MESON Chess Problem Database

Problem Display
PID: 23571 (8/8/4K3/4N3/2p1k3/8/R2Q4/4r3 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

8/8/4K3/4N3/2p1k3/8/R2Q4/4r3

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Ra4#
  • Tries
    • 1.Ra3?
      • 1...Re3
        • 2.Qxe3#
      • 1...Ra1
        • 2.Qe3#
      • 1...Rb1
        • 2.Qe3#
      • 1...Rc1
        • 2.Qe3#
      • 1...Rd1
        • 2.Qe3#
      • 1...Rf1
        • 2.Qe3#
      • 1...Rg1
        • 2.Qe3#
      • 1...Rh1
        • 2.Qe3#
      • 1...c3
        • 2.Ra4#
      • 1...Re2!
  • Keys
    • 1.Qf2!
      • 1...Re3
        • 2.Qh4#
      • 1...Re2
        • 2.Rxe2#
      • 1...Ra1
        • 2.Re2#
      • 1...Rb1
        • 2.Re2#
      • 1...Rc1
        • 2.Re2#
      • 1...Rd1
        • 2.Re2#
      • 1...Rf1
        • 2.Re2#
      • 1...Rg1
        • 2.Re2#
      • 1...Rh1
        • 2.Re2#
      • 1...c3
        • 2.Ra4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::R(A)
  • Tries
    • Try
      • R(A);
      • Vars
        • R(a);N_GUARD::QAR1(B),XR(a)
        • R(a);N_GUARD::QAR1(B)
        • P(b);OGATEB::R(A)
      • Refutation
        • R(a);
  • Actual
    • Q(B);
    • Vars
      • R(a);SBLOCK::QAR(B)
      • R(a);N_GUARD::R(A),XR(a)
      • R(a);N_GUARD::R(A)
      • P(b);OGATEB::R(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).