MESON Chess Problem Database

Problem Display
PID: 22754 (8/2p5/Q3p1N1/3k4/N7/3K4/8/8 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

8/2p5/Q3p1N1/3k4/N7/3K4/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Se7#
    • 1...c5
      • 2.Sc3#
  • Tries
    • 1.Qb5+?
      • 1...c5
        • 2.Qd7#
        • 2.Qxc5#
      • 1...Kd6!
    • 1.Qb7+?
      • 1...c6
        • 2.Qd7#
      • 1...Kd6!
    • 1.Qb6?
      • threat
        • 2.Sc3#
        • 2.Qc5#
      • 1...c6
        • 2.Qd4#
        • 2.Qc5#
        • 2.Qd8#
      • 1...e5
        • 2.Sc3#
        • 2.Se7#
      • 1...c5
        • 2.Sc3#
        • 2.Qxc5#
      • 1...cxb6!
    • 1.Qa8+?
      • 1...c6
        • 2.Qd8#
      • 1...Kd6!
  • Keys
    • 1.Ke3!
      • 1...c6
        • 2.Qd3#
      • 1...e5
        • 2.Se7#
      • 1...c5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::S(D)
    • P(c);SBLOCK::S(B)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • P(c);OGATE,P_SPINP(c)::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • P(c);P_SPINP(c),SBLOCK::QAR(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • P(c);SBLOCK::QAR2(C)
      • P(b);SBLOCK::S(D)
      • P(c);SBLOCK::S(B)
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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).