MESON Chess Problem Database

Problem Display
PID: 252865 (3K3Q/8/8/5Bk1/6P1/8/5P2/8 w - - 0 1)

Karin, Aleksey

Zadachi i Etyudi, 2005

3K3Q/8/8/5Bk1/6P1/8/5P2/8

#2

5 + 1

3713 Snap 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qc3?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kh6
        • 2.Qf6#
      • 1...Kh4!
    • 1.Qd4?
      • 1...Kh6
        • 2.Qf6#
      • 1...Kh4!
    • 1.Qe5?
      • 1...Kh6
        • 2.Qf6#
      • 1...Kh4!
    • 1.Qg7+?
      • 1...Kh4
        • 2.Qh6#
      • 1...Kf4!
    • 1.Qh3?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kf6!
    • 1.Qh7?
      • 1...Kf6
        • 2.Qe7#
      • 1...Kf4!
    • 1.Qf8?
      • 1...Kh4
        • 2.Qh6#
      • 1...Kf4!
  • Keys
    • 1.Qe8!
      • 1...Kf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Qh5#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qg6#

Anticipated by 24210(1927), 16378(1940), 73436(1961)

This anticipates 255147(2006), 269598(2023)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
        • K(a);N_GUARD,S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • K(a);N_GUARD,S_FLIGHT::QAR1(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).