MESON Chess Problem Database

Problem Display
PID: 208848 (1R4nb/4p1k1/4P1P1/6n1/5N1N/2p5/2K1R3/7Q w - - 0 1)

Meyer, Heinrich Friedrich Ludwig

English Mechanic and World of Science, 1875

(First published on Fri Oct 1 1875)

1R4nb/4p1k1/4P1P1/6n1/5N1N/2p5/2K1R3/7Q

#2

8 + 6

147 Detroit Free Press 1876
15239 Valois Notebooks 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Sh5#
    • 1...Kh6
      • 2.Sf5#
    • 1...Sf6
      • 2.Sf5#
    • 1...Sh6
      • 2.Sh5#
  • Tries
    • 1.Rxg8+?
      • 1...Kf6
        • 2.Sd5#
        • 2.Sh5#
      • 1...Kh6
        • 2.Sf5#
      • 1...Kxg8!
  • Keys
    • 1.Qc1!
      • 1...Kf6
        • 2.Sh5#
      • 1...Kh6
        • 2.Sf5#
      • 1...Sxe6
        • 2.Sh5#
      • 1...Sf3
        • 2.Sh5#
      • 1...Sh3
        • 2.Sh5#
      • 1...Se4
        • 2.Sh5#
      • 1...Sf7
        • 2.Sh5#
      • 1...Sh7
        • 2.Sh5#
      • 1...Sf6
        • 2.Sf5#
      • 1...Sh6
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::S(D)
    • K(d);S_FLIGHT::QAR(A)+S(E),DCHECK
    • S(e);SBLOCK::S(E)
    • S(e);SBLOCK::S(D)
  • Tries
    • Try
      • R(H);CHECK,XS(e)
      • Vars
        • K(d);S_FLIGHT::QAR(A)+S(E),DCHECK
      • Refutation
        • K(d);P-FLIGHT,XR(H)
  • Actual
    • Q(A);
    • Vars
      • K(d);S_FLIGHT::S(D)
      • K(d);S_FLIGHT::S(E)
      • S(b);XP(F)::S(D)
      • S(b);::S(D)
      • S(e);SBLOCK::S(E)
      • S(e);SBLOCK::S(D)
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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).