MESON Chess Problem Database

Problem Display
PID: 264400 (b3BB2/2K5/ppnN4/k1P1N2R/4R3/1pr5/8/2q1Q3 w - - 0 1)

Bottacchi, Antonio

L'Italia Scacchistica, 1934

b3BB2/2K5/ppnN4/k1P1N2R/4R3/1pr5/8/2q1Q3

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Qa1#
    • 1...Qf4
      • 2.Qa1#
    • 1...Qg5
      • 2.Qa1#
    • 1...Qh6
      • 2.Qa1#
    • 1...Qa1
      • 2.Qxa1#
    • 1...Sxe5
      • 2.Ra4#
    • 1...Sa7
      • 2.Ra4#
    • 1...Se7
      • 2.Ra4#
    • 1...Sb8
      • 2.Ra4#
    • 1...Sd8
      • 2.Ra4#
  • Tries
    • 1.Sb7+?
      • 1...Kb5
        • 2.Bxc6#
      • 1...Bxb7!
    • 1.Qxc3+?
      • 1...Sb4
        • 2.Sec4#
        • 2.Sdc4#
        • 2.Qxb4#
      • 1...Qxc3!
  • Keys
    • 1.cxb6!
      • threat
        • 2.Sxc6#
      • 1...Sb4+
        • 2.Sec4#
      • 1...Sd4+
        • 2.Sdc4#
      • 1...Sxe5+
        • 2.Sc4#
      • 1...Sa7+
        • 2.Sc6#
        • 2.Sdc4#
      • 1...Se7+
        • 2.Sc6#
      • 1...Sb8+
        • 2.Sc6#
        • 2.Sdc4#
      • 1...Sd8+
        • 2.Sc6#
        • 2.Sdc4#
      • 1...Qg5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(a);OGATE::QAR(A)
    • Q(a);OGATE::QAR(A),XQ(a)
    • S(g);P_PINP(C),XS(D)::R1(B)
    • S(g);P_PINP(C)::R1(B)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);N_SPINR(c),P-FLIGHT,P_SPINS(g),S_CUTB(h)::B(H),XS(g)
      • Refutation
        • B(h);XS(F)
    • Try
      • Q(A);CHECK,XR(c)
      • Refutation
        • Q(a);XQ(A)
  • Actual
    • P(C);XP(f)
    • Threat
      • R(E)+S(D),DCHECK,XS(g)
    • Vars
      • S(g);CHECK,N_SPINR(c),SBLOCK::R(E)+S(D),DCHECK
      • S(g);CHECK::S(F)
      • S(g);CHECK,P_SPINS(g),XS(D)::S(F)
      • S(g);CHECK::R(E)+S(D),DCHECK
      • Q(a);OGATE::QAR(A)
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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).