MESON Chess Problem Database

Problem Display
PID: 23821 (1N2k3/2b4K/5Q2/3Bn3/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Australian Chess Problem Magazine, 1997

1N2k3/2b4K/5Q2/3Bn3/8/8/8/8

#2

4 + 3

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Bc6#
    • 1...Sf3
      • 2.Bc6#
    • 1...Sc4
      • 2.Bc6#
    • 1...Sg4
      • 2.Bc6#
    • 1...Sc6
      • 2.Bxc6#
    • 1...Sg6
      • 2.Bc6#
  • Tries
    • 1.Bc6+?
      • 1...Sd7
        • 2.Bxd7#
      • 1...Sxc6!
    • 1.Qf7+?
      • 1...Kd8
        • 2.Qf8#
      • 1...Sxf7!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qe7#
      • 1...Kd7
        • 2.Qe6#
      • 1...Sxc6
        • 2.Bxc6#
      • 1...Bd6
        • 2.Qd8#
      • 1...Bd8
        • 2.Qxd8#
      • 1...Sg6
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::B(A)
    • S(a);N_GUARD::B(A),XS(a)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::B(A),XS(a)
      • Refutation
        • S(a);XB(A)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • S(D);
    • Threat
      • QAR1(B)
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • S(a);OGATE,XS(D)::B(A),XS(a)
      • B(b);N_GUARD::QAR1(B)
      • B(b);N_GUARD::QAR1(B),XB(b)
      • S(a);N_GUARD::QAB1(B)
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).