MESON Chess Problem Database

Problem Display
PID: 22211 (2BK1N2/8/5P2/5Nk1/1Q4P1/5p1p/5P1P/B7 w - - 0 1)

Harth, Arthur R

Northwest Chess, 1975

2BK1N2/8/5P2/5Nk1/1Q4P1/5p1p/5P1P/B7

#2

10 + 3

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Se3?
      • 1...Kh6
        • 2.Qf4#
      • 1...Kh4!
    • 1.Sg3?
      • 1...Kh6
        • 2.Qd2#
        • 2.Qf4#
      • 1...Kh4!
    • 1.Sh4?
      • 1...Kh6
        • 2.Qd2#
        • 2.Qf4#
      • 1...Kxh4!
    • 1.Sd6?
      • 1...Kh6
        • 2.Sf7#
        • 2.Qd2#
        • 2.Qf4#
      • 1...Kh4!
    • 1.Sh6?
      • 1...Kxh6
        • 2.Qd2#
        • 2.Qf4#
      • 1...Kh4!
    • 1.Se7?
      • 1...Kh6
        • 2.Qd2#
        • 2.Qf4#
      • 1...Kh4!
    • 1.Sg7?
      • 1...Kh6
        • 2.Qd2#
        • 2.Qf4#
      • 1...Kh4!
  • Keys
    • 1.Sd4!
      • 1...Kf4
        • 2.Sde6#
      • 1...Kh4
        • 2.Sxf3#
      • 1...Kxf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qd2#

This anticipates 142950(1992)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(c);S_FLIGHT::QAB(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);
      • Refutation
        • K(c);S_FLIGHT,XS(F)
    • Try
      • S(F);
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(F);
    • Vars
      • K(c);S_FLIGHT::QAR(D)+S(F),DCHECK
      • K(c);S_FLIGHT::S(F),XP(a)
      • K(c);OGATEB,S_FLIGHT,XP(G)::QAB1(D)
      • K(c);S_FLIGHT::QAB(D)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).