MESON Chess Problem Database

Problem Display
PID: 101303 (b7/N2B1p2/p1Qp1N1R/rr2kp2/8/4P3/8/2n4K w - - 0 1)

Bottacchi, Antonio

Good Companions (October), 1918

b7/N2B1p2/p1Qp1N1R/rr2kp2/8/4P3/8/2n4K

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb7
      • 2.Qc3#
    • 1...Bxc6+
      • 2.Sxc6#
    • 1...f4
      • 2.Sg4#
    • 1...d5
      • 2.Qc7#
  • Tries
    • 1.Qxa8?
      • threat
        • 2.Sc6#
        • 2.Qe8#
      • 1...Rc5
        • 2.Qe8#
      • 1...Rb6
        • 2.Qe8#
      • 1...Rb8
        • 2.Sc6#
      • 1...d5!
  • Keys
    • 1.Bc8!
      • threat
        • 2.Sd7#
      • 1...Bxc6+
        • 2.Sxc6#
      • 1...Rd5
        • 2.Qe8#
      • 1...Rb7
        • 2.Qc3#
      • 1...f4
        • 2.Sg4#
      • 1...d5
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);N_PINQ(C)::QAB(C)
    • B(i);CHECK,XQ(C)::S(F),XB(i)
    • P(e);N_GUARD::S(D)
    • P(g);N_PINQ(C)::QAB(C)
  • Tries
    • Try
      • Q(C);N_SPINQ(C),XB(i)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::QAR(C)
        • R(c);::S(F)
      • Refutation
        • P(g);
  • Actual
    • B(G);
    • Threat
      • S(D)
    • Vars
      • B(i);CHECK,XQ(C)::S(F),XB(i)
      • R(c);N_PINQ(C)::QAR(C)
      • R(c);N_PINQ(C)::QAB(C)
      • P(e);N_GUARD::S(D)
      • P(g);N_PINQ(C)::QAB(C)
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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).