MESON Chess Problem Database

Problem Display
PID: 224264 (8/6N1/7p/8/4pK1k/7p/6pR/4NbR1 w - - 0 1)

Wurzburg, Otto

Nashville Daily American, 1888

8/6N1/7p/8/4pK1k/7p/6pR/4NbR1

#2

5 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be2
      • 2.Sxg2#
    • 1...Bd3
      • 2.Sxg2#
    • 1...Bc4
      • 2.Sxg2#
    • 1...Bb5
      • 2.Sxg2#
    • 1...Ba6
      • 2.Sxg2#
    • 1...e3
      • 2.Sf3#
    • 1...h5
      • 2.Sf5#
  • Tries
    • 1.Rgxg2?
      • threat
        • 2.Rg4#
      • 1...Bxg2
        • 2.Sxg2#
      • 1...h5
        • 2.Sf5#
      • 1...Be2!
  • Keys
    • 1.Rhh1!
      • 1...gxh1Q
        • 2.Rg4#
      • 1...gxh1S
        • 2.Rg4#
      • 1...gxh1B
        • 2.Rg4#
      • 1...gxh1R
        • 2.Rg4#
      • 1...h2
        • 2.Rxh2#
      • 1...Be2
        • 2.Sxg2#
      • 1...Bd3
        • 2.Sxg2#
      • 1...Bc4
        • 2.Sxg2#
      • 1...Bb5
        • 2.Sxg2#
      • 1...Ba6
        • 2.Sxg2#
      • 1...e3
        • 2.Sf3#
      • 1...h5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(A),XP(b)
    • B(a);N_GUARD,SBLOCK::S(A),XP(b)
    • P(d);N_GUARD::S(A)
    • P(f);SBLOCK::S(E)
  • Tries
    • Try
      • R(B);XP(b)
      • Threat
        • R1(B)
      • Vars
        • B(a);XR(B)::S(A),XB(a)
        • P(f);SBLOCK::S(E)
      • Refutation
        • B(a);
  • Actual
    • R(C);
    • Vars
      • P(b);N_SPINP(c),OGATE,XR(C)::R1(B)
      • P(c);OGATEB::R(C),XP(c)
      • B(a);N_GUARD::S(A),XP(b)
      • B(a);N_GUARD,SBLOCK::S(A),XP(b)
      • P(d);N_GUARD::S(A)
      • P(f);SBLOCK::S(E)
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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).