MESON Chess Problem Database

Problem Display
PID: 173167 (3r3r/2QpRB1k/2P1NR2/8/2p1P3/1K1B4/8/8 w - - 0 1)

Ling, John Francis

Problem Observer, 2006

3r3r/2QpRB1k/2P1NR2/8/2p1P3/1K1B4/8/8

#2

9 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kc3?
      • threat
        • 2.Qh2#
      • 1...dxe6
        • 2.Bxe6#
      • 1...d6!
  • Keys
    • 1.Kxc4!
      • threat
        • 2.Qh2#
        • 2.e5#
      • 1...d5+
        • 2.exd5#
      • 1...dxc6
        • 2.Qh2#
      • 1...dxe6
        • 2.Bxe6#
      • 1...Rhe8
        • 2.Qh2#
      • 1...Rhf8
        • 2.Qh2#
      • 1...Rhg8
        • 2.Qh2#
      • 1...d6
        • 2.e5#
      • 1...Rdg8
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = WHITE_IN_CHECK
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR(G)
      • Vars
        • P(b);OGATE,XS(E)::R(H)+B(I),XP(b)
      • Refutation
        • P(b);
  • Actual
    • K(A);S_FLIGHT,XP(a)
    • Threat
      • DUALS(2)
    • Vars
      • P(b);CHECK,OGATE::B(B)+P(C),XP(b)
      • P(b);XP(D)::QAR(G)
      • P(b);OGATE,XS(E)::R(H)+B(I),XP(b)
      • R(e);::QAR(G)
      • P(b);::B(B)+P(C)
      • R(d);::QAR(G)
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).