MESON Chess Problem Database

Problem Display
PID: 224722 (6rk/6RB/7B/8/8/4p3/4K3/7Q w - - 0 1)

Woodard, Eugene

Dubuque Chess Journal, 1888

6rk/6RB/7B/8/8/4p3/4K3/7Q

#2

5 + 3

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxa8#
  • Tries
    • 1.Qa8?
      • threat
        • 2.Qxg8#
      • 1...Rb8
        • 2.Qxb8#
      • 1...Rc8
        • 2.Qxc8#
      • 1...Rd8
        • 2.Qxd8#
      • 1...Re8
        • 2.Qxe8#
      • 1...Rf8
        • 2.Qxf8#
      • 1...Rxa8!
  • Keys
    • 1.Qa1!
      • 1...Rxg7
        • 2.Qxg7#
      • 1...Rb8
        • 2.Rb7#
      • 1...Ra8
        • 2.Ra7#
        • 2.Qxa8#
      • 1...Rc8
        • 2.Rc7#
      • 1...Rd8
        • 2.Rd7#
      • 1...Re8
        • 2.Re7#
      • 1...Rf8
        • 2.Rf7#

This anticipates 138396(1935)

There are these versions: 4710

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATEB::QAB1(A),XR(b)
  • Tries
    • Try
      • Q(A);P_PINR(b)
      • Threat
        • QAR1(A),XR(b)
      • Vars
        • R(b);OGATEB::QAR(A),XR(b)
        • R(b);OGATEB::QAR2(A),XR(b)
      • Refutation
        • R(b);N_SPINR(b),XQ(A)
  • Actual
    • Q(A);
    • Vars
      • R(b);OGATE,P_SPINR(b),XR(D)::QAB1(A),XR(b)
      • R(b);N_GUARD::QAB(A)+R(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).