MESON Chess Problem Database

Problem Display
PID: 53452 (6K1/1p6/Q4p2/3N4/B1b1p1Nb/2Pk2qR/1rR5/4B3 w - - 0 1)

Fontaine, Leon

The Hindu, 1937

6K1/1p6/Q4p2/3N4/B1b1p1Nb/2Pk2qR/1rR5/4B3

#2

9 + 8

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1949

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Rxe3#
    • 1...Rb1
      • 2.Rd2#
    • 1...Rb3
      • 2.Rd2#
    • 1...Rb4
      • 2.Rd2#
    • 1...Rb5
      • 2.Rd2#
    • 1...Rb6
      • 2.Rd2#
    • 1...Bg5
      • 2.Sf2#
  • Tries
    • 1.Rxg3+?
      • 1...e3
        • 2.Sf2#
        • 2.Rxe3#
      • 1...Bxg3!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Sf4#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Rb3
        • 2.Rd2#
      • 1...Bb3
        • 2.Sb4#
      • 1...Bg5
        • 2.Sf2#
      • 1...e3
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_PINS(F),OGATE,P_PINS(G)::R1(D),XQ(c)
    • R(a);N_GUARD::R1(B)
    • R(a);N_GUARD,N_SPINB(d)::R1(B)
    • B(f);N_PINS(F),P_PINS(G)::S(F)
  • Tries
    • Try
      • R(D);CHECK,N_SPINS(F),P_SPINS(G),XQ(c)
      • Refutation
        • B(f);XR(D)
  • Actual
    • Q(H);N_PINB(d)
    • Threat
      • S(G)
    • Vars
      • B(d);OGATE,P_PINQ(H),XS(G)::QAR2(H),XB(d)
      • R(a);N_GUARD::R1(B)
      • B(d);S_CUTR(a)::S(G)
      • B(f);N_PINS(F)::S(F)
      • P(e);N_SPINQ(c),OGATEB::QAB(H)
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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).