MESON Chess Problem Database

Problem Display
PID: 187868 (6Q1/8/5p2/1K6/4k3/3N4/2BP4/8 w - - 0 1)

Andersson, Erik

Tidskrift for Schack, 1910

6Q1/8/5p2/1K6/4k3/3N4/2BP4/8

#2

5 + 2

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qc4#
  • Tries
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Kf3!
  • Keys
    • 1.Bd1!
      • 1...Kxd3
        • 2.Qd5#
      • 1...Kd4
        • 2.Qc4#
      • 1...Kf5
        • 2.Qg4#
      • 1...f5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT,XS(C)::QAR2(E)
      • K(a);P-FLIGHT::QAR1(E)
      • K(a);S_FLIGHT::QAB1(E)
      • P(b);SBLOCK::QAR2(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).