MESON Chess Problem Database

Problem Display
PID: 137292 (1b3R2/6N1/2r1p2N/2B1k3/1R4Pp/1Bn5/2KP1n1r/8 w - - 0 1)

Ellerman, Arnoldo

3rd HM., Magyar Sakkvilag, 1935

1b3R2/6N1/2r1p2N/2B1k3/1R4Pp/1Bn5/2KP1n1r/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sxg4
      • 2.Sxg4#
    • 1...Se4
      • 2.d4#
  • Tries
    • 1.Sh5?
      • threat
        • 2.Sf7#
      • 1...Sxg4
        • 2.Sxg4#
      • 1...Rc7!
    • 1.g5?
      • threat
        • 2.Sf7#
      • 1...Sfe4
        • 2.Sg4#
      • 1...Sce4
        • 2.d4#
      • 1...Rc7!
  • Keys
    • 1.Se8!
      • threat
        • 2.Sf7#
      • 1...Sxg4
        • 2.Sxg4#
      • 1...Rc7
        • 2.Bd6#
      • 1...Sfe4
        • 2.Bd4#
      • 1...Sce4
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);P_PINP(B),XP(E)::S(G),XS(a)
    • S(c);P_PINB(F),SBLOCK::P(B)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(G)
      • Vars
        • S(a);P_PINP(B),XP(E)::S(G),XS(a)
      • Refutation
        • R(f);
    • Try
      • P(E);
      • Threat
        • S(G)
      • Vars
        • S(a);N_GUARD,P_PINP(B)::S(G)
        • S(c);P_PINB(F),SBLOCK::P(B)
      • Refutation
        • R(f);
  • Actual
    • S(H);
    • Threat
      • S(G)
    • Vars
      • S(a);P_PINP(B),XP(E)::S(G),XS(a)
      • R(f);N_GUARD,S_CUTB(h)::B(F)
      • S(a);P_PINP(B),SBLOCK::B(F)
      • S(c);P_PINB(F),SBLOCK::P(B)
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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).