MESON Chess Problem Database

Problem Display
PID: 140041 (b1r4k/1PRp4/5Pp1/6p1/6P1/7B/Q5PR/5N1K w - - 0 1)

Boorer, PA

The Problemist, 1938

b1r4k/1PRp4/5Pp1/6p1/6P1/7B/Q5PR/5N1K

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.bxc8Q#
      • 2.bxc8R#
    • 1...d6
      • 2.bxc8Q#
      • 2.bxc8R#
  • Tries
    • 1.Qf7?
      • threat
        • 2.Rxc8#
        • 2.Qg7#
        • 2.bxc8Q#
        • 2.bxc8R#
      • 1...Rxc7
        • 2.Qg7#
      • 1...Bxb7
        • 2.Qg7#
      • 1...Rb8
        • 2.Qg7#
      • 1...Rd8
        • 2.Qg7#
      • 1...Re8
        • 2.Qg7#
      • 1...Rf8
        • 2.Qg7#
      • 1...d5
        • 2.Rxc8#
        • 2.Qg7#
        • 2.Qh7#
        • 2.bxc8Q#
        • 2.bxc8R#
      • 1...d6
        • 2.Rxc8#
        • 2.Qg7#
        • 2.Qh7#
        • 2.bxc8Q#
        • 2.bxc8R#
      • 1...Rg8!
  • Keys
    • 1.g3!
      • threat
        • 2.Bg2#
      • 1...Kh7
        • 2.Bg2#
      • 1...d5
        • 2.bxc8Q#
        • 2.bxc8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);::PXR(e)=Q
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(4)
      • Vars
        • R(e);XR(J)::QAB1(C)
        • B(d);P_PINP(D),XP(I)::QAB1(C)
        • R(e);::QAB1(C)
      • Refutation
        • R(e);
  • Actual
    • P(D);P_SPINP(I)
    • Threat
      • R(E)+B(F)
    • Vars
      • K(f);P-FLIGHT,P_SPINP(c)::R(E)+B(F)
      • P(c);N_PINP(I)::PXR(e)=Q
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).