MESON Chess Problem Database

Problem Display
PID: 152135 (8/n2p1K1p/Pp3pNP/2pkB3/Q7/1Np1p3/2P1P1p1/1B5b w - - 0 1)

Keeble, John Frederick

Good Companions (April), 1915

8/n2p1K1p/Pp3pNP/2pkB3/Q7/1Np1p3/2P1P1p1/1B5b

#2

10 + 11

SOLUTION

  • SOUND
  • Tries
    • 1.Qxd7+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc4!
    • 1.Qc4+?
      • 1...Kc6
        • 2.Sd4#
        • 2.Se7#
      • 1...Kxc4!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Qxd7#
        • 2.Qe4#
      • 1...cxd2
        • 2.c4#
      • 1...exd2
        • 2.e4#
      • 1...fxe5
        • 2.Qxd7#
      • 1...hxg6
        • 2.Qe4#
      • 1...Sb5
        • 2.Qe4#
      • 1...c4
        • 2.Qxc4#
      • 1...b5
        • 2.Qe4#
      • 1...g1Q
        • 2.Qxd7#
      • 1...g1S
        • 2.Qxd7#
      • 1...g1B
        • 2.Qxd7#
      • 1...g1R
        • 2.Qxd7#
      • 1...Sc6
        • 2.Qc4#
        • 2.Qe4#
      • 1...Sc8
        • 2.Qe4#
      • 1...f5
        • 2.Qxd7#
      • 1...d6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK,XP(j)
      • Vars
        • K(f);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(f);S_FLIGHT,XQ(E)
  • Actual
    • S(D);
    • Threat
      • DUALS(2)
    • Vars
      • P(c);OGATE,XS(D)::P(B)
      • P(d);OGATE,XS(D)::P(C)
      • P(h);XB(F)::QAR2(E),XP(j)
      • P(k);XS(H)::QAB1(E)
      • S(i);::QAB1(E)
      • P(e);::QAB1(E),XP(e)
      • P(g);::QAB1(E)
      • P(b);::QAR2(E),XP(j)
      • P(h);::QAR2(E),XP(j)
      • P(j);::QAB1(E)
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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).