MESON Chess Problem Database

Problem Display
PID: 43517 (B1N5/Q3K3/1ppp2pB/4pkP1/R5Rp/Pb5P/q1prN3/8 w - - 0 1)

Fontaine, Leon

De Problemist, 1930

B1N5/Q3K3/1ppp2pB/4pkP1/R5Rp/Pb5P/q1prN3/8

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Sxd6#
    • 1...Rd5
      • 2.Qd7#
    • 1...Bd5
      • 2.Sxd6#
    • 1...b5
      • 2.Qf2#
    • 1...c5
      • 2.Be4#
    • 1...d5
      • 2.Sd6#
      • 2.Qd7#
  • Keys
    • 1.Ra5!
      • threat
        • 2.Rf4#
      • 1...Rxe2
        • 2.Sxd6#
      • 1...bxa5
        • 2.Qf2#
      • 1...Rd4
        • 2.Sxd4#
      • 1...Rd5
        • 2.Qd7#
      • 1...Bd5
        • 2.Sxd6#
      • 1...b5
        • 2.Qf2#
      • 1...c5
        • 2.Be4#
      • 1...d5
        • 2.Sd6#
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,XS(A)::S(K),XP(j)
    • R(c);S_CUTB(d)::QAB(H)
    • B(d);S_CUTR(c)::S(K),XP(j)
    • P(h);OGATE::QAR(H)
    • P(i);OGATE::B(J)
  • Actual
    • R(D);P_PINP(f)
    • Threat
      • R1(E)
    • Vars
      • R(c);N_GUARD,XS(A)::S(K),XP(j)
      • P(h);N_SPINP(f),OGATE,XR(D)::QAR(H)
      • R(c);N_GUARD::S(A),XR(c)
      • R(c);N_SPINP(f),S_CUTB(d)::QAB(H)
      • B(d);N_SPINP(f),S_CUTR(c)::S(K),XP(j)
      • P(h);N_SPINP(f),OGATE::QAR(H)
      • P(i);N_SPINP(f),OGATE::B(J)
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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).