MESON Chess Problem Database

Problem Display
PID: 210145 (1B6/P2N4/p1p2p2/Rp1k1P1P/n1qb3K/1Bpp2p1/5Nb1/3Q4 w - - 0 1)

Mehner, Heinrich

Badische Neueste Nachrichten, 1975

1B6/P2N4/p1p2p2/Rp1k1P1P/n1qb3K/1Bpp2p1/5Nb1/3Q4

#2

10 + 12

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb3
      • 2.Qxb3#
    • 1...Bf1
      • 2.Qf3#
    • 1...Bf3
      • 2.Qxf3#
    • 1...Bh3
      • 2.Qf3#
    • 1...Sc5
      • 2.Sb6#
    • 1...c5
      • 2.a8Q#
      • 2.a8B#
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qg8#
      • 1...Bxf2
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...Bxa7
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...gxf2
        • 2.Qxg2#
      • 1...c5
        • 2.a8Q#
        • 2.a8B#
      • 1...Be3
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...Bc5
        • 2.Sxf6#
      • 1...Be5
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...Bb6
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...Sc5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(f);N_SPINQ(f),OGATE,XB(C)::QAB(A),XQ(f)
    • B(a);N_GUARD::QAB(A)
    • B(a);N_GUARD::QAB(A),XB(a)
    • S(e);N_GUARD,N_SPINP(h),SBLOCK,S_CUTB(g)::S(I)
    • P(k);N_SPINP(h)::P=Q
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • P(d);OGATE,XS(B)::QAB(A),XB(a)
      • P(k);N_SPINP(h)::P=Q
      • B(g);N_GUARD,N_SPINP(h),P_PINQ(A),SBLOCK::S(I),XP(l)
      • S(e);N_GUARD,N_SPINP(h),SBLOCK,S_CUTB(g)::S(I)
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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).