MESON Chess Problem Database

Problem Display
PID: 269953 (5Q1B/1p4rp/1K3N1r/RbN1k3/4PR2/4b1Pp/B1Pp4/8 w - - 0 1)

Chicco, Adriano

1st HM., 64 Shakhmatnoe obozrenie 01. TT, 1931

5Q1B/1p4rp/1K3N1r/RbN1k3/4PR2/4b1Pp/B1Pp4/8

#2

11 + 9

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf6+
      • 2.Qxf6#
    • 1...Bd4
      • 2.Rf5#
    • 1...Bxc5+
      • 2.Qxc5#
  • Keys
    • 1.c3!
      • threat
        • 2.Rf5#
      • 1...Rxf6+
        • 2.Qxf6#
      • 1...Bxc5+
        • 2.Qxc5#
      • 1...Bxf4
        • 2.Sd3#
      • 1...Re7
        • 2.Qxe7#
      • 1...Rh5
        • 2.Sg4#
      • 1...Rg5
        • 2.Qe7#
        • 2.Qb8#
      • 1...Bd7
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(f);CHECK,OGATE,XS(I)::QAB1(J),XR(f)
    • B(b);SBLOCK::R1(E)
    • B(b);CHECK,OGATE,P_PINS(I),XS(G)::QAR2(J),XB(b)
  • Actual
    • P(B);
    • Threat
      • R1(E)
    • Vars
      • R(f);CHECK,OGATE,XS(I)::QAB1(J),XR(f)
      • B(b);CHECK,OGATE,P_PINS(I),XS(G)::QAR2(J),XB(b)
      • B(b);N_PINS(G),P_PINS(I),XR(E)::S(G)
      • R(h);N_GUARD::QAR2(J),XR(h)
      • R(f);::S(I)
      • B(d);S_CUTR(h)::QAB(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).