MESON Chess Problem Database

Problem Display
PID: 23202 (r3k3/b1pN4/Q3K3/8/8/8/8/8 w q - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

r3k3/b1pN4/Q3K3/8/8/8/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Rc8
      • 2.Qxc8#
    • 1...Bg1
      • 2.Qxa8#
    • 1...Bf2
      • 2.Qxa8#
    • 1...Be3
      • 2.Qxa8#
    • 1...Bd4
      • 2.Qxa8#
    • 1...Bc5
      • 2.Qxa8#
    • 1...Bb6
      • 2.Qxa8#
    • 1...Bb8
      • 2.Qc8#
  • Tries
    • 1.Qa3?
      • threat
        • 2.Qe7#
        • 2.Qf8#
      • 1...Kd8
        • 2.Qf8#
      • 1...0-0-0
        • 2.Qa6#
      • 1...Bc5
        • 2.Qxa8#
      • 1...c5!
    • 1.Qd6?
      • threat
        • 2.Sf6#
        • 2.Qe7#
        • 2.Qf8#
      • 1...Kd8
        • 2.Qf8#
      • 1...0-0-0
        • 2.Qa6#
      • 1...Bd4
        • 2.Qe7#
        • 2.Qf8#
      • 1...Bc5
        • 2.Sf6#
      • 1...cxd6!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...0-0-0
        • 2.Qa6#
      • 1...Bd4
        • 2.Qxa8#
      • 1...Bc5
        • 2.Qxa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(c);N_GUARD::QAR2(A),XR(c)
    • B(a);OGATE::QAR(A),XR(c)
    • B(a);S_CUTR(c)::QAR2(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);P-FLIGHT::QAR2(A)
        • K(d);0-0-0,OGATEB::QAB(A)
        • B(a);OGATE::QAR(A),XR(c)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • K(d);P-FLIGHT::QAR2(A)
        • K(d);0-0-0,OGATEB::QAB(A)
        • B(a);::S(C)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(d);P-FLIGHT::QAR(A)
      • K(d);0-0-0,OGATEB::QAB(A)
      • B(a);OGATE::QAR(A),XR(c)
HTML5 logo

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).