MESON Chess Problem Database

Problem Display
PID: 6940 (4NK1Q/q1b1P3/2R5/1P1k2p1/N3n3/B4np1/3p1pB1/8 w - - 0 1)

Apro, Laszlo

Comm., Bottroper Zeitung, 1935

4NK1Q/q1b1P3/2R5/1P1k2p1/N3n3/B4np1/3p1pB1/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Sxc7#
    • 1...Qd4
      • 2.Sxc7#
    • 1...Qxa4
      • 2.Sxc7#
    • 1...Qa6
      • 2.Sxc7#
    • 1...Se1
      • 2.Sc3#
    • 1...Sg1
      • 2.Sc3#
    • 1...Sh2
      • 2.Sc3#
    • 1...Sd4
      • 2.Sc3#
    • 1...Sh4
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
  • Keys
    • 1.Bb2!
      • threat
        • 2.Qg8#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sc5
        • 2.Qd4#
      • 1...Sd6
        • 2.Qe5#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Qd4
        • 2.Sxc7#
      • 1...Sd4
        • 2.Sc3#
      • 1...Se5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(h);N_GUARD::S(G),XB(i)
    • Q(h);N_GUARD,XS(C)::S(G),XB(i)
    • S(c);P_SPINS(e)::S(C)
    • S(e);N_GUARD,P_SPINS(c)::S(C),XS(e)
  • Actual
    • B(B);
    • Threat
      • QAB(I)
    • Vars
      • S(e);N_GUARD,P_SPINS(c)::S(C),XS(e)
      • S(e);P_SPINS(c),S_CUTQ(h)::QAR1(I)
      • S(e);P_SPINS(c),S_CUTB(i)::QAR1(I)
      • S(e);N_GUARD,P_SPINS(c)::S(G),XS(e)
      • Q(h);N_GUARD::S(G),XB(i)
      • S(c);P_SPINS(e)::S(C)
      • S(c);P_SPINS(e)::S(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).