MESON Chess Problem Database

Problem Display
PID: 257283 (8/nNn2pQ1/1q6/1r1p1k2/R6b/1B2p3/4N1P1/7K w - - 0 1)

Obert, Karl

Wiener Schachzeitung, 1888

8/nNn2pQ1/1q6/1r1p1k2/R6b/1B2p3/4N1P1/7K

#2

7 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Rf4#
      • 2.g4#
    • 1...Se6
      • 2.Bc2#
      • 2.g4#
  • Keys
    • 1.Re4!
      • threat
        • 2.Re5#
      • 1...Kxe4
        • 2.Bc2#
      • 1...dxe4
        • 2.g4#
      • 1...Qg6
        • 2.Qe5#
      • 1...Qd4
        • 2.Sd6#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Qe6
        • 2.Rf4#
      • 1...Qf6
        • 2.Qg4#
      • 1...Bg3
        • 2.Sxg3#
      • 1...Bg5
        • 2.Sg3#
      • 1...Bf6
        • 2.Sg3#
        • 2.Qg4#
      • 1...Sc6
        • 2.Sd6#
      • 1...d4
        • 2.Rf4#
      • 1...f6
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(E)::B(D)
      • P(d);SBLOCK,XR(E)::P(C)
      • Q(f);SBLOCK::QAR1(G)
      • Q(f);N_GUARD::S(F)
      • Q(f);N_GUARD::S(F),XQ(f)
      • Q(f);SBLOCK::R1(E)
      • Q(f);SBLOCK::QAB1(G)
      • B(b);N_GUARD::S(B),XB(b)
      • B(b);N_GUARD::S(B)
      • S(g);S_CUTQ(f)::S(F)
      • P(d);::R1(E)
      • P(i);SBLOCK::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).