MESON Chess Problem Database

Problem Display
PID: 262717 (8/5N2/4p3/1K2P3/1N2k3/8/5Q2/8 w - - 0 1)

Russkikh, Vladimir Evdokimovich

SuperProblem, 2014

8/5N2/4p3/1K2P3/1N2k3/8/5Q2/8

#2

5 + 2

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sa2?
      • 1...Kd5
        • 2.Sc3#
      • 1...Kd3!
    • 1.Sc2?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qg2#
        • 2.Qf3#
      • 1...Kd3!
    • 1.Sc6?
      • 1...Kd5
        • 2.Qd4#
        • 2.Qg2#
        • 2.Qf3#
      • 1...Kd3!
    • 1.Qf1?
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke3!
    • 1.Qf3+?
      • 1...Kd4
        • 2.Sc2#
        • 2.Sc6#
        • 2.Qd3#
      • 1...Kxf3!
  • Keys
    • 1.Qg3!
      • 1...Kd4
        • 2.Qd3#
      • 1...Kf5
        • 2.Sd6#

FEATURES

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