MESON Chess Problem Database

Problem Display
PID: 181883 (5K2/2p5/Q3N3/3k4/5B2/6n1/b1B5/8 w - - 0 1)

Wurzburg, Otto

St. John Globe, 1905

5K2/2p5/Q3N3/3k4/5B2/6n1/b1B5/8

#2

5 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...c6
      • 2.Qxa2#
  • Tries
    • 1.Qb5+?
      • 1...Kxe6
        • 2.Qc6#
      • 1...c5!
    • 1.Qd6+?
      • 1...Kc4
        • 2.Qc5#
      • 1...cxd6!
    • 1.Qa8+?
      • 1...Kxe6
        • 2.Qc6#
      • 1...c6
        • 2.Qxa2#
      • 1...Kc4!
  • Keys
    • 1.Qa4!
      • 1...Kxe6
        • 2.Qc6#
      • 1...Bb3
        • 2.Bxb3#
      • 1...Bb1
        • 2.Bb3#
      • 1...Bc4
        • 2.Qd7#
      • 1...Sf1
        • 2.Qe4#
      • 1...Sh1
        • 2.Qe4#
      • 1...Se2
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sf5
        • 2.Qe4#
      • 1...Sh5
        • 2.Qe4#
      • 1...c5
        • 2.Sc7#
      • 1...c6
        • 2.Qxa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAB(C),XB(a)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(D)::QAR2(C)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(C)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(D)::QAR2(C)
        • P(d);P_SPINP(d),SBLOCK::QAB(C),XB(a)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(c);S_FLIGHT,XS(D)::QAR2(C)
      • B(a);N_GUARD::B(A),XB(a)
      • B(a);N_GUARD::B(A)
      • B(a);SBLOCK::QAR2(C)
      • S(b);N_GUARD::QAB1(C)
      • S(b);N_GUARD::QAB1(C),XS(b)
      • P(d);SBLOCK::S(D)
      • P(d);SBLOCK::QAB(C),XB(a)
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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).