MESON Chess Problem Database

Problem Display
PID: 15734 (8/4N3/5B1p/7k/6r1/8/4QK2/8 w - - 0 1)

Lincoln, Robert A

Newark Star-Ledger, 1987

8/4N3/5B1p/7k/6r1/8/4QK2/8

#2

4 + 3

2838 Fun with Chess Miniatures 1996
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Keys
    • 1.Kf3!
      • 1...Rg3+
        • 2.Kxg3#
      • 1...Rf4+
        • 2.Kxf4#
      • 1...Rg5
        • 2.Qh2#
      • 1...Rg1
        • 2.Qh2#
      • 1...Rg2
        • 2.Kxg2#
      • 1...Ra4
        • 2.Qb5#
        • 2.Qe5#
      • 1...Rb4
        • 2.Qe5#
      • 1...Rc4
        • 2.Qe5#
      • 1...Rd4
        • 2.Qe5#
      • 1...Re4
        • 2.Kxe4#
      • 1...Rh4
        • 2.Qb5#
        • 2.Qe5#
      • 1...Rg6
        • 2.Qh2#
      • 1...Rg7
        • 2.Qh2#
      • 1...Rg8
        • 2.Qh2#

Anticipated by 108701(1966), 176195(1971)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Actual
    • K(B);N_PINR(a),P-FLIGHT
    • Vars
      • R(a);CHECK::QAB(A)+K(B),XR(a)
      • R(a);N_GUARD::QAR(A)
      • R(a);::QAB(A)+K(B),XR(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).