MESON Chess Problem Database

Problem Display
PID: 264490 (8/8/3K1Q2/8/R7/8/2N1kB2/5R2 w - - 0 1)

Chepizhni, Viktor Ivanovich

The Problemist, 1992

8/8/3K1Q2/8/R7/8/2N1kB2/5R2

#2

6 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Sb4?
      • 1...Kd2
        • 2.Ra2#
        • 2.Qb2#
      • 1...Kxf1!
    • 1.Ra2?
      • 1...Kxf1
        • 2.Se3#
      • 1...Kd2
        • 2.Sb4#
      • 1...Kd3!
    • 1.Qd4?
      • threat
        • 2.Qd1#
      • 1...Kf3
        • 2.Qe4#
        • 2.Qg4#
      • 1...Kxf1!
  • Keys
    • 1.Qb2!
      • 1...Kxf1
        • 2.Se3#
      • 1...Kd2
        • 2.Sb4#
      • 1...Kd3
        • 2.Se1#
      • 1...Kf3
        • 2.Se1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • R(D);
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XR(A)::S(B)
        • K(a);N_GUARD,P-FLIGHT::R(D)+S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
  • Actual
    • Q(F);
    • Vars
      • K(a);N_GUARD,S_FLIGHT,XR(A)::S(B)
      • K(a);N_GUARD,P-FLIGHT::QAR(F)+S(B)
      • K(a);N_GUARD,S_FLIGHT::S(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).