MESON Chess Problem Database

Problem Display
PID: 198690 (8/1B6/1K6/1R6/2pkN3/5R2/1qp5/B1n5 w - - 0 1)

Carra, Arturo

L'Italia Scacchistica, 1921

8/1B6/1K6/1R6/2pkN3/5R2/1qp5/B1n5

#2

6 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Bxc3#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Sf5#
      • 1...Sd3
        • 2.Se2#
      • 1...c3!
  • Keys
    • 1.Sc3!
      • 1...Qxb5+
        • 2.Sxb5#
      • 1...Qxa1
        • 2.Rd5#
      • 1...Qxc3
        • 2.Bxc3#
      • 1...Sd3
        • 2.Se2#
      • 1...Qa3
        • 2.Se2#
        • 2.Rd5#
      • 1...Qb1
        • 2.Se2#
      • 1...Qa2
        • 2.Se2#
        • 2.Rd5#
      • 1...Qb3
        • 2.Se2#
      • 1...Qb4
        • 2.Se2#
      • 1...Sa2
        • 2.Se2#
      • 1...Se2
        • 2.Sxe2#
      • 1...Sb3
        • 2.Se2#
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_PINR(D),OGATE::B(A),XQ(b)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(a);N_GUARD::S(C)
      • Refutation
        • P(d);N_SPINQ(b)
  • Actual
    • S(C);N_PINQ(b)
    • Vars
      • Q(b);CHECK,XR(D)::B(A)+S(C),DCHECK,XQ(b)
      • Q(b);N_PINR(D),XB(A)::R1(D)
      • Q(b);N_PINR(D),OGATE,P_SPINQ(b),XS(C)::B(A),XQ(b)
      • S(a);N_GUARD::S(C)
      • Q(b);::B(A)+S(C),DCHECK
      • S(a);N_GUARD::S(C),XS(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).