MESON Chess Problem Database

Problem Display
PID: 231650 (1K6/8/Q2P2p1/4k1n1/3p2P1/1B4P1/8/8 w - - 0 1)

Kotrc, Jan

Das Kleine Blatt, 1927

1K6/8/Q2P2p1/4k1n1/3p2P1/1B4P1/8/8

#2

6 + 4

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe2#
  • Tries
    • 1.d7?
      • 1...Ke4
        • 2.Qe2#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sf3
        • 2.Qe6#
      • 1...Sh3
        • 2.Qe6#
      • 1...Se4
        • 2.Qe6#
      • 1...Sf7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe6#
      • 1...d3!
  • Keys
    • 1.Qc4!
      • 1...Ke4
        • 2.Qe2#
      • 1...Kxd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qxd4#
      • 1...Sf3
        • 2.Qe6#
      • 1...Sh3
        • 2.Qe6#
      • 1...Se4
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sf7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe6#
      • 1...d3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(D)
  • Tries
    • Try
      • P(E);
      • Vars
        • K(b);P-FLIGHT::QAR2(D)
        • S(c);N_GUARD::QAR1(D),XS(c)
        • S(c);N_GUARD::QAR1(D)
        • S(c);N_GUARD,SBLOCK::QAR1(D)
      • Refutation
        • P(a);
  • Actual
    • Q(D);
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(D)
      • K(b);OGATEB,S_FLIGHT,XP(E)::QAB1(D)
      • K(b);S_FLIGHT::QAB(D),XP(a)
      • S(c);N_GUARD::QAR1(D)
      • S(c);N_GUARD,SBLOCK::QAR1(D)
      • S(c);N_GUARD::QAR1(D),XS(c)
      • P(a);OGATE::QAB1(D)
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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).