MESON Chess Problem Database

Problem Display
PID: 139665 (Rqkn4/R2b4/P2p3r/1P1p1NB1/5nKp/6b1/2B5/2Q1r3 w - - 0 1)

Neumann, Itzhak

The Problemist, 1937

Rqkn4/R2b4/P2p3r/1P1p1NB1/5nKp/6b1/2B5/2Q1r3

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf5+
      • 2.Bxf5#
    • 1...Sfe6
      • 2.Se7#
    • 1...Sde6
      • 2.Sxd6#
  • Keys
    • 1.b6!
      • threat
        • 2.Rc7#
      • 1...Bxf5+
        • 2.Bxf5#
      • 1...Qxa8
        • 2.Rxa8#
      • 1...Sfe6
        • 2.Se7#
      • 1...Sde6
        • 2.Sxd6#
      • 1...Sb7
        • 2.axb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(h);CHECK,OGATE,XS(E)::QAR(A)+B(B),DCHECK,XB(h)
    • S(c);N_PINS(E)::S(E)
    • S(k);N_PINS(E)::S(E),XP(f)
  • Actual
    • P(D);
    • Threat
      • R1(H)
    • Vars
      • B(h);CHECK,OGATE,XS(E)::QAR(A)+B(B),DCHECK,XB(h)
      • Q(i);N_SPINQ(i),OGATE,XR(I)::R(H),XQ(i)
      • S(c);N_PINS(E)::S(E)
      • S(k);N_PINS(E)::S(E),XP(f)
      • S(k);OGATE::P(G),XS(k)
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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).