MESON Chess Problem Database

Problem Display
PID: 68275 (4R3/1r1p4/3pP1bn/3NkNpp/1pP5/2P5/5P2/1Q4K1 w - - 0 1)

Braune, Robert

Bohemia, 1907

4R3/1r1p4/3pP1bn/3NkNpp/1pP5/2P5/5P2/1Q4K1

#2

9 + 9

5821 Robert Braune - Apotre de la Symetrie 1914

SOLUTION

  • SOUND
  • Sets
    • 1...Bf7
      • 2.exf7#
    • 1...Bh7
      • 2.exd7#
    • 1...Sf7
      • 2.exd7#
      • 2.exf7#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sf3#
      • 1...Bxb1
        • 2.exd7#
      • 1...Bxe8
        • 2.Qe1#
      • 1...Bc2
        • 2.exd7#
      • 1...Bd3
        • 2.exd7#
      • 1...Be4
        • 2.exd7#
      • 1...g4!
  • Keys
    • 1.Sh4!
      • threat
        • 2.Sf3#
        • 2.Sxg6#
      • 1...Bxb1
        • 2.exd7#
      • 1...Bxe8
        • 2.Qe1#
      • 1...bxc3
        • 2.Sf3#
      • 1...gxh4
        • 2.f4#
      • 1...Bc2
        • 2.exd7#
      • 1...Bd3
        • 2.exd7#
      • 1...Be4
        • 2.exd7#
      • 1...Bf5
        • 2.Sf3#
      • 1...Bf7
        • 2.Sf3#
        • 2.Qe1#
        • 2.exf7#
      • 1...Bh7
        • 2.Sf3#
        • 2.exd7#
      • 1...g4
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • B(f);OGATE::R(I)+P(H),XB(f)
    • B(f);N_GUARD::R(I)+P(H),XP(i)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • B(f);N_GUARD,XQ(A)::R(I)+P(H),XP(i)
        • B(f);N_GUARD,XR(I)::QAR(A)
        • B(f);N_GUARD::R(I)+P(H),XP(i)
      • Refutation
        • P(c);
  • Actual
    • S(G);
    • Threat
      • DUALS(2)
    • Vars
      • B(f);N_GUARD,XQ(A)::R(I)+P(H),XP(i)
      • B(f);N_GUARD,XR(I)::QAR(A)
      • P(a);XP(D)::S(G)
      • P(c);N_GUARD,XS(G)::P(C)
      • B(f);N_GUARD::R(I)+P(H),XP(i)
      • B(f);::S(G)
      • P(c);::S(G),XB(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).