MESON Chess Problem Database

Problem Display
PID: 18417 (1R6/8/2N5/KNp5/8/1k1p1p1p/7r/2Q2b1q w - - 0 1)

Andrade, Barry Jack da Costa

Time & Tide, 1955

1R6/8/2N5/KNp5/8/1k1p1p1p/7r/2Q2b1q

#2

5 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ka2
      • 2.Sc3#
    • 1...Ra2+
      • 2.Sa3#
    • 1...c4
      • 2.Sc3#
  • Tries
    • 1.Scd4+?
      • 1...Ka2
        • 2.Sc3#
      • 1...cxd4!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sc3#
      • 1...Ra2+
        • 2.Sa3#
      • 1...Ka2
        • 2.Sc3#
      • 1...Rb2
        • 2.Qc4#
      • 1...Rc2
        • 2.Qa3#
      • 1...d2
        • 2.Qb1#
      • 1...f2
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(d);S_FLIGHT::S(C)
    • R(c);CHECK,SBLOCK::R(E)+S(C)
    • P(h);SBLOCK::R(E)+S(C)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);S_FLIGHT::S(C)
      • Refutation
        • P(h);XS(D)
  • Actual
    • S(D);
    • Threat
      • R(E)+S(C)
    • Vars
      • R(c);CHECK,SBLOCK::R(E)+S(C)
      • K(d);S_FLIGHT::S(C)
      • R(c);SBLOCK::QAB1(A)
      • R(c);SBLOCK::QAR1(A)
      • P(e);S_CUTR(c)::QAR2(A)
      • P(f);S_CUTR(c)::QAR2(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).