MESON Chess Problem Database

Problem Display
PID: 82226 (2N2qbb/4Q2r/1R1p2pP/N1k1BP2/7p/1n6/6B1/7K w - - 0 1)

Ahues, Herbert Siegfried Oskar

5th Prize, Myllyniemi-50 JT, 1980

2N2qbb/4Q2r/1R1p2pP/N1k1BP2/7p/1n6/6B1/7K

#2

9 + 9

117 Suomen Shakki 1981
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh6
      • 2.Qxd6#
    • 1...Qg7
      • 2.Qxd6#
    • 1...Qxf5
      • 2.Qxd6#
    • 1...Qf7
      • 2.Qxd6#
    • 1...Qxc8
      • 2.Qxd6#
    • 1...Qe8
      • 2.Qxd6#
    • 1...Rxh6
      • 2.Qc7#
    • 1...Bc4
      • 2.Sb7#
    • 1...Bf7
      • 2.Qc7#
    • 1...Bg7
      • 2.Qc7#
    • 1...Sd4
      • 2.Bxd6#
  • Keys
    • 1.Qxh4!
      • threat
        • 2.Qb4#
      • 1...Qxh6
        • 2.Bxd6#
      • 1...Rxh6
        • 2.Sb7#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Sd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(g);N_GUARD,XP(G)::QAB1(H),XP(d)
    • Q(g);N_GUARD::QAB1(H),XP(d)
    • Q(g);N_GUARD,XP(E)::QAB1(H),XP(d)
    • Q(g);N_GUARD,XS(I)::QAB1(H),XP(d)
    • R(f);N_GUARD,XP(G)::QAR2(H)
    • B(h);SBLOCK::S(C)
    • B(h);S_CUTR(f)::QAR2(H)
    • B(i);S_CUTR(f)::QAR2(H)
    • S(a);SBLOCK::B(D),XP(d)
  • Actual
    • Q(H);N_PINP(d),XP(b)
    • Threat
      • QAB1(H)
    • Vars
      • Q(g);N_GUARD,P_PINQ(H),XP(G)::B(D),XP(d)
      • R(f);N_GUARD,P_PINQ(H),XP(G)::S(C)
      • B(h);N_GUARD::QAR1(H),XB(h)
      • S(a);N_GUARD::QAB1(H),XS(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).