MESON Chess Problem Database

Problem Display
PID: 203250 (8/8/7Q/8/N2k4/N7/7B/4K3 w - - 0 1)

Speiser, Jacob Kopel

Teplitz-Schonauer Anzeiger, 1924

8/8/7Q/8/N2k4/N7/7B/4K3

#2

5 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3?
      • 1...Kd3
        • 2.Qd2#
      • 1...Kc5
        • 2.Qd6#
      • 1...Kxc3!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kd3!
  • Keys
    • 1.Sc5!
      • 1...Kc3
        • 2.Qd2#
      • 1...Kxc5
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT,XS(D)::QAB1(E)
      • K(a);P-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).