MESON Chess Problem Database

Problem Display
PID: 72507 (8/R4B2/2k5/Ppr2NNK/1n1p3p/2Rp1n2/2q3Qp/5rb1 w - - 0 1)

Beunk, HJ

Tijdschrift vd NSB, 1931

8/R4B2/2k5/Ppr2NNK/1n1p3p/2Rp1n2/2q3Qp/5rb1

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Be8#
  • Tries
    • 1.Qxf3+?
      • 1...Sd5
        • 2.Bxd5#
        • 2.Be8#
        • 2.Qxd5#
      • 1...Rxf3!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qg6#
      • 1...Qxg2
        • 2.Rxc5#
      • 1...Qb3
        • 2.Rxc5#
      • 1...Qa2
        • 2.Rxc5#
      • 1...Se5
        • 2.Se7#
      • 1...Sg5
        • 2.Se7#
      • 1...Sd5
        • 2.Be8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(g);N_SPINS(f),SBLOCK::B(H)
  • Tries
    • Try
      • Q(A);CHECK,XS(f)
      • Refutation
        • R(a);XQ(A)
  • Actual
    • S(E);N_PINS(f),P_SPINS(D)
    • Threat
      • QAR(A)
    • Vars
      • Q(c);N_GUARD,XQ(A)::R1(B),XR(k)
      • Q(c);N_GUARD::R1(B),XR(k)
      • S(f);N_PINS(D)::S(D)
      • S(g);N_PINS(D),SBLOCK::B(H)
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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).