MESON Chess Problem Database

Problem Display
PID: 268215 (5B2/2pK1p2/2N1P3/p2k1rp1/2p1N3/4qP2/4p3/7Q w - - 0 1)

Masek, Zdenek

Probleemblad, 1985

5B2/2pK1p2/2N1P3/p2k1rp1/2p1N3/4qP2/4p3/7Q

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sc3#
    • 1...Qf2
      • 2.Sc3#
    • 1...Qf4
      • 2.Sc3#
    • 1...Qc5
      • 2.Sc3#
    • 1...Qb6
      • 2.Sc3#
    • 1...Qa7
      • 2.Sc3#
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qxf3
      • 2.Sc3#
    • 1...Qxe4
      • 2.fxe4#
    • 1...Rxf3
      • 2.Sf6#
    • 1...Re5
      • 2.Sf6#
    • 1...Rf6
      • 2.Sxf6#
  • Keys
    • 1.Qa1!
      • threat
        • 2.Se7#
      • 1...Qxf3
        • 2.Qd4#
      • 1...Qxe4
        • 2.Qxa5#
      • 1...Rxf3
        • 2.Qe5#
      • 1...c3
        • 2.Qa2#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qc5
        • 2.Sc3#
      • 1...Qa3
        • 2.Qd4#
      • 1...Qc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::S(C)
    • Q(b);N_GUARD::S(C),XQ(b)
    • Q(b);N_GUARD,XP(B)::S(C)
    • Q(b);OGATE,XS(C)::P(B),XQ(b)
    • R(f);N_GUARD,XP(B)::S(C)
    • R(f);N_GUARD::S(C)
    • R(f);N_GUARD::S(C),XR(f)
  • Actual
    • Q(A);
    • Threat
      • S(D)
    • Vars
      • Q(b);N_GUARD,XP(B)::QAR1(A)
      • Q(b);N_GUARD,XS(C)::QAR(A),XP(d)
      • R(f);N_GUARD,XP(B)::QAR1(A)
      • P(c);OGATEB::QAB(A)
      • Q(b);N_GUARD::QAR1(A),XQ(b)
      • Q(b);N_GUARD::S(C)
      • Q(b);N_GUARD::QAR1(A)
      • Q(b);N_GUARD::S(C),XQ(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).