MESON Chess Problem Database

Problem Display
PID: 9452 (K7/2p3N1/2P3p1/4k1P1/2P1N1r1/B6B/8/4Q3 w - - 0 1)

Bonner Feast, Frederick

Leeds Mercury, 1903

K7/2p3N1/2P3p1/4k1P1/2P1N1r1/B6B/8/4Q3

#2

9 + 4

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Bb2#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Bb2#
      • 1...Rg2
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sd6#
        • 2.Sf6#
      • 1...Rxe4!
  • Keys
    • 1.Se6!
      • 1...Kf5
        • 2.Sg3#
      • 1...Kxe6
        • 2.Sd6#
      • 1...Rxe4
        • 2.Qa5#
      • 1...Rxg5
        • 2.Bb2#
      • 1...Rg1
        • 2.Bb2#
      • 1...Rg2
        • 2.Sf2#
      • 1...Rg3
        • 2.Sxg3#
      • 1...Rf4
        • 2.Bb2#
      • 1...Rh4
        • 2.Bb2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK::B(B)
  • Tries
    • Try
      • Q(A);
      • Threat
        • B(B)
      • Refutation
        • R(a);P_SPINR(a),XS(E)
  • Actual
    • S(H);
    • Vars
      • K(b);P-FLIGHT,P_SPINR(a)::S(E)
      • K(b);P-FLIGHT,P_SPINR(a),XS(H)::QAR(A)+S(E)
      • R(a);P_SPINR(a),SBLOCK,XS(E)::QAR(A)
      • R(a);XP(F)::B(B)
      • R(a);::B(B)
      • R(a);N_GUARD::QAR(A)+S(E)
      • R(a);N_GUARD::QAR(A)+S(E),XR(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).