MESON Chess Problem Database

Problem Display
PID: 223311 (8/8/4p3/4p2K/1P1NpN1Q/1P2k3/4P3/8 w - - 0 1)

Orchard, Isaac Edward

Charleston Sunday News, 1886

8/8/4p3/4p2K/1P1NpN1Q/1P2k3/4P3/8

#2

7 + 4

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sg2+?
      • 1...Kd2
        • 2.Qe1#
      • 1...Kxd4!
  • Keys
    • 1.Qe1!
      • 1...Kxd4
        • 2.Qd2#
        • 2.e3#
      • 1...Kxf4
        • 2.Qf2#
        • 2.e3#
      • 1...exd4
        • 2.Sg2#
      • 1...exf4
        • 2.Sc2#

This anticipates 187893(1910)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XS(D)
  • Actual
    • Q(F);
    • Vars
      • P(c);SBLOCK,XS(D)::S(E)
      • P(c);SBLOCK,XS(E)::S(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).