MESON Chess Problem Database

Problem Display
PID: 233901 (8/3r2Bn/2Npk1P1/3Np3/3R1R2/4KP2/4Q3/8 w - - 0 1)

Hannemann, Knud Harald

Skakbladet, 1924

8/3r2Bn/2Npk1P1/3Np3/3R1R2/4KP2/4Q3/8

#2

9 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Rf6#
    • 1...Sf6
      • 2.Rxf6#
    • 1...Sf8
      • 2.Rf6#
    • 1...exd4+
      • 2.Kxd4#
    • 1...exf4+
      • 2.Kxf4#
  • Keys
    • 1.Qb5!
      • 1...exd4+
        • 2.Sxd4#
      • 1...exf4+
        • 2.Sxf4#
      • 1...Rxg7
        • 2.Sd8#
      • 1...Ra7
        • 2.Sd8#
      • 1...Rb7
        • 2.Sd8#
      • 1...Rc7
        • 2.Sd8#
      • 1...Re7
        • 2.Sd8#
      • 1...Rf7
        • 2.Sd8#
      • 1...Rd8
        • 2.Sxd8#
      • 1...Sg5
        • 2.Rf6#
      • 1...Sf6
        • 2.Rxf6#
      • 1...Sf8
        • 2.Rf6#
      • 1...e4
        • 2.Rdxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::R1(E)
    • S(e);N_GUARD::R1(E),XS(e)
    • P(a);CHECK,XR(D)::QAR(A)+K(B),XP(a)
    • P(a);CHECK,XR(E)::QAR(A)+K(B),XP(a)
  • Actual
    • Q(A);
    • Vars
      • P(a);CHECK,XR(D)::S(G),XP(a)
      • P(a);CHECK,XR(E)::S(F),XP(a)
      • R(d);N_GUARD,XB(I)::S(G)
      • R(d);N_GUARD::S(G)
      • R(d);N_GUARD::S(G),XR(d)
      • S(e);N_GUARD::R1(E)
      • S(e);N_GUARD::R1(E),XS(e)
      • P(a);OGATEB::R(D),XP(a)
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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).