MESON Chess Problem Database

Problem Display
PID: 175610 (1Nrk2n1/2R5/6p1/6N1/K6Q/8/8/8 w - - 0 1)

Walcott, George H

Boston Sunday Post, 1900

1Nrk2n1/2R5/6p1/6N1/K6Q/8/8/8

#2

5 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qh7?
      • threat
        • 2.Qd7#
      • 1...Ke8
        • 2.Rxc8#
        • 2.Qxg8#
      • 1...Se7
        • 2.Qxe7#
      • 1...Sf6
        • 2.Qe7#
      • 1...Rxc7!
  • Keys
    • 1.Qb4!
      • 1...Kxc7
        • 2.Se6#
      • 1...Ke8
        • 2.Rxc8#
      • 1...Rxc7
        • 2.Qf8#
      • 1...Rxb8
        • 2.Qxb8#
      • 1...Sf6
        • 2.Qe7#
      • 1...Sh6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • S(d);N_GUARD::QAB1(B),XS(d)
        • S(d);N_GUARD::QAB1(B)
      • Refutation
        • R(b);XR(D)
  • Actual
    • Q(B);
    • Vars
      • K(c);S_FLIGHT,XR(D)::S(C)
      • K(c);P-FLIGHT::R(D),XR(b)
      • R(b);SBLOCK,XR(D)::QAR2(B)
      • R(b);OGATE,XS(E)::QAR2(B),XR(b)
      • S(d);N_GUARD::QAB1(B)
      • S(d);N_GUARD::QAB1(B),XS(d)
HTML5 logo

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).