MESON Chess Problem Database

Problem Display
PID: 228881 (5b2/6pK/2N4p/4Rn2/2k1B2p/Bp5r/2b1P3/1nRN4 w - - 0 1)

Cristoffanini, Guido

L'Italia Scacchistica, 1926

5b2/6pK/2N4p/4Rn2/2k1B2p/Bp5r/2b1P3/1nRN4

#2

8 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Bd3#
    • 1...Rh2
      • 2.Bd3#
    • 1...Rc3
      • 2.Sb2#
    • 1...Rd3
      • 2.Bxd3#
      • 2.exd3#
    • 1...Bc5
      • 2.Rxc5#
    • 1...Sc3
      • 2.Sb2#
    • 1...Se3
      • 2.Bd3#
    • 1...Sg3
      • 2.Bd3#
    • 1...Sd4
      • 2.Sa5#
    • 1...Sd6
      • 2.Rc5#
    • 1...Se7
      • 2.Rc5#
  • Tries
    • 1.Rxc2+?
      • 1...Rc3
        • 2.Sb2#
        • 2.Bd3#
      • 1...Sc3
        • 2.Sb2#
      • 1...bxc2!
  • Keys
    • 1.Ra5!
      • threat
        • 2.Bd5#
      • 1...Rd3
        • 2.Bxd3#
        • 2.exd3#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Sc3
        • 2.Sb2#
      • 1...Se3
        • 2.Bd3#
      • 1...Sg3
        • 2.Bd3#
      • 1...Sd4
        • 2.Se5#
      • 1...Sd6
        • 2.Rc5#
      • 1...Se7
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(d);N_GUARD::B(E)
    • R(d);N_SPINB(b),SBLOCK::S(B)
    • B(j);N_GUARD::R1(F),XB(j)
    • S(a);N_SPINB(b),SBLOCK::S(B)
    • S(g);P_PINB(E),S_CUTR(d)::B(E)
    • S(g);P_PINB(E),SBLOCK::S(G)
    • S(g);P_PINB(E),S_CUTB(j)::R1(F)
  • Tries
    • Try
      • R(A);CHECK,XB(b)
      • Vars
        • S(a);P_SPINS(a)::S(B)
      • Refutation
        • P(c);XR(A)
  • Actual
    • R(F);
    • Threat
      • B(E)
    • Vars
      • B(j);N_GUARD::R1(F),XB(j)
      • S(a);N_SPINB(b),SBLOCK::S(B)
      • S(g);P_PINB(E),S_CUTR(d)::B(E)
      • S(g);P_PINB(E),SBLOCK::S(G)
      • S(g);P_PINB(E),S_CUTB(j)::R1(F)
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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).