MESON Chess Problem Database

Problem Display
PID: 250839 (2Kn4/8/3R4/2P1k3/7r/5Q2/3PP3/b7 w - - 0 1)

Smedley, Don A

The Problemist, 1991

2Kn4/8/3R4/2P1k3/7r/5Q2/3PP3/b7

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qf6#
    • 1...Rf4
      • 2.Qd5#
    • 1...Se6
      • 2.Rd5#
  • Tries
    • 1.Qe3+?
      • 1...Re4
        • 2.Qg5#
      • 1...Kf5!
    • 1.e3?
      • threat
        • 2.Qd5#
      • 1...Re4
        • 2.Qh5#
        • 2.Qf6#
      • 1...Se6
        • 2.Rd5#
      • 1...Rd4!
  • Keys
    • 1.d3!
      • threat
        • 2.Qf6#
      • 1...Rf4
        • 2.Qd5#
      • 1...Rh6
        • 2.Qe4#
      • 1...Se6
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(b);SBLOCK::QAB1(C)
    • R(b);SBLOCK::QAR1(C)
    • S(d);SBLOCK::R1(E)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • R(b);P_SPINR(b),SBLOCK::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(B);
      • Threat
        • QAR1(C)
      • Vars
        • S(d);SBLOCK::R1(E)
      • Refutation
        • R(b);
  • Actual
    • P(A);
    • Threat
      • QAB1(C)
    • Vars
      • R(b);SBLOCK::QAR1(C)
      • R(b);N_GUARD::QAR1(C)
      • S(d);SBLOCK::R1(E)
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).