MESON Chess Problem Database

Problem Display
PID: 6701 (1Q2NR2/1B6/r3P3/1P1NP3/p3k1P1/3p2q1/KB3pnn/8 w - - 0 1)

Rasch Nielsen, Poul Anker

1st HM., Weenink MT, 1932

1Q2NR2/1B6/r3P3/1P1NP3/p3k1P1/3p2q1/KB3pnn/8

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Qxe5#
    • 1...Qe3
      • 2.Sb6#
    • 1...Ra5
      • 2.Sd6#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Ra7
      • 2.Sd6#
    • 1...Ra8
      • 2.Sd6#
    • 1...Sf3
      • 2.Sef6#
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qd4#
      • 1...Qxe5
        • 2.Sc3#
      • 1...Rxa7
        • 2.Sd6#
      • 1...Qf4
        • 2.Sdf6#
      • 1...Sf4
        • 2.Sdf6#
      • 1...Qe3
        • 2.Sb6#
      • 1...Rb6
        • 2.Qxa4#
      • 1...Sf3
        • 2.Sef6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(e);OGATE,XP(F)::QAR1(I),XQ(e)
    • Q(e);SBLOCK::B(H)+S(E)
    • R(h);N_GUARD::S(J)
    • R(h);N_GUARD::S(J),XR(h)
    • S(c);SBLOCK::S(J)
  • Actual
    • Q(I);
    • Threat
      • QAR1(I)
    • Vars
      • Q(e);SBLOCK,XP(F)::B(H)+S(E),DCHECK
      • R(h);N_GUARD,XQ(I)::S(J)
      • Q(e);SBLOCK::B(H)+S(E),DCHECK
      • S(b);SBLOCK::B(H)+S(E),DCHECK
      • Q(e);SBLOCK::B(H)+S(E)
      • R(h);OGATE::QAR(I),XP(f)
      • S(c);SBLOCK::S(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).