MESON Chess Problem Database

Problem Display
PID: 266397 (Q6B/6q1/3pPR2/2nNkP2/3p4/3Pb3/2K1NP2/7B w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schweizerische Schachzeitung, 2019

Q6B/6q1/3pPR2/2nNkP2/3p4/3Pb3/2K1NP2/7B

#2

11 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qf8
      • 2.Rxf8#
    • 1...Qa7
      • 2.Rf7#
    • 1...Qb7
      • 2.Rf7#
    • 1...Qc7
      • 2.Rf7#
    • 1...Qd7
      • 2.Rf7#
    • 1...Qf7
      • 2.Rxf7#
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Sf3#
        • 2.Sc6#
      • 1...Kxd4
        • 2.Qa1#
      • 1...Qxf6
        • 2.Bxf6#
      • 1...Bxd4
        • 2.f4#
      • 1...Sxd3
        • 2.Sc6#
      • 1...Qg2
        • 2.Rg6#
      • 1...Qg3
        • 2.Sc6#
        • 2.Rg6#
      • 1...Qg4
        • 2.Sc6#
        • 2.Rg6#
      • 1...Qb7
        • 2.Rf7#
      • 1...Qc7
        • 2.Sf3#
        • 2.Rf7#
      • 1...Qd7
        • 2.Sf3#
        • 2.Rf7#
      • 1...Se4
        • 2.Sf3#
      • 1...Sb7
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • Q(f);OGATEB::B(K)+R(I),XQ(f)
    • Q(f);OGATEB::B(K)+R(I)
  • Actual
    • S(C);XP(b)
    • Threat
      • DUALS(2)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(C)::QAB(J)
      • Q(f);OGATE,P_SPINQ(f),XR(I)::B(K),XQ(f)
      • B(a);N_GUARD,SBLOCK,XS(C)::P(D)
      • S(c);XP(E)::S(C)
      • Q(f);OGATEB,P_PINP(D)::B(K)+R(I)
      • Q(f);OGATEB::B(K)+R(I)
      • S(c);::S(C)
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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).