MESON Chess Problem Database

Problem Display
PID: 10993 (5R2/2B2p2/4k3/4P3/2K5/8/8/3Q4 w - - 0 1)

Meyer, Heinrich Friedrich Ludwig

Boys' Own Paper, 1898

5R2/2B2p2/4k3/4P3/2K5/8/8/3Q4

#2

5 + 2

5501 Chess Cameos 1936
3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Ke7
      • 2.Qd6#
    • 1...f5
      • 2.Qd6#
  • Tries
    • 1.Rd8?
      • threat
        • 2.Qd7#
      • 1...Ke7
        • 2.Qd6#
        • 2.Qd7#
      • 1...Kf5!
    • 1.Qd3?
      • threat
        • 2.Re8#
      • 1...Ke7
        • 2.Qd6#
      • 1...f5
        • 2.Qd6#
      • 1...f6!
    • 1.Qd5+?
      • 1...Ke7
        • 2.Qxf7#
        • 2.Qd6#
      • 1...Kf5!
    • 1.Qd8?
      • 1...f6
        • 2.Rxf6#
      • 1...f5
        • 2.Rf6#
        • 2.Qd6#
        • 2.Qe8#
      • 1...Kf5!
  • Keys
    • 1.Qg4+!
      • 1...Ke7
        • 2.Bd6#
      • 1...f5
        • 2.exf5 ep#

This is a version

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAB1(A)
    • P(b);::QAR1(A)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • R(E)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • P(b);::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);OGATE::R1(E),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(A);CHECK
    • Vars
      • K(a);P-FLIGHT::B(D)
      • P(b);OGATE,P_SPINP(b)::QAB(A)+P(C),XP(b),EP
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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).