MESON Chess Problem Database

Problem Display
PID: 11405 (2Nq4/2n5/1RB5/K1k1r1NR/2P1b3/1Pn1P3/3P4/4b3 w - - 0 1)

Eerkes, Allard Pieter

1st Prize, Limburgs Dagblad, 1938

2Nq4/2n5/1RB5/K1k1r1NR/2P1b3/1Pn1P3/3P4/4b3

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg5
      • 2.d4#
    • 1...Qf6
      • 2.d4#
    • 1...Qe7
      • 2.d4#
    • 1...Qe8
      • 2.d4#
    • 1...Qf8
      • 2.d4#
    • 1...Qg8
      • 2.d4#
    • 1...Qh8
      • 2.d4#
    • 1...Re6
      • 2.Sxe4#
      • 2.Sxe6#
    • 1...Re7
      • 2.Sxe4#
      • 2.Se6#
    • 1...Re8
      • 2.Sxe4#
      • 2.Se6#
    • 1...Bd5
      • 2.d4#
    • 1...Sb1
      • 2.Sxe4#
    • 1...Sd1
      • 2.Sxe4#
    • 1...Sa2
      • 2.Sxe4#
    • 1...Se2
      • 2.Sxe4#
    • 1...Sa4
      • 2.Sxe4#
    • 1...S3b5
      • 2.Sxe4#
    • 1...S7b5
      • 2.Se6#
    • 1...Sd5
      • 2.d4#
    • 1...Sa6
      • 2.Se6#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sa8
      • 2.Se6#
    • 1...Se8
      • 2.Se6#
  • Keys
    • 1.Bb5!
      • threat
        • 2.b4#
      • 1...S3xb5
        • 2.Sxe4#
      • 1...S7xb5
        • 2.Se6#
      • 1...Sa2
        • 2.Sxe4#
      • 1...S3d5
        • 2.Rc6#
      • 1...S7d5
        • 2.d4#
      • 1...Sa6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 15
  • Sets
    • Q(g);N_GUARD,XS(F)::P(A)
    • Q(g);N_GUARD::P(A)
    • B(c);S_CUTQ(g)::P(A)
    • S(b);N_GUARD,P_PINP(A)::S(F),XB(c)
    • S(f);N_GUARD,P_PINR(H)::S(F)
    • S(f);P_PINR(H),S_CUTQ(g)::P(A)
    • S(f);N_GUARD,P_PINR(H)::S(F),XS(f)
  • Actual
    • B(I);
    • Threat
      • P(B)
    • Vars
      • S(b);N_GUARD,P_PINP(A),XB(I)::S(F),XB(c)
      • S(f);N_GUARD,P_PINR(H),XB(I)::S(F)
      • S(b);N_GUARD,P_PINP(A)::S(F),XB(c)
      • S(b);P_PINP(A),S_CUTB(c)::R1(H)
      • S(f);P_PINR(H),S_CUTQ(g)::P(A)
      • S(f);N_GUARD,P_PINR(H)::S(F)
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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).