MESON Chess Problem Database

Problem Display
PID: 173995 (3n1NN1/6p1/3k1bR1/2Rp4/8/2Q5/1Kn5/1brr4 w - - 0 1)

Bottacchi, Antonio

L'Illustrazione Italiana, 1917

3n1NN1/6p1/3k1bR1/2Rp4/8/2Q5/1Kn5/1brr4

#2

6 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Rxc6#
    • 1...Se6
      • 2.Rc6#
    • 1...Sb7
      • 2.Rc6#
    • 1...Sf7
      • 2.Rc6#
  • Tries
    • 1.Rc7?
      • threat
        • 2.Rd7#
      • 1...Sd4
        • 2.Qg3#
      • 1...d4
        • 2.Qc5#
      • 1...Rd4!
    • 1.Rxf6+?
      • 1...Se6
        • 2.Rc6#
        • 2.Rxe6#
      • 1...gxf6!
  • Keys
    • 1.Rc8!
      • threat
        • 2.Rxd8#
      • 1...Rd4
        • 2.Qc7#
      • 1...Sd4
        • 2.Qg3#
      • 1...d4
        • 2.Qc5#
      • 1...Sc6
        • 2.Rxc6#
      • 1...Se6
        • 2.Rc6#
      • 1...Sb7
        • 2.Rc6#
      • 1...Sf7
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(i);N_GUARD::R1(C),XS(i)
    • S(i);N_GUARD,N_SPINB(g)::R1(C)
    • S(i);N_GUARD::R1(C)
  • Tries
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • S(d);N_PINQ(B)::QAB(B)
        • P(e);N_PINQ(B)::QAB1(B)
      • Refutation
        • R(c);N_PINQ(B)
    • Try
      • R(D);CHECK,N_SPINQ(B),XB(g)
      • Refutation
        • P(h);XR(D)
  • Actual
    • R(C);
    • Threat
      • R(C),XS(i)
    • Vars
      • R(c);N_PINQ(B)::QAB1(B)
      • S(d);N_PINQ(B)::QAB(B)
      • P(e);N_PINQ(B)::QAB1(B)
      • S(i);N_GUARD::R1(C),XS(i)
      • S(i);N_GUARD,N_SPINB(g)::R1(C)
      • S(i);N_GUARD::R1(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).