MESON Chess Problem Database

Problem Display
PID: 200792 (7K/2Qp4/2bP4/2n2R1p/Ppk4r/1r3NR1/1p2P3/4BN1B w - - 0 1)

Shire, David J

The Problemist, 1983

7K/2Qp4/2bP4/2n2R1p/Ppk4r/1r3NR1/1p2P3/4BN1B

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.S1d2#
    • 1...Rd4
      • 2.Se5#
    • 1...Bxf3
      • 2.Qxc5#
    • 1...Bxa4
      • 2.Rxc5#
      • 2.Qxc5#
    • 1...Be4
      • 2.Rxc5#
      • 2.Qxc5#
    • 1...Bb5
      • 2.Rxc5#
      • 2.Qxc5#
    • 1...Bb7
      • 2.Rxc5#
      • 2.Qxc5#
    • 1...Ba8
      • 2.Rxc5#
      • 2.Qxc5#
    • 1...Sd3
      • 2.Se3#
  • Keys
    • 1.Qb6!
      • threat
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Rxf3
        • 2.Qxb4#
      • 1...Bxf3
        • 2.Qxc5#
      • 1...Sxa4
        • 2.S3d2#
        • 2.Se5#
      • 1...Ra3
        • 2.Qxb4#
      • 1...Rc3
        • 2.S1d2#
      • 1...Rd3
        • 2.Qxb4#
      • 1...Re3
        • 2.Qxb4#
      • 1...Se4
        • 2.Qd4#
      • 1...Bd5
        • 2.Qb5#
      • 1...Sd3
        • 2.Se3#
      • 1...Sa6
        • 2.S3d2#
        • 2.Se5#
      • 1...Se6
        • 2.S3d2#
        • 2.Se5#
      • 1...Sb7
        • 2.S3d2#
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(b);SBLOCK::S(B)
    • R(e);SBLOCK::S(E)
    • B(h);OGATE,P_SPINS(f),XS(E)::QAR1(J),XS(f)
    • S(f);P_SPINB(h),S_CUTR(b)::S(B)
  • Actual
    • Q(J);
    • Threat
      • DUALS(2)
    • Vars
      • R(b);N_GUARD,XS(E)::QAR1(J),XP(c)
      • B(h);XS(E)::QAR1(J),XS(f)
      • R(b);N_GUARD::QAR1(J),XP(c)
      • R(b);SBLOCK::S(B)
      • S(f);OGATE::QAR1(J)
      • B(h);N_GUARD::QAB1(J)
      • S(f);S_CUTR(b)::S(B)
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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).