MESON Chess Problem Database

Problem Display
PID: 187742 (4R3/1Qnk1P2/6K1/8/8/8/8/8 w - - 0 1)

Strong, H

Chess Amateur (The), 1909

4R3/1Qnk1P2/6K1/8/8/8/8/8

#2

4 + 2

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qb5+?
      • 1...Kd6
        • 2.f8Q#
        • 2.f8B#
      • 1...Sxb5!
  • Keys
    • 1.f8B!
      • 1...Kxe8
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK,N_PINS(a)
      • Vars
        • K(b);P-FLIGHT::P=Q
      • Refutation
        • S(a);XQ(B)
  • Actual
    • P(C);
    • Vars
      • K(b);N_SPINS(a),S_FLIGHT,XR(D)::QAR2(B)
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).