MESON Chess Problem Database

Problem Display
PID: 70699 (n2b4/1bnQ4/1p3pR1/1PkppRN1/p4Pp1/P1PPKpP1/3P1B2/8 w - - 0 1)

Oudot, Jean

L'Echiquier de France, 1957

n2b4/1bnQ4/1p3pR1/1PkppRN1/p4Pp1/P1PPKpP1/3P1B2/8

#2

13 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qc6#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Bc8
      • 2.Qc6#
    • 1...Sxb5
      • 2.Se6#
    • 1...Sa6
      • 2.Se6#
    • 1...Se6
      • 2.Sxe6#
    • 1...Se8
      • 2.Se6#
    • 1...d4+
      • 2.cxd4#
    • 1...exf4+
      • 2.Kxf4#
    • 1...e4
      • 2.Sxe4#
  • Keys
    • 1.c4!
      • 1...d4+
        • 2.Qxd4#
      • 1...exf4+
        • 2.Kxf4#
      • 1...Sxb5
        • 2.Se6#
      • 1...dxc4
        • 2.d4#
      • 1...fxg5
        • 2.Qd6#
      • 1...Be7
        • 2.Qxe7#
      • 1...Ba6
        • 2.Qc6#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bc8
        • 2.Qc6#
      • 1...Sa6
        • 2.Se6#
      • 1...Se6
        • 2.Sxe6#
      • 1...Se8
        • 2.Se6#
      • 1...e4
        • 2.Sxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(i);N_GUARD::QAR1(M)
    • B(i);N_GUARD::QAR1(M),XB(i)
    • S(j);N_GUARD,XP(I)::S(K)
    • S(j);N_GUARD::S(K)
    • S(j);N_GUARD::S(K),XS(j)
    • P(e);CHECK,OGATE,P_SPINP(f)::P(D),XP(e)
    • P(f);CHECK,P_SPINP(e),XP(H)::B(B)+K(F),XP(f)
    • P(f);P_SPINP(e)::S(K),XP(f)
  • Actual
    • P(D);
    • Vars
      • P(e);CHECK,OGATE,P_SPINP(f)::QAB1(M),XP(e)
      • P(f);CHECK,P_SPINP(e),XP(H)::B(B)+K(F),XP(f)
      • S(j);N_GUARD,XP(I)::S(K)
      • P(e);P_SPINP(f),SBLOCK,XP(D)::P(E)
      • P(h);XS(K)::QAB1(M)
      • B(l);N_GUARD::QAB(M),XB(l)
      • B(i);N_GUARD::QAR1(M)
      • B(i);N_GUARD::QAR1(M),XB(i)
      • S(j);N_GUARD::S(K)
      • S(j);N_GUARD::S(K),XS(j)
      • P(f);P_SPINP(e)::S(K),XP(f)
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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).