MESON Chess Problem Database

Problem Display
PID: 61825 (8/8/3npp2/R2bk1p1/1B1p3N/2r1b1P1/4QPBK/4R1N1 w - - 0 1)

Fontaine, Leon

Tidskrift for Schack, 1953

8/8/3npp2/R2bk1p1/1B1p3N/2r1b1P1/4QPBK/4R1N1

#2

10 + 9

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1956

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Sgf3#
    • 1...Sf5
      • 2.Sg6#
    • 1...d3
      • 2.Bxc3#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Sg6#
      • 1...gxh4
        • 2.Qf4#
      • 1...d3
        • 2.Bxc3#
      • 1...f5!
    • 1.Qg4?
      • threat
        • 2.Sgf3#
        • 2.Shf3#
        • 2.Sg6#
      • 1...gxh4
        • 2.Sf3#
        • 2.Qf4#
        • 2.f4#
      • 1...Rc5
        • 2.Sg6#
      • 1...Sb5
        • 2.Sg6#
      • 1...f5!
    • 1.Qxe3+?
      • 1...Se4
        • 2.Sgf3#
        • 2.Qxe4#
      • 1...dxe3
        • 2.Bxc3#
      • 1...Rxe3!
  • Keys
    • 1.Qh5!
      • threat
        • 2.f4#
      • 1...d3
        • 2.Bxc3#
      • 1...f5
        • 2.Qh8#
      • 1...Se4
        • 2.Sgf3#
      • 1...Sf5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(g);N_SPINB(b),P_SPINB(d),SBLOCK::S(B)
    • S(g);SBLOCK::S(I)
    • P(c);OGATEB::B(H),XR(a)
  • Tries
    • Try
      • Q(C);
      • Threat
        • S(I)
      • Vars
        • P(f);N_GUARD,XS(I)::QAB1(C)
        • P(c);OGATEB::B(H),XR(a)
      • Refutation
        • P(i);
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • R(a);::S(I)
        • S(g);::S(I)
      • Refutation
        • P(i);
    • Try
      • Q(C);CHECK,P_PINB(d),XB(b)
      • Vars
        • P(c);P_SPINP(c),S_CUTS(g),XQ(C)::B(H),XR(a)
      • Refutation
        • R(a);P_SPINR(a),XQ(C)
  • Actual
    • Q(C);P_PINP(f)
    • Threat
      • P(D)
    • Vars
      • P(c);OGATEB::B(H),XR(a)
      • P(i);N_SPINP(f),OGATEB::QAB(C)
      • S(g);N_SPINB(b),P_SPINB(d),SBLOCK::S(B)
      • S(g);N_SPINP(f),SBLOCK::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).