MESON Chess Problem Database

Problem Display
PID: 69378 (3Q1N2/3P2p1/3pP1Bb/2Ppk3/2p2R2/2p4P/2K2P2/4N3 w - - 0 1)

van Eelde, Antonie Clarus Johannes

Tijdschrift vd NSB, 1897

3Q1N2/3P2p1/3pP1Bb/2Ppk3/2p2R2/2p4P/2K2P2/4N3

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf4
      • 2.Sf3#
    • 1...Bg5
      • 2.Qxg5#
    • 1...dxc5
      • 2.Qc7#
      • 2.Qb8#
  • Tries
    • 1.Qh4?
      • threat
        • 2.Sf3#
        • 2.Rf5#
      • 1...Bxf4
        • 2.Sf3#
      • 1...d4
        • 2.Rf5#
      • 1...dxc5!
  • Keys
    • 1.Bd3!
      • 1...cxd3+
        • 2.Sxd3#
      • 1...Kxf4
        • 2.Sg6#
      • 1...Bxf4
        • 2.Sf3#
      • 1...dxc5
        • 2.Qc7#
        • 2.Qb8#
      • 1...d4
        • 2.Rf5#
      • 1...Bg5
        • 2.Qxg5#
      • 1...g5
        • 2.Qf6#
      • 1...g6
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK,XR(E)::S(A)
    • B(f);N_GUARD::QAR2(J),XB(f)
  • Tries
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XR(E)::S(A)
        • P(c);::R1(E)
      • Refutation
        • P(e);XP(F)
  • Actual
    • B(H);
    • Vars
      • P(b);CHECK,XB(H)::S(A),XP(b)
      • K(d);S_FLIGHT,XR(E)::S(K)
      • B(f);SBLOCK,XR(E)::S(A)
      • P(c);SBLOCK::R1(E)
      • B(f);N_GUARD::QAR2(J),XB(f)
      • P(g);N_GUARD::QAB1(J)
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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).