MESON Chess Problem Database

Problem Display
PID: 234778 (kNK5/1R6/qPP5/8/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2016

kNK5/1R6/qPP5/8/8/8/8/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Ra7#
    • 1...Qe2
      • 2.Ra7#
    • 1...Qd3
      • 2.Ra7#
    • 1...Qc4
      • 2.Ra7#
    • 1...Qb5
      • 2.Ra7#
    • 1...Qxb7+
      • 2.cxb7#
    • 1...Qa7
      • 2.Rxa7#
  • Keys
    • 1.Sd7!
      • 1...Qxb7+
        • 2.cxb7#
      • 1...Qxb6
        • 2.Sxb6#
      • 1...Qf1
        • 2.Ra7#
        • 2.Rb8#
      • 1...Qe2
        • 2.Ra7#
        • 2.Rb8#
      • 1...Qd3
        • 2.Ra7#
        • 2.Rb8#
      • 1...Qc4
        • 2.Ra7#
        • 2.Rb8#
      • 1...Qb5
        • 2.Ra7#
        • 2.Rb8#
      • 1...Qa1
        • 2.Rb8#
      • 1...Qa2
        • 2.Rb8#
      • 1...Qa3
        • 2.Rb8#
      • 1...Qa4
        • 2.Rb8#
      • 1...Qa5
        • 2.Rb8#
      • 1...Qa7
        • 2.Rxa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_PINR(C)::R1(C)
    • Q(a);N_PINR(C),P_PINP(B)::R1(C)
    • Q(a);CHECK,OGATE,XR(C)::P(B),XQ(a)
    • Q(a);N_PINR(C)::R1(C),XQ(a)
  • Actual
    • S(D);
    • Vars
      • Q(a);CHECK,OGATE,XR(C)::P(B),XQ(a)
      • Q(a);N_PINR(C),XP(A)::S(D),XQ(a)
      • Q(a);N_PINR(C)::R1(C)
      • Q(a);N_PINR(C)::R1(C),XQ(a)
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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).