MESON Chess Problem Database

Problem Display
PID: 145905 (6q1/8/4n3/3Q4/6r1/2B1N1k1/2n3P1/6K1 w - - 0 1)

Richardson, Charles

Good Companions (December Meredith Ty.), 1917

6q1/8/4n3/3Q4/6r1/2B1N1k1/2n3P1/6K1

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qe5#
    • 1...Rh4
      • 2.Qf3#
    • 1...Sf4
      • 2.Sf5#
  • Tries
    • 1.Sf1+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kh4!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qh2#
      • 1...Kf4
        • 2.Qe5#
      • 1...Qh7
        • 2.Qxg4#
      • 1...Qh8
        • 2.Qxg4#
      • 1...Rh4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);P_PINP(B),S_FLIGHT::QAB1(E)
    • R(c);SBLOCK::QAR1(E)
    • S(d);SBLOCK::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P_PINP(B),S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);P_PINP(B),S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);P_PINP(B),S_FLIGHT::QAB1(E)
      • Q(e);N_GUARD::QAR1(E),XR(c)
      • R(c);OGATE,SBLOCK::QAR1(E)
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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).