MESON Chess Problem Database

Problem Display
PID: 215842 (4QB2/8/2p5/3kpb2/8/2K5/2nN2Nb/8 w - - 0 1)

Uhler, Ekkehard

Badische Neueste Nachrichten, 1982

4QB2/8/2p5/3kpb2/8/2K5/2nN2Nb/8

#2

5 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Qd7#
      • 2.Qf7#
    • 1...Be4
      • 2.Qd7#
      • 2.Qf7#
    • 1...Bg6
      • 2.Qd7#
    • 1...Bd7
      • 2.Qxd7#
    • 1...Bh7
      • 2.Qd7#
      • 2.Qf7#
    • 1...Sa1
      • 2.Se3#
    • 1...Se1
      • 2.Se3#
    • 1...Sa3
      • 2.Se3#
    • 1...Se3
      • 2.Sxe3#
    • 1...Sb4
      • 2.Se3#
    • 1...Sd4
      • 2.Se3#
  • Tries
    • 1.Qd8+?
      • 1...Bd7
        • 2.Qxd7#
      • 1...Ke6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Qxc6#
      • 1...Bxe4
        • 2.Qd7#
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • B(e);N_GUARD::QAR2(D)
    • B(e);N_GUARD::QAR2(D),XB(e)
    • S(a);N_GUARD::S(B)
    • S(a);N_GUARD::S(B),XS(a)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • B(e);N_GUARD,P_SPINB(e)::QAR2(D),XB(e)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • K(c);P_SPINP(d),S_FLIGHT,XS(A)::QAB(D),XP(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).