MESON Chess Problem Database

Problem Display
PID: 193358 (7n/3K2p1/2R5/5kN1/p1pP1p2/4P3/2b2nQ1/8 w - - 0 1)

Williams, JD

The Dux, 1914

7n/3K2p1/2R5/5kN1/p1pP1p2/4P3/2b2nQ1/8

#2

6 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.e4#
  • Tries
    • 1.Rc5+?
      • 1...Kf6
        • 2.Qc6#
      • 1...Kg6!
  • Keys
    • 1.Sh7!
      • threat
        • 2.Rc5#
      • 1...fxe3
        • 2.Qf3#
      • 1...f3
        • 2.Qxf3#
      • 1...Be4
        • 2.Qg5#
      • 1...Sd3
        • 2.e4#
      • 1...Se4
        • 2.Qh3#
      • 1...Sg4
        • 2.Qxc2#
      • 1...Sg6
        • 2.Qxg6#
      • 1...Sf7
        • 2.Qg6#
      • 1...g5
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD,S_CUTB(a)::P(B)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR(A)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • S(D);
    • Threat
      • R(E)
    • Vars
      • P(e);OGATEB,XP(B)::QAR2(A)
      • P(e);OGATEB::QAR2(A),XP(e)
      • B(a);SBLOCK::QAR1(A)
      • S(b);N_GUARD,S_CUTB(a)::P(B)
      • S(b);N_GUARD,SBLOCK::QAB(A)
      • S(b);OGATE,SBLOCK::QAB(A),XB(a)
      • S(h);N_GUARD::QAB1(A),XS(h)
      • S(h);N_GUARD::QAB1(A)
      • P(g);N_GUARD::R1(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).