MESON Chess Problem Database

Problem Display
PID: 137760 (1B6/3P4/1p3pK1/1QpR2b1/p2P1r2/r1RN1k1P/2bP1p1P/5B2 w - - 0 1)

Ellerman, Arnoldo

Dagens Nyheder, 1932

1B6/3P4/1p3pK1/1QpR2b1/p2P1r2/r1RN1k1P/2bP1p1P/5B2

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Se1#
    • 1...Bb3
      • 2.Sxc5#
    • 1...Bxd3+
      • 2.Qxd3#
  • Keys
    • 1.Qc6!
      • threat
        • 2.Rf5#
      • 1...Ke4
        • 2.Rd6#
      • 1...Re4
        • 2.Se1#
      • 1...Rf5
        • 2.Re5#
        • 2.Rxf5#
      • 1...Bb3
        • 2.Sxc5#
      • 1...f5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(f);N_PINS(E),SBLOCK::R(D)+S(E),DCHECK
    • B(a);N_PINS(E)::R(D)+S(E),XP(g)
    • B(a);CHECK,OGATE,P_SPINB(a),XS(E)::QAR2(H),XB(a)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)+R(I)
    • Vars
      • K(d);N_PINS(E),S_FLIGHT::QAB(H)+R(I)
      • R(f);N_PINS(E),SBLOCK::R(D)+S(E),DCHECK
      • B(a);N_PINS(E)::R(D)+S(E),XP(g)
      • P(j);N_PINS(E)::QAB(H)+R(I),XP(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).