MESON Chess Problem Database

Problem Display
PID: 208793 (8/1p1k1N2/1p6/1p1N4/3QKB2/8/8/8 w - - 0 1)

Peter, Arthur

Detroit Free Press, 1876

8/1p1k1N2/1p6/1p1N4/3QKB2/8/8/8

#2

5 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Sb4#
      • 2.Se7#
    • 1...Kc8
      • 2.Sxb6#
      • 2.Se7#
  • Tries
    • 1.Sc7+?
      • 1...Kc6
        • 2.Sd8#
        • 2.Qd5#
        • 2.Qd6#
      • 1...Kc8
        • 2.Qd8#
      • 1...Ke7!
    • 1.Qe5?
      • 1...Kc6
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kc8
        • 2.Sxb6#
        • 2.Qc7#
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qe8#
      • 1...b4!
    • 1.Qf6?
      • 1...Kc8
        • 2.Sxb6#
        • 2.Qd8#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Ke8
        • 2.Qe7#
      • 1...b4!
    • 1.Qh8?
      • 1...Kc6
        • 2.Qc8#
      • 1...Ke6
        • 2.Qe8#
      • 1...b4!
  • Keys
    • 1.Qb4!
      • 1...Kc6
        • 2.Se5#
        • 2.Qd6#
      • 1...Ke6
        • 2.Qe7#
      • 1...Kc8
        • 2.Sxb6#
      • 1...Ke8
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(d);S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(d);S_FLIGHT::QAR2(A)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Vars
      • K(d);S_FLIGHT::QAR1(A)
      • K(d);S_FLIGHT::S(D),XP(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).