MESON Chess Problem Database

Problem Display
PID: 184941 (1N5B/b2p3p/3Pk2q/5R2/1PNp3p/4nP1Q/B7/2K1R3 w - - 0 1)

Rappet, Roger

Bulletin Ouvrier des Echecs, 1939

1N5B/b2p3p/3Pk2q/5R2/1PNp3p/4nP1Q/B7/2K1R3

#2

11 + 8

15601 Albrecht-Leiss-Degener Collection 2018
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Keys
    • 1.Be5!
      • threat
        • 2.Sxe3#
      • 1...Sd1+
        • 2.Sd2#
        • 2.Se3#
      • 1...Sf1+
        • 2.Sd2#
        • 2.Se3#
      • 1...Sc2+
        • 2.Sd2#
        • 2.Se3#
      • 1...Sg2+
        • 2.Sd2#
        • 2.Se3#
      • 1...Sxc4+
        • 2.Bf4#
      • 1...Sg4+
        • 2.Se3#
      • 1...Sd5+
        • 2.Rf4#
      • 1...Sxf5+
        • 2.Sd2#
      • 1...Kd5
        • 2.Sxe3#
        • 2.Sb6#

Anticipated by 21187(1917)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Actual
    • B(K);N_PINS(a)
    • Threat
      • B(C)+S(G),XS(a)
    • Vars
      • S(a);CHECK,OGATEB,P_SPINS(a),XS(G)::R(B)+B(K)
      • S(a);CHECK::B(C)+S(G)
      • S(a);CHECK,N_GUARD,SBLOCK::QAB(E)+R(H)
      • S(a);CHECK,N_GUARD,P_SPINS(a),XR(H)::B(C)+S(G)
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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).