MESON Chess Problem Database

Problem Display
PID: 174188 (4Q3/8/5p2/5kB1/2P1R2b/6p1/6p1/6K1 w - - 0 1)

Buchner, Richard

Hamburger Echo, 1928

4Q3/8/5p2/5kB1/2P1R2b/6p1/6p1/6K1

#2

5 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...fxg5
      • 2.Qe6#
  • Tries
    • 1.Rxh4?
      • 1...Kxg5
        • 2.Qh5#
      • 1...fxg5!
    • 1.Qb5+?
      • 1...Kxe4
        • 2.Qd5#
      • 1...Kg6!
    • 1.Qf7?
      • 1...Kxe4
        • 2.Qd5#
      • 1...Bxg5
        • 2.Qh7#
      • 1...Kxg5!
  • Keys
    • 1.Qg8!
      • 1...Kxe4
        • 2.Qd5#
      • 1...Bxg5
        • 2.Qh7#
      • 1...fxg5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK,XB(D)::QAB1(E)
  • Tries
    • Try
      • R(C);XB(c)
      • Vars
        • K(d);OGATEB,P-FLIGHT,XB(D)::QAR1(E)
      • Refutation
        • P(e);XB(D)
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);S_FLIGHT,XR(C)::QAB1(E)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(E);P_PINP(e)
      • Vars
        • K(d);N_SPINP(e),S_FLIGHT,XR(C)::QAB1(E)
        • B(c);SBLOCK,XB(D)::QAB(E)
      • Refutation
        • K(d);N_SPINP(e),P-FLIGHT,XB(D)
  • Actual
    • Q(E);
    • Vars
      • K(d);S_FLIGHT,XR(C)::QAB1(E)
      • B(c);SBLOCK,XB(D)::QAB(E)
      • P(e);SBLOCK,XB(D)::QAB1(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).