Q1/3pk2n/5R2/8/5K2/8/8 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Sachova skladba, 2005

8/N5Q1/3pk2n/5R2/8/5K2/8/8

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.Qf7#
    • 1...Sf7
      • 2.Qxf7#
    • 1...Sg8
      • 2.Qf7#
  • Tries
    • 1.Kf4?
      • 1...Sf7
        • 2.Qxf7#
      • 1...d5
        • 2.Rf6#
      • 1...Sg4
        • 2.Qf7#
      • 1...Sg8
        • 2.Qf7#
      • 1...Sxf5!
    • 1.Sc6?
      • threat
        • 2.Sd4#
      • 1...Kxf5
        • 2.Sd4#
      • 1...Sf7
        • 2.Qxf7#
      • 1...d5
        • 2.Rf6#
      • 1...Sxf5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sd4#
      • 1...Kxf5
        • 2.Sd4#
      • 1...Sxf5
        • 2.Sc7#
      • 1...Sf7
        • 2.Qxf7#
      • 1...d5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(c);N_GUARD::QAB1(D)
    • S(c);N_GUARD::QAB1(D),XS(c)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(c);N_GUARD::QAB1(D),XS(c)
        • P(a);SBLOCK::R1(B)
        • S(c);N_GUARD::QAB1(D)
      • Refutation
        • S(c);XR(B)
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • K(b);S_FLIGHT,XR(B)::S(C)
        • S(c);N_GUARD::QAB1(D),XS(c)
        • P(a);SBLOCK::R1(B)
      • Refutation
        • S(c);XR(B)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(b);S_FLIGHT,XR(B)::S(C)
      • S(c);SBLOCK,XR(B)::S(C)
      • S(c);N_GUARD::QAB1(D),XS(c)
      • P(a);N_GUARD::R1(B)
HTML5 logo

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).