MESON Chess Problem Database

Problem Display
PID: 15711 (8/3n4/1rp1pr2/Bp1Q1pq1/3N1pP1/1BPk4/3pR2n/1b1K4 w - - 0 1)

Groeneveld, Cornelis

Prins, Hendrik

4th Prize, Hermanson JT, 1987

8/3n4/1rp1pr2/Bp1Q1pq1/3N1pP1/1BPk4/3pR2n/1b1K4

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Bc2#
    • 1...Bc2+
      • 2.Bxc2#
    • 1...Sf3
      • 2.Qxf3#
    • 1...b4
      • 2.Qc4#
    • 1...fxg4
      • 2.Qe4#
    • 1...c5
      • 2.Sxe6#
    • 1...e5
      • 2.Sxc6#
  • Keys
    • 1.Qd6!
      • threat
        • 2.Sc2#
        • 2.Sf3#
        • 2.Sxb5#
        • 2.Sxf5#
        • 2.Sxc6#
        • 2.Sxe6#
      • 1...Bc2+
        • 2.Sxc2#
      • 1...fxg4
        • 2.Sf5#
      • 1...b4
        • 2.Sb5#
      • 1...Sf3
        • 2.Sxf3#
      • 1...f3
        • 2.Sc2#
        • 2.Sxf3#
        • 2.Sxb5#
        • 2.Sxf5#
        • 2.Sxc6#
        • 2.Sxe6#
      • 1...c5
        • 2.Sc6#
      • 1...e5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::B(C)
    • B(a);CHECK,N_GUARD::B(C),XB(a)
    • S(c);N_GUARD::QAR2(H),XS(c)
    • P(f);N_GUARD::QAB1(H)
    • P(g);N_GUARD,XP(F)::QAB1(H)
    • P(j);N_GUARD::QAR(H)+S(E),XP(k)
    • P(k);N_GUARD::QAR(H)+S(E),XP(j)
  • Actual
    • Q(H);
    • Threat
      • DUALS(6)
    • Vars
      • B(a);CHECK::QAR(H)+S(E),XB(a)
      • P(g);XP(F)::QAR(H)+S(E)
      • P(f);::QAR(H)+S(E)
      • S(c);::QAR(H)+S(E),XS(c)
      • P(j);::QAR(H)+S(E)
      • P(k);::QAR(H)+S(E)
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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).