MESON Chess Problem Database

Problem Display
PID: 267097 (5K2/1N6/PBkPB1N1/P1P2R2/1pP4b/7b/5n2/3rqr1n w - - 0 1)

Driver, John Edward

The Problemist, 1955

5K2/1N6/PBkPB1N1/P1P2R2/1pP4b/7b/5n2/3rqr1n

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Se5#
    • 1...Qe5
      • 2.Sxe5#
    • 1...Bg3
      • 2.Se7#
      • 2.Sd8#
    • 1...Be7+
      • 2.Sxe7#
    • 1...Bd8
      • 2.Sxd8#
    • 1...Se4
      • 2.Se5#
  • Keys
    • 1.Rf7!
      • threat
        • 2.Rc7#
      • 1...Be7+
        • 2.Sxe7#
      • 1...Bd8
        • 2.Sxd8#
      • 1...Sd3
        • 2.Bd5#
      • 1...Se4
        • 2.Se5#
      • 1...Sg4
        • 2.Bd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_GUARD::S(I)
    • Q(b);N_GUARD::S(I),XQ(b)
    • B(h);CHECK,N_GUARD::S(I),XB(h)
    • B(h);N_GUARD::S(J),XB(h)
    • S(e);P_PINR(D),S_CUTQ(b)::S(I)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • B(h);CHECK,N_GUARD::S(I),XB(h)
      • B(h);N_GUARD::S(J),XB(h)
      • S(e);P_PINR(D),S_CUTR(a)::B(H)
      • S(e);P_PINR(D),S_CUTQ(b)::S(I)
      • S(e);P_PINR(D),S_CUTB(f)::B(H)
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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).