MESON Chess Problem Database

Problem Display
PID: 194241 (b6K/Q7/3P1R2/2N1k3/1P5p/4N1b1/3n4/R5Bq w - - 0 1)

Wilhelm, Joseph A

Pittsburgh Gazette-Times, 1917

b6K/Q7/3P1R2/2N1k3/1P5p/4N1b1/3n4/R5Bq

#2

9 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Qg7#
    • 1...Qe4
      • 2.Sd7#
    • 1...Qd5
      • 2.Sg4#
    • 1...Be4
      • 2.Sd7#
    • 1...Bd5
      • 2.Sg4#
    • 1...Se4
      • 2.Sd7#
  • Tries
    • 1.Rf5+?
      • 1...Kxd6
        • 2.Qd7#
      • 1...Kd4!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Qa1#
      • 1...Kd4
        • 2.Qa1#
      • 1...Kxf6
        • 2.Qg7#
      • 1...Sb3
        • 2.Sg4#
        • 2.Rf5#
        • 2.Qe7#
      • 1...Qe4
        • 2.Sd7#
      • 1...Qd5
        • 2.Sg4#
      • 1...Sb1
        • 2.Sg4#
        • 2.Rf5#
        • 2.Qe7#
      • 1...Sf3
        • 2.Sg4#
        • 2.Rf5#
        • 2.Qe7#
      • 1...Sc4
        • 2.Sg4#
        • 2.Rf5#
        • 2.Qe7#
      • 1...Se4
        • 2.Sg4#
        • 2.Sd7#
        • 2.Rf5#
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(e);OGATEB,S_FLIGHT,XR(G)::QAB1(H)
    • Q(a);SBLOCK::S(E)
    • Q(a);SBLOCK::S(C)
    • B(f);SBLOCK::S(E)
    • B(f);SBLOCK::S(C)
    • S(b);SBLOCK::S(E)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(e);S_FLIGHT,XP(F)::QAR1(H)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • R(A);
    • Threat
      • QAB(H)
    • Vars
      • K(e);P_SPINS(b),S_FLIGHT::QAB(H)
      • K(e);OGATEB,S_FLIGHT,XR(G)::QAB1(H)
      • Q(a);SBLOCK::S(E)
      • Q(a);SBLOCK::S(C)
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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).