MESON Chess Problem Database

Problem Display
PID: 139671 (8/4NK2/2P5/4k1p1/8/2n5/B1nQ4/2B5 w - - 0 1)

Tucker, FJ

The Problemist, 1937

8/4NK2/2P5/4k1p1/8/2n5/B1nQ4/2B5

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Qd5#
    • 1...Sd1
      • 2.Qd5#
    • 1...Sxa2
      • 2.Qd5#
    • 1...Se2
      • 2.Qd5#
    • 1...Sa4
      • 2.Qd5#
    • 1...Se4
      • 2.Qd5#
    • 1...Sb5
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...g4
      • 2.Qf4#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Sg6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Se4
        • 2.Qd5#
      • 1...Sd4!
  • Keys
    • 1.Bb1!
      • 1...Ke4
        • 2.Qe3#
      • 1...Sxb1
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sa1
        • 2.Sg6#
      • 1...Se1
        • 2.Sg6#
      • 1...Sa3
        • 2.Sg6#
      • 1...Se3
        • 2.Sg6#
      • 1...Sb4
        • 2.Sg6#
      • 1...Sd4
        • 2.Qh2#
      • 1...Sd1
        • 2.Qd5#
      • 1...Sa2
        • 2.Qd5#
      • 1...Se2
        • 2.Qd5#
      • 1...Sa4
        • 2.Qd5#
      • 1...Se4
        • 2.Qd5#
      • 1...Sb5
        • 2.Qd5#
      • 1...g4
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAR1(C)
    • S(b);N_GUARD,XB(B)::QAR1(C)
    • S(b);N_GUARD::QAR1(C),XS(b)
    • P(d);N_GUARD::QAB1(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • S(E)
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • S(a);
  • Actual
    • B(B);
    • Vars
      • K(c);P-FLIGHT,P_SPINS(a)::QAR1(C)
      • S(b);N_GUARD,XB(B)::QAR1(C)
      • S(b);N_GUARD::QAR1(C),XS(b)
      • S(a);::S(E)
      • S(a);SBLOCK::QAB(C)
      • S(b);N_GUARD::QAR1(C)
      • P(d);N_GUARD::QAB1(C)
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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).