MESON Chess Problem Database

Problem Display
PID: 141187 (8/3pp3/8/K7/3kp3/2R3Qb/P2pP3/3N4 w - - 0 1)

Leopold, Dr Rudolf L

Brisbane Courier, 1913

8/3pp3/8/K7/3kp3/2R3Qb/P2pP3/3N4

#2

6 + 6

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.e3#
    • 1...e6
      • 2.Qd6#
  • Tries
    • 1.Rd3+?
      • 1...Kc4
        • 2.Qc7#
      • 1...Kc5
        • 2.Qc7#
      • 1...exd3!
    • 1.Rc5?
      • threat
        • 2.Qe5#
        • 2.Qc3#
        • 2.Qe3#
      • 1...e3
        • 2.Qe5#
        • 2.Qxe3#
      • 1...d5
        • 2.Qc3#
      • 1...d6
        • 2.Qc3#
        • 2.Qe3#
      • 1...e5
        • 2.Qxe5#
        • 2.Qc3#
        • 2.Qe3#
      • 1...Kxc5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Rc4#
      • 1...Kxc3
        • 2.Qe5#
      • 1...Be6
        • 2.Qg7#
      • 1...d5
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(e);SBLOCK::P(C)
    • P(f);N_GUARD::QAR2(E)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR(E)
        • K(c);S_FLIGHT::QAR2(E)
      • Refutation
        • P(d);XR(D)
    • Try
      • R(D);
      • Threat
        • DUALS(3)
      • Vars
        • P(e);::QAB1(E)
      • Refutation
        • K(c);S_FLIGHT,XR(D)
  • Actual
    • S(A);
    • Threat
      • R1(D)
    • Vars
      • K(c);S_FLIGHT,XR(D)::QAB(E)
      • B(b);S_CUTP(f)::QAB(E)
      • P(e);SBLOCK::S(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).