MESON Chess Problem Database

Problem Display
PID: 267230 (8/7Q/PN6/1k6/1P6/1R6/1K6/8 w - - 0 1)

Kakabadze, Giorgi

Die Schwalbe, 1975

8/7Q/PN6/1k6/1P6/1R6/1K6/8

#2

6 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb6
      • 2.Qb7#
  • Tries
    • 1.Sc8?
      • 1...Ka4
        • 2.Qd7#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kc6
        • 2.Qb7#
      • 1...Kxa6!
    • 1.Qe4?
      • 1...Kxb6
        • 2.Qb7#
      • 1...Kxa6!
    • 1.Qh1?
      • 1...Kxb6
        • 2.Qb7#
      • 1...Kxa6!
    • 1.Qd7+?
      • 1...Kxb6
        • 2.Qb7#
      • 1...Kxa6!
    • 1.Qe7?
      • 1...Kxb6
        • 2.Qb7#
      • 1...Kc6
        • 2.Qc5#
      • 1...Kxa6!
  • Keys
    • 1.Sc4!
      • 1...Ka4
        • 2.Qd7#
      • 1...Kxc4
        • 2.Qd3#
      • 1...Kxa6
        • 2.b5#
      • 1...Kc6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(a);OGATEB,P-FLIGHT,XS(E)::QAR1(F)
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(F)
        • K(a);N_GUARD,S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • Q(F);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(E)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • Q(F);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(E)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(E)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • Q(F);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(E)::QAR1(F)
        • K(a);N_GUARD,S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
  • Actual
    • S(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB(F)
      • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(F)
      • K(a);OGATE,S_FLIGHT,XP(D)::P(C)
      • K(a);N_GUARD,S_FLIGHT::QAB1(F)
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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).