MESON Chess Problem Database

Problem Display
PID: 263582 (q5r1/3NnR2/p7/Q2N4/2pPk3/R3B3/K1P4b/8 w - - 0 1)

Brogi, Giuseppe

L'Italia Scacchistica, 1948

q5r1/3NnR2/p7/Q2N4/2pPk3/R3B3/K1P4b/8

#2

9 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.Rf4#
    • 1...Bg1
      • 2.Rf4#
    • 1...Bf4
      • 2.Rxf4#
    • 1...Sxd5
      • 2.Sc5#
  • Tries
    • 1.Bg1?
      • threat
        • 2.Sc3#
      • 1...Qxd5
        • 2.Qe1#
      • 1...Bxg1
        • 2.Rf4#
      • 1...Sxd5
        • 2.Sc5#
      • 1...Rg3
        • 2.Rf4#
      • 1...Bf4
        • 2.S5f6#
        • 2.Rxf4#
      • 1...Sf5
        • 2.S7f6#
      • 1...c3
        • 2.Sxc3#
      • 1...Rxg1!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Sc3#
      • 1...Qxd5
        • 2.Qe1#
      • 1...Sxd5
        • 2.Sc5#
      • 1...Rg3
        • 2.Rf4#
      • 1...Bf4
        • 2.S5f6#
        • 2.Rxf4#
      • 1...Sf5
        • 2.S7f6#
      • 1...c3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(g);S_CUTB(a)::R1(I)
    • B(a);N_GUARD::R1(I)
    • B(a);N_GUARD::R1(I),XB(a)
    • S(e);SBLOCK,XS(G)::S(H)
  • Tries
    • Try
      • B(D);
      • Threat
        • S(G)
      • Vars
        • Q(f);SBLOCK,XS(G)::QAR(F)
        • B(a);N_GUARD,XB(D)::R1(I)
        • S(e);SBLOCK,XS(G)::S(H)
        • R(g);S_CUTB(a)::R1(I)
        • S(e);SBLOCK::S(H)
        • P(b);::S(G),XP(b)
      • Refutation
        • R(g);XB(D)
  • Actual
    • B(D);
    • Threat
      • S(G)
    • Vars
      • Q(f);SBLOCK,XS(G)::QAR(F)
      • S(e);SBLOCK,XS(G)::S(H)
      • R(g);S_CUTB(a)::R1(I)
      • S(e);SBLOCK::S(H)
      • P(b);::S(G),XP(b)
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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).