MESON Chess Problem Database

Problem Display
PID: 244434 (2K1k3/2P1P2R/pp2N3/5Np1/2nb4/B2r1n2/B4R2/2Q5 w - - 0 1)

Eerkes, Allard Pieter

Magyar Sakkvilag, 1935

2K1k3/2P1P2R/pp2N3/5Np1/2nb4/B2r1n2/B4R2/2Q5

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sfe5
      • 2.Sfg7#
    • 1...Sb2
      • 2.Sd6#
      • 2.Qc6#
    • 1...Sd2
      • 2.Sd6#
      • 2.Qc6#
    • 1...Sxa3
      • 2.Sd6#
      • 2.Qc6#
    • 1...Se3
      • 2.Sd6#
      • 2.Qc6#
    • 1...Sa5
      • 2.Sd6#
    • 1...Sce5
      • 2.Sd6#
      • 2.Seg7#
    • 1...Sd6+
      • 2.Sxd6#
  • Tries
    • 1.Qxg5?
      • threat
        • 2.Qh5#
        • 2.Qg6#
        • 2.Qg8#
      • 1...Sd6+
        • 2.Sxd6#
      • 1...Bg7
        • 2.Qh5#
        • 2.Qg6#
      • 1...Sh4
        • 2.Qg8#
      • 1...Sfe5
        • 2.Sfg7#
        • 2.Qg8#
      • 1...Sce5
        • 2.Sd6#
        • 2.Seg7#
        • 2.Qg8#
      • 1...Sxg5!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qh5#
      • 1...Sd6+
        • 2.Sxd6#
      • 1...Sh2
        • 2.Qc6#
      • 1...Sh4
        • 2.Qc6#
      • 1...Sfe5
        • 2.Sfg7#
      • 1...Sce5
        • 2.Sd6#
        • 2.Seg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(b);S_CUTB(d)::S(E)
    • S(c);N_GUARD::S(E)
    • S(c);CHECK,N_GUARD::S(E),XS(c)
  • Tries
    • Try
      • Q(A);XP(e)
      • Threat
        • DUALS(3)
      • Vars
        • S(c);CHECK,N_GUARD::S(E),XS(c)
        • S(b);::QAR2(A)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • S(c);CHECK,N_GUARD::S(E),XS(c)
      • S(b);OGATE::QAB(A)
      • S(b);S_CUTB(d)::S(E)
HTML5 logo

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).