MESON Chess Problem Database

Problem Display
PID: 268082 (3R4/5K1B/8/4k1pN/8/4bP1R/2n3b1/6Q1 w - - 0 1)

Anyfantis, Georgios C

The Problemist, 1999

3R4/5K1B/8/4k1pN/8/4bP1R/2n3b1/6Q1

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qc5#
    • 1...Bd2
      • 2.Qc5#
    • 1...Bd4
      • 2.Qh2#
    • 1...Bf4
      • 2.Qc5#
    • 1...Bc5
      • 2.Qh2#
      • 2.Qxc5#
    • 1...Bb6
      • 2.Qh2#
    • 1...Ba7
      • 2.Qh2#
    • 1...Sa1
      • 2.Qxe3#
    • 1...Se1
      • 2.Qxe3#
    • 1...Sa3
      • 2.Qxe3#
    • 1...Sb4
      • 2.Qxe3#
    • 1...Sd4
      • 2.Qxe3#
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sd3#
      • 1...Kxf4
        • 2.Qh2#
      • 1...Bxf4
        • 2.Qc5#
      • 1...gxf4
        • 2.Rh5#
      • 1...Bf1
        • 2.Qxg5#
      • 1...Se1
        • 2.Qxe3#
      • 1...Sb4
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • B(c);OGATE::QAR2(A)
    • B(c);N_GUARD::QAB(A)
    • S(a);N_GUARD::QAR2(A),XB(c)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(D)::QAB(A)
      • B(c);OGATE,SBLOCK,XS(D)::QAR2(A)
      • P(e);OGATEB,SBLOCK,XS(D)::R(C)
      • B(b);OGATE::QAR2(A),XP(e)
      • S(a);N_GUARD::QAR2(A),XB(c)
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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).