MESON Chess Problem Database

Problem Display
PID: 176029 (6Nb/R6q/4N1r1/R4P2/4k1p1/4p3/K1n1P3/nQ6 w - - 0 1)

Becker, Georg Albert

Schach-Echo, 1936

6Nb/R6q/4N1r1/R4P2/4k1p1/4p3/K1n1P3/nQ6

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg8
      • 2.Qh1#
      • 2.Qb7#
    • 1...Qh1
      • 2.Qxh1#
      • 2.Qb7#
    • 1...Qh2
      • 2.Qb7#
    • 1...Qh3
      • 2.Qb7#
    • 1...Qh4
      • 2.Qb7#
    • 1...Qh5
      • 2.Qb7#
    • 1...Qh6
      • 2.Qb7#
    • 1...Qxa7
      • 2.Qh1#
    • 1...Qb7
      • 2.Qh1#
      • 2.Qxb7#
    • 1...Qc7
      • 2.Qh1#
    • 1...Qd7
      • 2.Qh1#
    • 1...Qe7
      • 2.Qh1#
    • 1...Qf7
      • 2.Qh1#
    • 1...Qg7
      • 2.Qh1#
    • 1...Rg7
      • 2.Sf6#
    • 1...Bg7
      • 2.Qb7#
    • 1...Sb3
      • 2.Qxc2#
  • Keys
    • 1.Rg7!
      • threat
        • 2.Qb7#
      • 1...Qxg7
        • 2.Qh1#
      • 1...Rxe6
        • 2.Rxg4#
      • 1...Rxg7
        • 2.Sf6#
      • 1...Sb3
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • Q(g);N_GUARD::QAB(A)
    • Q(g);N_GUARD,P_PINR(D),XR(G)::QAB(A)
    • Q(g);N_GUARD,P_PINS(F)::QAB(A)
    • R(f);N_GUARD,S_CUTB(h)::S(H)
    • B(h);S_CUTQ(g)::QAB(A)
    • S(a);N_GUARD::QAB(A),XS(b)
  • Actual
    • R(G);
    • Threat
      • QAB(A)
    • Vars
      • Q(g);N_GUARD,XR(G)::QAB(A)
      • R(f);OGATE,XS(F)::R(G),XP(e)
      • R(f);N_GUARD,XR(G)::S(H)
      • S(a);N_GUARD::QAB(A),XS(b)
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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).