MESON Chess Problem Database

Problem Display
PID: 47264 (4b3/4Np2/1B2k3/2K3Q1/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

4b3/4Np2/1B2k3/2K3Q1/8/8/8/8

#2

4 + 3

136 Problem Observer 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6?
      • 1...Kd7
        • 2.Qf5#
      • 1...f5
        • 2.Qe7#
      • 1...f6
        • 2.Qd5#
      • 1...Bd7
        • 2.Sd4#
        • 2.Sd8#
        • 2.Qe5#
      • 1...Bxc6!
    • 1.Sg6?
      • threat
        • 2.Sf8#
      • 1...Kd7
        • 2.Qf5#
      • 1...f5
        • 2.Qe7#
      • 1...f6
        • 2.Qd5#
      • 1...fxg6!
    • 1.Sg8?
      • threat
        • 2.Qd5#
      • 1...Kd7
        • 2.Qf5#
      • 1...f5
        • 2.Qe7#
      • 1...Bc6!
    • 1.Qf6+?
      • 1...Kd7
        • 2.Qd6#
      • 1...Kxf6!
    • 1.Qd5+?
      • 1...Kxe7
        • 2.Qd6#
      • 1...Kf6!
    • 1.Qe5+?
      • 1...Kd7
        • 2.Qd6#
      • 1...Kxe5!
  • Keys
    • 1.Bd8!
      • threat
        • 2.Qf5#
      • 1...Kd7
        • 2.Qd5#
      • 1...f5
        • 2.Qxf5#
      • 1...f6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::QAB(B)
        • P(b);SBLOCK::QAR1(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • B(c);XS(D)
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • K(a);S_FLIGHT::QAB(B)
        • P(b);SBLOCK::QAR1(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • P(b);XS(D)
    • Try
      • S(D);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAB(B)
        • P(b);SBLOCK::QAR1(B)
      • Refutation
        • B(c);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • B(C);
    • Threat
      • QAB1(B)
    • Vars
      • K(a);S_FLIGHT::QAR2(B)
      • P(b);::QAB1(B),XP(b)
      • P(b);SBLOCK::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).