MESON Chess Problem Database

Problem Display
PID: 143669 (Q7/8/8/4N3/p7/P2Bk3/3N4/2B4K w - - 0 1)

Colville, Robert A

British Chess Magazine, 1896

Q7/8/8/4N3/p7/P2Bk3/3N4/2B4K

#2

7 + 2

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Kg2?
      • threat
        • 2.Sb3#
        • 2.Sdf3#
        • 2.Qe4#
      • 1...Kf4
        • 2.Sdf3#
        • 2.Sdc4#
      • 1...Kd4!
    • 1.Qg2?
      • threat
        • 2.Sb3#
        • 2.Sdf3#
      • 1...Kf4
        • 2.Sdf3#
        • 2.Sdc4#
      • 1...Kd4!
    • 1.Qd5?
      • threat
        • 2.Se4#
      • 1...Kf4
        • 2.Sf1#
      • 1...Kf2!
    • 1.Qg8?
      • 1...Kf2
        • 2.Qg1#
      • 1...Kf4
        • 2.Sdf3#
        • 2.Sdc4#
      • 1...Kd4!
  • Keys
    • 1.Qa5!
      • 1...Kf2
        • 2.Se4#
      • 1...Kd4
        • 2.Sdf3#
      • 1...Kf4
        • 2.Sf1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(3)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • B(A)+S(C)
      • Vars
        • K(a);S_FLIGHT::B(A)+S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::S(C)
      • K(a);S_FLIGHT::B(A)+S(C)
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).