MESON Chess Problem Database

Problem Display
PID: 287453 (8/2Nk4/2N5/8/1QK5/3B4/8/8 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Problem Paradise, 2020

8/2Nk4/2N5/8/1QK5/3B4/8/8

#2

5 + 1

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Tries
    • 1.Sa7?
      • 1...Kd8
        • 2.Qd6#
      • 1...Kxc7!
    • 1.Se7?
      • 1...Kd8
        • 2.Qd6#
      • 1...Kxc7!
    • 1.Sd5?
      • 1...Ke6
        • 2.Qe7#
      • 1...Kc8
        • 2.Bf5#
      • 1...Ke8
        • 2.Qe7#
      • 1...Kxc6!
    • 1.Sa6?
      • 1...Ke6
        • 2.Qe7#
      • 1...Kc8
        • 2.Bf5#
      • 1...Ke8
        • 2.Qe7#
      • 1...Kxc6!
    • 1.Sa8?
      • 1...Ke6
        • 2.Qe7#
      • 1...Kc8
        • 2.Bf5#
      • 1...Ke8
        • 2.Qe7#
      • 1...Kxc6!
    • 1.Qb6?
      • 1...Kc8
        • 2.Bf5#
      • 1...Kd6!
  • Keys
    • 1.Se8!
      • 1...Kxc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Qe7#
      • 1...Kc8
        • 2.Bf5#
      • 1...Kxe8
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
    • Try
      • S(D);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
    • Try
      • S(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(B)
        • K(a);N_GUARD,S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • S(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(B)
        • K(a);N_GUARD,S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • S(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(B)
        • K(a);N_GUARD,S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(B)
      • K(a);N_GUARD,S_FLIGHT::QAR1(B)
      • K(a);N_GUARD,S_FLIGHT::B(A)
      • K(a);N_GUARD,S_FLIGHT,XS(E)::QAR1(B)
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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).