MESON Chess Problem Database

Problem Display
PID: 7827 (Kn4b1/2p5/3N1R2/3k4/BR1P4/2p2p1Q/4r3/3nr3 w - - 0 1)

Lincoln, Robert A

Die Schwalbe, 1994

Kn4b1/2p5/3N1R2/3k4/BR1P4/2p2p1Q/4r3/3nr3

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Qxf3#
    • 1...Sc6
      • 2.Bb3#
    • 1...c6
      • 2.Bb3#
  • Keys
    • 1.Se4!
      • threat
        • 2.Qf5#
      • 1...Kxe4
        • 2.Qxf3#
      • 1...Rxe4
        • 2.Bb3#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bh7
        • 2.Qe6#
      • 1...Se3
        • 2.Sxc3#
      • 1...Sc6
        • 2.Bxc6#
      • 1...Sd7
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(a);S_CUTR(c)::QAB(A),XP(e)
    • S(h);SBLOCK::B(B)
    • P(g);SBLOCK::B(B)
  • Actual
    • S(E);
    • Threat
      • QAR2(A)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XS(E)::QAB1(A),XP(e)
      • R(c);SBLOCK,XS(E)::B(B)
      • B(i);N_GUARD::QAB1(A),XB(i)
      • B(i);N_GUARD::QAB1(A)
      • S(a);N_GUARD::S(E),XP(d)
      • S(h);N_GUARD::B(B),XS(h)
      • S(h);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).