MESON Chess Problem Database

Problem Display
PID: 120682 (8/4p1p1/4p1Pb/2K1k1rn/R3P2B/p5p1/P3R1P1/5Q2 w - - 0 1)

Neill, Benjamin Milnes

Philadelphia Times, 1881

8/4p1p1/4p1Pb/2K1k1rn/R3P2B/p5p1/P3R1P1/5Q2

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qa1#
  • Tries
    • 1.Qf8?
      • 1...Rxg6
        • 2.Qb8#
      • 1...Rf5
        • 2.Qb8#
      • 1...Sf6
        • 2.Qb8#
      • 1...Rg4
        • 2.Qb8#
      • 1...Sf4!
  • Keys
    • 1.Qb1!
      • 1...Kf4+
        • 2.e5#
      • 1...Kf6+
        • 2.e5#
      • 1...Rxg6
        • 2.Qb8#
      • 1...Rg4
        • 2.Qb8#
      • 1...Rf5
        • 2.Qb8#
      • 1...Sf4
        • 2.Qa1#
      • 1...Sf6
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(e);SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • R(d);XP(I)::QAB(A)
        • R(d);::QAB(A)
        • S(e);SBLOCK::QAB(A)
      • Refutation
        • S(e);
  • Actual
    • Q(A);
    • Vars
      • K(c);CHECK,OGATE,S_FLIGHT::R(E)+P(F)
      • K(c);CHECK,OGATE,P_SPINR(d),S_FLIGHT::P(F)
      • R(d);XP(I)::QAB(A)
      • R(d);::QAB(A)
      • S(e);SBLOCK::QAB(A)
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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).