MESON Chess Problem Database

Problem Display
PID: 223168 (3N1Q2/2p5/1P1n4/B1k1p3/Kn3N2/1P1pP3/3P4/8 w - - 0 1)

Keller, ?

Philadelphia Times, 1886

3N1Q2/2p5/1P1n4/B1k1p3/Kn3N2/1P1pP3/3P4/8

#2

9 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Sxd3#
      • 2.Sfe6#
    • 1...Sc6
      • 2.Sde6#
      • 2.Sb7#
    • 1...cxb6
      • 2.Bxb4#
    • 1...c6
      • 2.Sde6#
      • 2.Sb7#
  • Keys
    • 1.Qf6!
      • 1...exf4
        • 2.Qd4#
      • 1...cxb6
        • 2.Bxb4#
      • 1...Sa2
        • 2.Qxe5#
      • 1...Sc2
        • 2.Qxe5#
      • 1...Sd5
        • 2.Sxd3#
        • 2.Sfe6#
      • 1...Sa6
        • 2.Qxe5#
      • 1...Sc6
        • 2.Sde6#
      • 1...Sc4
        • 2.Sb7#
        • 2.Bxb4#
      • 1...Se4
        • 2.Sb7#
        • 2.Bxb4#
      • 1...Sb5
        • 2.Sb7#
        • 2.Bxb4#
      • 1...Sf5
        • 2.Sb7#
        • 2.Bxb4#
      • 1...Sb7
        • 2.Sxb7#
        • 2.Bxb4#
      • 1...Sf7
        • 2.Sb7#
        • 2.Bxb4#
      • 1...Sc8
        • 2.Sb7#
        • 2.Bxb4#
      • 1...Se8
        • 2.Sb7#
        • 2.Bxb4#
      • 1...e4
        • 2.Qd4#
      • 1...c6
        • 2.Sde6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(f);SBLOCK,XP(G)::B(F),XS(b)
  • Actual
    • Q(I);N_PINS(e)
    • Vars
      • P(d);OGATE,XS(E)::QAB1(I)
      • P(f);SBLOCK,XP(G)::B(F),XS(b)
      • S(b);N_GUARD::QAR2(I),XP(d)
      • S(b);SBLOCK::S(H)
      • P(d);OGATE::QAB1(I)
      • P(f);SBLOCK::S(H)
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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).