MESON Chess Problem Database

Problem Display
PID: 47658 (8/3K1kp1/5N2/5Q2/1B6/3R4/8/8 w - - 0 1)

Lincoln, Robert A

British Chess Magazine, 2000

8/3K1kp1/5N2/5Q2/1B6/3R4/8/8

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002

SOLUTION

  • SOUND
  • Sets
    • 1...gxf6
      • 2.Qh7#
  • Tries
    • 1.Be7?
      • 1...gxf6
        • 2.Qh7#
      • 1...g5
        • 2.Qh7#
      • 1...g6!
    • 1.Rf3?
      • 1...gxf6
        • 2.Qh7#
      • 1...g5
        • 2.Qh7#
      • 1...g6!
    • 1.Rg3?
      • threat
        • 2.Qe6#
        • 2.Qg6#
      • 1...g6
        • 2.Qxg6#
      • 1...g5!
    • 1.Qh5+?
      • 1...Kxf6
        • 2.Bc3#
        • 2.Be7#
        • 2.Rf3#
        • 2.Rd6#
      • 1...g6!
  • Keys
    • 1.Rh3!
      • 1...gxf6
        • 2.Qh7#
      • 1...g5
        • 2.Rh7#
      • 1...g6
        • 2.Rh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB,P_SPINP(b),SBLOCK,XS(D)::QAR2(C)
  • Tries
    • Try
      • B(B);
      • Vars
        • P(b);OGATEB,P_SPINP(b),XS(D)::QAR2(C)
        • P(b);OGATEB::QAR2(C)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Vars
        • P(b);OGATEB,P_SPINP(b),XS(D)::QAR2(C)
        • P(b);OGATEB::QAR2(C)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • R(A);
    • Vars
      • P(b);OGATEB,P_SPINP(b),SBLOCK,XS(D)::QAR2(C)
      • 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).