MESON Chess Problem Database

Problem Display
PID: 267545 (8/2N3kB/4K3/6P1/8/7Q/8/8 w - - 0 1)

Popovski, Aleksandr

Politika, 1963

8/2N3kB/4K3/6P1/8/7Q/8/8

#2

5 + 1

261 Mat 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Kf8
      • 2.Qh6#
  • Tries
    • 1.Bb1?
      • 1...Kf8
        • 2.Qh8#
      • 1...Kg8!
    • 1.Bc2?
      • 1...Kf8
        • 2.Qh8#
      • 1...Kg8!
    • 1.Bd3?
      • 1...Kf8
        • 2.Qh8#
      • 1...Kg8!
    • 1.Be4?
      • 1...Kf8
        • 2.Qh8#
      • 1...Kg8!
    • 1.Bf5?
      • 1...Kf8
        • 2.Qh8#
      • 1...Kg8!
    • 1.Bg6?
      • 1...Kxg6
        • 2.Qh6#
      • 1...Kf8
        • 2.Qh8#
      • 1...Kg8!
    • 1.Qh1?
      • 1...Kf8
        • 2.Qh6#
      • 1...Kh8!
    • 1.Qh2?
      • 1...Kf8
        • 2.Qh6#
      • 1...Kh8!
    • 1.Qc3+?
      • 1...Kf8
        • 2.Qf6#
        • 2.Qh8#
      • 1...Kxh7!
    • 1.Qh4?
      • 1...Kf8
        • 2.Qh6#
      • 1...Kh8!
    • 1.Qh5?
      • 1...Kf8
        • 2.Qf7#
        • 2.Qh6#
      • 1...Kh8!
  • Keys
    • 1.g6!
      • 1...Kf8
        • 2.Qh6#
      • 1...Kh8
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::QAB(A)
  • Tries
    • Try
      • B(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XB(E)::QAR1(A)
        • K(a);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XB(E)
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(B);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB(A)
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).