MESON Chess Problem Database

Problem Display
PID: 53567 (8/8/8/6k1/Q6N/B6P/7K/8 w - - 0 1)

Nikitin, Vladimir V

Uralski Problemist, 2004

8/8/8/6k1/Q6N/B6P/7K/8

#2

5 + 1

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bc1+?
      • 1...Kh5
        • 2.Qg4#
      • 1...Kf6!
    • 1.Bf8?
      • 1...Kh5
        • 2.Qg4#
      • 1...Kf6!
    • 1.Qe4?
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kh5!
    • 1.Qg4+?
      • 1...Kh6
        • 2.Qg6#
      • 1...Kf6!
  • Keys
    • 1.Qe8!
      • 1...Kf4
        • 2.Bc1#
      • 1...Kxh4
        • 2.Be7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qg6#

Anticipated by 10692(1967), 66760(1967)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::B(B)
      • K(a);S_FLIGHT,XS(E)::B(B)
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::QAR1(D)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).