MESON Chess Problem Database

Problem Display
PID: 73017 (n3b3/2ppk1K1/1pP1N3/1P3P2/8/8/7Q/8 w - - 0 1)

Coppens, JP

Tijdschrift vd KNSB, 1936

n3b3/2ppk1K1/1pP1N3/1P3P2/8/8/7Q/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Qh4#
  • Tries
    • 1.Qxc7?
      • 1...Bh5
        • 2.Qxd7#
      • 1...Bg6
        • 2.Qxd7#
      • 1...Bf7
        • 2.Qxd7#
      • 1...Sxc7!
  • Keys
    • 1.Qd2!
      • 1...dxc6
        • 2.Qd8#
      • 1...dxe6
        • 2.f6#
      • 1...Bh5
        • 2.Qxd7#
      • 1...Bg6
        • 2.Qxd7#
      • 1...Bf7
        • 2.Qxd7#
      • 1...d5
        • 2.Qb4#
      • 1...d6
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);P_PINP(c),XP(b)
      • Vars
        • B(f);N_GUARD::QAR1(A),XP(c)
      • Refutation
        • S(e);N_SPINP(c),XQ(A)
  • Actual
    • Q(A);
    • Vars
      • P(c);OGATE,XP(D)::QAB1(A)
      • P(c);SBLOCK,XS(E)::P(C)
      • B(f);N_GUARD::QAR1(A),XP(c)
      • P(c);N_GUARD::QAB(A)
      • P(c);SBLOCK::QAB(A)
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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).