MESON Chess Problem Database

Problem Display
PID: 189987 (8/3p1B2/2p3Q1/1nP1kpP1/8/1P2P3/5K2/8 w - - 0 1)

Grabowski, Kazimierz

HM., Die Schachwelt (Berlin), 1913

8/3p1B2/2p3Q1/1nP1kpP1/8/1P2P3/5K2/8

#2

7 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qe6#
    • 1...d6
      • 2.Qe6#
  • Tries
    • 1.Kf3?
      • threat
        • 2.Qf6#
        • 2.Qg7#
      • 1...f4
        • 2.Qe4#
        • 2.Qf6#
      • 1...Sd4+!
  • Keys
    • 1.Bd5!
      • 1...Kxd5
        • 2.Qxf5#
      • 1...cxd5
        • 2.Qe8#
      • 1...Sa3
        • 2.Qd6#
      • 1...Sc3
        • 2.Qd6#
      • 1...Sd4
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...f4
        • 2.Qe4#
      • 1...d6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD::QAR1(F)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • S(a);CHECK
  • Actual
    • B(G);
    • Vars
      • K(b);P-FLIGHT,XB(G)::QAR2(F),XP(c)
      • P(d);SBLOCK,XB(G)::QAR(F)
      • S(a);N_GUARD::QAB1(F)
      • S(a);N_GUARD::QAB1(F),XS(a)
      • P(c);OGATE::QAR1(F)
      • P(e);N_GUARD::QAR1(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).