MESON Chess Problem Database

Problem Display
PID: 136924 (1n6/8/2p1K3/2P1p3/Bp2k1n1/3p1bPp/2NP3P/3N1Q2 w - - 0 1)

Artz, MDL

Seilberger, Johann Joseph Petrus Adrianus

Limburgs Dagblad, 1938

1n6/8/2p1K3/2P1p3/Bp2k1n1/3p1bPp/2NP3P/3N1Q2

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd1
      • 2.Qf5#
    • 1...Bh1
      • 2.Qxh1#
      • 2.Qf5#
    • 1...Be2
      • 2.Qf5#
    • 1...Bg2
      • 2.Qf5#
    • 1...Sf2
      • 2.Sxf2#
    • 1...Sxh2
      • 2.Sf2#
    • 1...Se3
      • 2.Sf2#
    • 1...Sf6
      • 2.Sf2#
    • 1...Sh6
      • 2.Sf2#
    • 1...Sa6
      • 2.Bxc6#
    • 1...Sd7
      • 2.Bxc6#
    • 1...dxc2
      • 2.Qc4#
    • 1...b3
      • 2.Sc3#
  • Tries
    • 1.Sb2?
      • threat
        • 2.Qxd3#
      • 1...dxc2
        • 2.Qd3#
        • 2.Qc4#
      • 1...Be2
        • 2.Qf5#
      • 1...Sf2!
    • 1.Bb5?
      • threat
        • 2.Bxd3#
        • 2.Qxd3#
      • 1...dxc2
        • 2.Qd3#
        • 2.Qc4#
      • 1...Be2
        • 2.Qf5#
      • 1...Sf2
        • 2.Sxf2#
      • 1...cxb5!
    • 1.Qe1+?
      • 1...Se3
        • 2.Sf2#
        • 2.Qxe3#
      • 1...Be2!
  • Keys
    • 1.Qf2!
      • 1...Bxd1
        • 2.Qf5#
      • 1...Sxf2
        • 2.Sxf2#
      • 1...Sxh2
        • 2.Qe3#
      • 1...dxc2
        • 2.Bxc2#
      • 1...Be2
        • 2.Qf5#
      • 1...Bh1
        • 2.Qf5#
      • 1...Bg2
        • 2.Qf5#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sf6
        • 2.Qe3#
      • 1...Sh6
        • 2.Qe3#
      • 1...Sa6
        • 2.Bxc6#
      • 1...Sd7
        • 2.Bxc6#
      • 1...b3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(b);OGATE,XS(A)::QAB1(B)
    • B(b);OGATE::QAB1(B)
    • S(f);N_GUARD::S(A),XS(f)
    • S(f);N_GUARD,XP(E)::S(A)
    • S(f);N_GUARD::S(A)
    • S(i);N_GUARD::B(G),XP(h)
    • P(a);OGATE,XS(C)::QAR2(B)
    • P(d);N_GUARD::S(A)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(B),XP(a)
      • Vars
        • B(b);OGATE::QAB1(B)
      • Refutation
        • S(f);
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);OGATE::QAB1(B)
        • S(f);N_GUARD::S(A),XS(f)
      • Refutation
        • P(h);XB(G)
    • Try
      • Q(B);CHECK
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • Q(B);
    • Vars
      • B(b);OGATE,XS(A)::QAB1(B)
      • S(f);XQ(B)::S(A),XS(f)
      • S(f);N_GUARD,XP(E)::QAR1(B)
      • P(a);OGATE,XS(C)::B(G),XP(a)
      • B(b);OGATE::QAB1(B)
      • S(f);N_GUARD::QAR1(B),XS(f)
      • S(f);N_GUARD::QAR1(B)
      • S(i);N_GUARD::B(G),XP(h)
      • P(d);N_GUARD::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).