MESON Chess Problem Database

Problem Display
PID: 226679 (7n/6Q1/2B1PP2/2P1krNK/3r1N2/2B3P1/8/4n3 w - - 0 1)

Hermanson, Halvar

Deutsche Schachzeitung, 1976

7n/6Q1/2B1PP2/2P1krNK/3r1N2/2B3P1/8/4n3

#2

10 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg5+
      • 2.Qxg5#
    • 1...Sc2
      • 2.Sd3#
    • 1...Sg2
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sf3
      • 2.Sd3#
    • 1...Sg6
      • 2.Sxg6#
    • 1...Sf7
      • 2.Sg6#
  • Keys
    • 1.Kg4!
      • 1...Rxf4+
        • 2.gxf4#
      • 1...Rxg5+
        • 2.Qxg5#
      • 1...Rxf6
        • 2.Qc7#
      • 1...Sc2
        • 2.Sf3#
      • 1...Sg2
        • 2.Sf3#
      • 1...Sd3
        • 2.Sf3#
      • 1...Sf3
        • 2.Sxf3#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);CHECK,OGATE,XS(E)::QAR2(J),XR(d)
    • S(a);N_GUARD::S(C)
    • S(a);N_GUARD::S(C),XS(a)
    • S(e);N_GUARD::S(C),XS(e)
    • S(e);N_GUARD::S(C)
  • Actual
    • K(F);N_SPINS(E),P_SPINS(C),S_FLIGHT
    • Vars
      • R(d);CHECK,OGATE,XS(C)::P(B),XR(d)
      • R(d);CHECK,OGATE,XS(E)::QAR2(J),XR(d)
      • R(d);SBLOCK,XP(I)::QAB(J)
      • S(a);N_GUARD::S(E)
      • S(a);N_GUARD::S(E),XS(a)
      • S(e);N_GUARD::S(E)
      • S(e);N_GUARD::S(E),XS(e)
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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).