MESON Chess Problem Database

Problem Display
PID: 141188 (2n5/1p6/b7/8/1kp5/R3Q3/P7/1NK5 w - - 0 1)

Friedlander, Louis

Pittsburgh Sun, 1915

(First published on Sun Apr 11 1915)

2n5/1p6/b7/8/1kp5/R3Q3/P7/1NK5

#2

5 + 5

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Ra5?
      • threat
        • 2.Qc5#
        • 2.Qa3#
        • 2.Qc3#
      • 1...c3
        • 2.Qc5#
        • 2.Qxc3#
      • 1...Bb5
        • 2.Qa3#
      • 1...b5
        • 2.Qa3#
      • 1...b6
        • 2.Qa3#
        • 2.Qc3#
      • 1...Kxa5!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Ra4#
      • 1...Kxa3
        • 2.Qc5#
      • 1...Bb5
        • 2.Sd5#
      • 1...Sb6
        • 2.Qe7#
      • 1...b5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Threat
        • DUALS(3)
      • Vars
        • B(c);::QAB1(E)
        • P(d);::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
  • Actual
    • S(A);
    • Threat
      • R1(D)
    • Vars
      • K(a);S_FLIGHT,XR(D)::QAB(E)
      • B(c);SBLOCK::S(A)
      • S(e);N_GUARD::QAB(E)
      • P(d);SBLOCK::S(A)
HTML5 logo

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).