MESON Chess Problem Database

Problem Display
PID: 266328 (8/1Qr5/3p4/3p4/2NP4/1bPk1B2/1K1P4/8 w - - 0 1)

Hasenzahl, Karl

Probleemblad, 1950

8/1Qr5/3p4/3p4/2NP4/1bPk1B2/1K1P4/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Be2#
      • 2.Qa6#
  • Keys
    • 1.Kc1!
      • threat
        • 2.Sb2#
      • 1...Kxc4
        • 2.Be2#
        • 2.Qa6#
      • 1...Rxc4
        • 2.Qh7#
      • 1...Bxc4
        • 2.Qb1#
      • 1...dxc4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • S(E)
    • Vars
      • R(e);OGATE,P_PINP(C),SBLOCK,XS(E)::QAB(G)
      • B(a);OGATE,SBLOCK,XS(E)::QAB(G)
      • P(c);OGATE,SBLOCK,XS(E)::QAB1(G)
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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).