MESON Chess Problem Database

Problem Display
PID: 196900 (3b1B2/Q3N3/3k4/5P2/b4K2/P7/8/8 w - - 0 1)

Schubert, Alfred

Mitteilungsblatt des Deutschen Arbeiter-Schachbundes, 1919

3b1B2/Q3N3/3k4/5P2/b4K2/P7/8/8

#2

6 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bc7
      • 2.Qd4#
  • Tries
    • 1.Sc8+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kc6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Sc8#
      • 1...Kc5
        • 2.Qb4#
      • 1...Bxe7
        • 2.Bxe7#
      • 1...Bc7
        • 2.Qd5#
      • 1...Bc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::QAR2(D)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(D)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(D);
    • Threat
      • B(F)+S(E),DCHECK
    • Vars
      • K(b);S_FLIGHT::QAB1(D)
      • B(c);OGATE,P_SPINB(c),XS(E)::B(F),XB(c)
      • B(c);SBLOCK::QAR1(D)
      • B(a);N_GUARD::QAR1(D),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).