MESON Chess Problem Database

Problem Display
PID: 180723 (2b3K1/3p3R/4k3/8/3Q2P1/8/8/8 w - - 0 1)

Howard, David M

Problem Observer, 2012

2b3K1/3p3R/4k3/8/3Q2P1/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kf8?
      • threat
        • 2.Rh6#
        • 2.Re7#
      • 1...d6
        • 2.Re7#
      • 1...d5!
    • 1.Qe4+?
      • 1...Kf6
        • 2.Qf5#
      • 1...Kd6!
    • 1.Qd5+?
      • 1...Kf6
        • 2.Qf5#
      • 1...Kxd5!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Rh6#
      • 1...Kf6
        • 2.Rh6#
        • 2.Qf5#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::R1(C)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Threat
      • R(C)
    • Vars
      • P(b);SBLOCK::QAR1(A)
      • P(b);SBLOCK::QAB1(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).