MESON Chess Problem Database

Problem Display
PID: 265944 (3R2b1/1NkPp3/Kp4r1/1P4pQ/8/2N5/8/8 w - - 0 1)

Castellari, Umberto

El Ajedrez Espanol, 1952

3R2b1/1NkPp3/Kp4r1/1P4pQ/8/2N5/8/8

#2

7 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Sd5#
    • 1...Bd5
      • 2.Sxd5#
    • 1...Be6
      • 2.Qh2#
    • 1...Bh7
      • 2.Sd5#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Rc8#
      • 1...Bd5
        • 2.Sxd5#
      • 1...Rd6!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Rc8#
      • 1...Re6
        • 2.Sd5#
      • 1...Be6
        • 2.Qg3#
      • 1...e6
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(c);S_CUTB(f)::S(A)
    • B(f);N_GUARD::S(A),XB(f)
    • B(f);S_CUTP(e),S_CUTR(c)::QAB(C)
    • B(f);N_GUARD::S(A)
  • Tries
    • Try
      • Q(C);
      • Threat
        • R1(G)
      • Vars
        • B(f);N_GUARD::S(A),XB(f)
      • Refutation
        • R(c);
  • Actual
    • Q(C);
    • Threat
      • R1(G)
    • Vars
      • R(c);S_CUTB(f)::S(A)
      • B(f);S_CUTP(e),S_CUTR(c)::QAB(C)
      • P(e);S_CUTB(f),S_CUTR(c)::QAR(C)
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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).