MESON Chess Problem Database

Problem Display
PID: 1949 (4K3/5p2/4pk2/2R1pN1P/B3r3/6P1/3Q4/8 w - - 0 1)

Cook, Eugene Beauharnais

Cincinnati Sunday Dispatch, 1859

4K3/5p2/4pk2/2R1pN1P/B3r3/6P1/3Q4/8

#2

7 + 5

1679 American Chess Nuts 1868
5656 Sammlung Leichterer Schachaufgaben I (Dufresne) 1881

SOLUTION

  • SOUND
  • Sets
    • 1...exf5
      • 2.Qh6#
  • Tries
    • 1.g4?
      • threat
        • 2.Qh6#
        • 2.Qd8#
      • 1...exf5
        • 2.Qh6#
      • 1...Re3
        • 2.Qd8#
      • 1...Rf4
        • 2.Qd8#
      • 1...Rd4
        • 2.Qh6#
      • 1...Rxg4!
  • Keys
    • 1.Bc2!
      • 1...Kxf5
        • 2.Qf4#
      • 1...exf5
        • 2.Qh6#
      • 1...Re1
        • 2.Qh6#
        • 2.Qd8#
      • 1...Re2
        • 2.Qh6#
        • 2.Qd8#
      • 1...Re3
        • 2.Qd8#
      • 1...Ra4
        • 2.Qh6#
        • 2.Qd8#
      • 1...Rb4
        • 2.Qh6#
        • 2.Qd8#
      • 1...Rc4
        • 2.Qh6#
        • 2.Qd8#
      • 1...Rd4
        • 2.Qh6#
      • 1...Rf4
        • 2.Qd8#
      • 1...Rg4
        • 2.Qd8#
      • 1...Rh4
        • 2.Qh6#
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK,XS(E)::QAR2(A)
  • Tries
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XS(E)::QAR2(A)
        • R(a);::QAB(A)
        • R(a);::QAR2(A)
      • Refutation
        • R(a);XP(B)
  • Actual
    • B(C);
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINP(b),P_SPINR(a),XS(E)::QAR1(A)
      • P(c);SBLOCK,XS(E)::QAR2(A)
      • R(a);::QAB(A)
      • R(a);::QAR2(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).