MESON Chess Problem Database

Problem Display
PID: 167779 (kr6/r2Q4/2R1P3/8/2R1K3/8/8/8 w - - 0 1)

Carpenter, George Edward

Dubuque Chess Journal, 1875

kr6/r2Q4/2R1P3/8/2R1K3/8/8/8

#2

5 + 3

14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Rxa4#
    • 1...Ra6
      • 2.Rxa6#
    • 1...Rc8
      • 2.Rxc8#
      • 2.Qxc8#
  • Keys
    • 1.Qd5!
      • 1...Kb7
        • 2.Rd6#
      • 1...Ra1
        • 2.Ra6#
      • 1...Ra2
        • 2.Ra6#
      • 1...Ra3
        • 2.Ra6#
      • 1...Ra4
        • 2.Ra6#
      • 1...Ra5
        • 2.Ra6#
      • 1...Ra6
        • 2.Rxa6#
      • 1...Rc7
        • 2.Ra6#
      • 1...Rd7
        • 2.Ra6#
      • 1...Re7
        • 2.Ra6#
      • 1...Rf7
        • 2.Ra6#
      • 1...Rg7
        • 2.Ra6#
      • 1...Rh7
        • 2.Ra6#
      • 1...Rb1
        • 2.Rc8#
      • 1...Rb2
        • 2.Rc8#
      • 1...Rb3
        • 2.Rc8#
      • 1...Rb4
        • 2.Rc8#
      • 1...Rb5
        • 2.Rc8#
      • 1...Rb6
        • 2.Rc8#
      • 1...Rc8
        • 2.Rxc8#
      • 1...Rd8
        • 2.Rc8#
      • 1...Re8
        • 2.Rc8#
      • 1...Rf8
        • 2.Rc8#
      • 1...Rg8
        • 2.Rc8#
      • 1...Rh8
        • 2.Rc8#
      • 1...Rab7
        • 2.Ra6#
      • 1...Rbb7
        • 2.Rc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 25
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATEB,P_PINR(A)::R(A),XR(a)
    • R(a);OGATEB::R(C),XR(a)
  • Actual
    • Q(E);
    • Vars
      • K(b);S_FLIGHT::QAB(E)+R(C)
      • R(a);::QAB(E)+R(C),DCHECK
      • R(a);P_PINR(A)::QAB(E)+R(C),DCHECK
      • R(a);::QAB(E)+R(C),DCHECK,XR(a)
      • R(a);P_PINP(D)::QAB(E)+R(C),DCHECK
      • R(a);SBLOCK::QAB(E)+R(C),DCHECK
      • R(c);::QAB(E)+R(C),DCHECK
      • R(c);P_PINR(A)::QAB(E)+R(C),DCHECK
      • R(c);::QAB(E)+R(C),DCHECK,XR(c)
      • R(c);P_PINP(D)::QAB(E)+R(C),DCHECK
      • R(a);S_CUTR(c)::R(C)
      • R(c);S_CUTR(a)::R(C)
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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).