MESON Chess Problem Database

Problem Display
PID: 44330 (n1Nk1n2/K2b3q/QPp2PB1/2NRrpB1/4r3/8/8/8 w - - 0 1)

Easter, Norris

The Problemist, 1929

n1Nk1n2/K2b3q/QPp2PB1/2NRrpB1/4r3/8/8/8

#2

9 + 9

SOLUTION

  • SOUND
  • Keys
    • 1.Sd6!
      • threat
        • 2.Scb7#
      • 1...Be6+
        • 2.f7#
      • 1...Bc8+
        • 2.Sdb7#
      • 1...Be8+
        • 2.Sf7#
      • 1...Sxb6
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(I);N_PINB(e)
    • Threat
      • S(A)
    • Vars
      • B(e);CHECK,S_CUTR(b)::B(C)+P(F)
      • B(e);CHECK,SBLOCK::R(B)+S(I),DCHECK
      • S(g);OGATE,XP(E)::QAB(D),XS(g)
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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).