MESON Chess Problem Database

Problem Display
PID: 205738 (2nN4/2K5/4p3/p2kNp2/P2P1R2/2p5/b1B5/3R4 w - - 0 1)

Dietrich, Ernst

Arbeiter Schach Internationale, 1925

2nN4/2K5/4p3/p2kNp2/P2P1R2/2p5/b1B5/3R4

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Bb3#
    • 1...Bb3
      • 2.Bxb3#
  • Tries
    • 1.Sdc6?
      • 1...Bb1
        • 2.Bb3#
      • 1...Bb3
        • 2.Bxb3#
      • 1...Sb6
        • 2.Se7#
      • 1...Sd6
        • 2.Se7#
      • 1...Sa7
        • 2.Se7#
      • 1...Se7
        • 2.Sxe7#
      • 1...Bc4!
    • 1.Bxf5?
      • threat
        • 2.Be4#
        • 2.Bxe6#
      • 1...Bb1
        • 2.Bxe6#
      • 1...Sd6
        • 2.Bxe6#
      • 1...exf5!
  • Keys
    • 1.Sd7!
      • 1...Kc4
        • 2.d5#
      • 1...Bc4
        • 2.Sf6#
      • 1...Bb1
        • 2.Bb3#
      • 1...Bb3
        • 2.Bxb3#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sd6
        • 2.Sb6#
      • 1...Sa7
        • 2.Sb6#
      • 1...Se7
        • 2.Sb6#
      • 1...e5
        • 2.dxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::B(B)
    • B(a);N_GUARD::B(B),XB(a)
  • Tries
    • Try
      • S(H);
      • Vars
        • B(a);N_GUARD::B(B)
        • B(a);N_GUARD::B(B),XB(a)
        • S(g);N_GUARD::S(H)
        • S(g);N_GUARD::S(H),XS(g)
      • Refutation
        • B(a);
    • Try
      • B(B);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::B(B),XP(f)
        • S(g);::B(B),XP(f)
      • Refutation
        • P(f);XB(B)
  • Actual
    • S(F);
    • Vars
      • K(d);OGATE,S_FLIGHT::R(E)+P(D)
      • B(a);SBLOCK::S(F)
      • B(a);N_GUARD::B(B)
      • B(a);N_GUARD::B(B),XB(a)
      • S(g);N_GUARD::S(F),XS(g)
      • S(g);N_GUARD::S(F)
      • P(f);OGATE::R(A)+P(D),XP(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).