MESON Chess Problem Database

Problem Display
PID: 61363 (5rb1/1N5p/7N/1Q1nk1P1/8/1K1PPR1B/pb3p2/q2nR3 w - - 0 1)

Gevers, Raymond

1st Prize=, La Marseillaise, 1917

5rb1/1N5p/7N/1Q1nk1P1/8/1K1PPR1B/pb3p2/q2nR3

#2

10 + 10

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1955
5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Tries
    • 1.Rf4?
      • threat
        • 2.Re4#
      • 1...Sc3
        • 2.d4#
      • 1...Rxf4!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qe4#
      • 1...S5xe3
        • 2.Sg4#
      • 1...Rf4
        • 2.exf4#
      • 1...Bd4
        • 2.exd4#
      • 1...S1c3
        • 2.Qd4#
      • 1...S5c3
        • 2.Sg4#
      • 1...Sb4
        • 2.Sg4#
      • 1...Sf4
        • 2.exf4#
      • 1...Sb6
        • 2.Sg4#
      • 1...Sf6
        • 2.Rf5#
      • 1...Sc7
        • 2.Sg4#
      • 1...Se7
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Threat
        • R1(E)
      • Vars
        • S(b);S_CUTB(d)::P(C)
      • Refutation
        • R(i);XR(E)
  • Actual
    • Q(G);N_PINS(f)
    • Threat
      • QAR1(G)
    • Vars
      • S(f);P_PINQ(G),P_SPINS(f),XP(D)::S(I)
      • R(i);OGATE::R(A)+P(D)DCHECK,XR(i)
      • B(d);OGATE::R(A)+P(D)DCHECK,XB(d)
      • S(b);S_CUTB(d)::QAB1(G)
      • S(f);P_PINQ(G)::S(I)
      • S(f);OGATE,P_PINQ(G)::R(A)+P(D)DCHECK,XS(f)
      • S(f);P_PINQ(G),S_CUTR(i)::R1(E)
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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).