MESON Chess Problem Database

Problem Display
PID: 266809 (4q3/B7/1b2npN1/1r1p4/Npr5/3k1p2/2p5/Q1K1R3 w - - 0 1)

Castellari, Umberto

La Scacchiera, 1951

4q3/B7/1b2npN1/1r1p4/Npr5/3k1p2/2p5/Q1K1R3

#2

6 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be3+
      • 2.Rxe3#
    • 1...Ba5
      • 2.Re3#
    • 1...Bc7
      • 2.Re3#
    • 1...Bd8
      • 2.Re3#
    • 1...Sd4
      • 2.Sf4#
    • 1...f5
      • 2.Se5#
  • Keys
    • 1.Qxf6!
      • threat
        • 2.Sb2#
      • 1...Be3+
        • 2.Rxe3#
      • 1...Rd4
        • 2.Se5#
      • 1...Bd4
        • 2.Qf5#
      • 1...Sd4
        • 2.Sf4#
      • 1...d4
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(h);CHECK,N_GUARD::R1(C),XB(h)
    • B(h);N_GUARD::R1(C)
    • S(i);N_GUARD,S_CUTR(e)::S(E)
    • P(j);N_GUARD::S(E)
  • Actual
    • Q(A);XP(j)
    • Threat
      • S(D)
    • Vars
      • B(h);CHECK,N_GUARD::R1(C),XB(h)
      • R(e);SBLOCK::S(E)
      • B(h);S_CUTR(e)::QAB(A)
      • S(i);N_GUARD,S_CUTR(e)::S(E)
      • P(g);SBLOCK,S_CUTB(h)::QAR2(A),XP(c)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).