MESON Chess Problem Database

Problem Display
PID: 233191 (8/5BQp/3p1K1p/8/1Bnkpp1R/3p4/2P1p1N1/2q1N3 w - - 0 1)

Kunzelmann, Jens

Freie Presse, 1983

8/5BQp/3p1K1p/8/1Bnkpp1R/3p4/2P1p1N1/2q1N3

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.c3#
    • 1...Qb1
      • 2.c3#
    • 1...Qd1
      • 2.c3#
    • 1...Sb2
      • 2.Kf5#
      • 2.Ke7#
    • 1...Sd2
      • 2.Kf5#
      • 2.Ke7#
    • 1...Sa3
      • 2.Kf5#
      • 2.Ke7#
    • 1...Se3
      • 2.Ke7#
    • 1...Sa5
      • 2.Kf5#
      • 2.Ke7#
    • 1...Sb6
      • 2.Kf5#
      • 2.Ke7#
    • 1...e3
      • 2.Rxf4#
    • 1...f3
      • 2.Sxf3#
  • Keys
    • 1.Se3!
      • threat
        • 2.Sf5#
      • 1...Kxe3
        • 2.Qg1#
      • 1...Qxe3
        • 2.c3#
      • 1...Sxe3
        • 2.Ke7#
      • 1...fxe3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::P(B)
    • S(d);N_GUARD::QAB(H)+K(F)
    • P(f);OGATEB,P_SPINP(g)::R(E),XP(g)
    • P(g);P_SPINP(f)::S(A),XP(g)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(C)::QAB(H)
      • Q(a);N_GUARD,SBLOCK,XS(C)::P(B)
      • S(d);N_GUARD,SBLOCK,XS(C)::QAB(H)+K(F)
      • P(g);P_SPINP(f),SBLOCK,XS(C)::S(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).