MESON Chess Problem Database

Problem Display
PID: 48074 (7n/8/5Q2/7k/8/1Bn3P1/7K/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

7n/8/5Q2/7k/8/1Bn3P1/7K/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Bd1#
    • 1...Sd1
      • 2.Bxd1#
    • 1...Sa2
      • 2.Bd1#
    • 1...Sa4
      • 2.Bd1#
    • 1...Se4
      • 2.Bd1#
    • 1...Sb5
      • 2.Bd1#
    • 1...Sd5
      • 2.Bd1#
  • Tries
    • 1.Bd1+?
      • 1...Se2
        • 2.Bxe2#
      • 1...Sxd1!
    • 1.Bf7+?
      • 1...Kg4
        • 2.Qf4#
      • 1...Sg6
        • 2.Qh4#
        • 2.Qxg6#
      • 1...Sxf7!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Qh4#
      • 1...Kg4
        • 2.Qf5#
      • 1...Sg6
        • 2.Qxg6#
      • 1...Se4
        • 2.Bd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(a);N_GUARD::B(B)
    • S(a);N_GUARD::B(B),XS(a)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::B(B),XS(a)
      • Refutation
        • S(a);XB(B)
    • Try
      • B(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(D)
      • Refutation
        • S(c);XB(B)
  • Actual
    • B(B);
    • Threat
      • QAR1(D)
    • Vars
      • K(b);S_FLIGHT::QAB1(D)
      • S(c);N_GUARD::QAB1(D),XS(c)
      • S(a);N_GUARD::B(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).