MESON Chess Problem Database

Problem Display
PID: 76746 (6rk/6p1/6Kp/6R1/8/8/8/5Q2 w - - 0 1)

Butwillo, Brother

The Tablet, 1944

(First published on Sat Oct 7 1944)

6rk/6p1/6Kp/6R1/8/8/8/5Q2

#2

3 + 4

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rf8
      • 2.Qxf8#
    • 1...hxg5
      • 2.Qh3#
      • 2.Qh1#
    • 1...h5
      • 2.Rxh5#
  • Tries
    • 1.Qf7?
      • 1...Ra8
        • 2.Qxg7#
      • 1...Rb8
        • 2.Qxg7#
      • 1...Rc8
        • 2.Qxg7#
      • 1...Rd8
        • 2.Qxg7#
      • 1...Re8
        • 2.Qxe8#
        • 2.Qxg7#
      • 1...Rf8
        • 2.Qxg7#
        • 2.Qxf8#
      • 1...h5
        • 2.Rxh5#
      • 1...hxg5!
  • Keys
    • 1.Qa1!
      • 1...hxg5
        • 2.Qh1#
      • 1...Ra8
        • 2.Qxg7#
        • 2.Qxa8#
      • 1...Rb8
        • 2.Qxg7#
      • 1...Rc8
        • 2.Qxg7#
      • 1...Rd8
        • 2.Qxg7#
      • 1...Re8
        • 2.Qxg7#
      • 1...Rf8
        • 2.Qxg7#
      • 1...h5
        • 2.Rxh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATEB::QAR2(A),XR(c)
    • P(a);OGATEB::R(B),XP(a)
  • Tries
    • Try
      • Q(A);
      • Vars
        • R(c);N_GUARD,SBLOCK::QAB1(A),XP(b)
        • R(c);N_GUARD::QAB1(A),XP(b)
        • P(a);OGATEB::R(B),XP(a)
      • Refutation
        • P(a);XR(B)
  • Actual
    • Q(A);P_PINP(b)
    • Vars
      • P(a);OGATEB,XR(B)::QAB(A)
      • R(c);N_GUARD::QAB1(A),XP(b)
      • P(a);OGATEB::R(B),XP(a)
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).