MESON Chess Problem Database

Problem Display
PID: 202331 (B2r4/1r4p1/5pK1/2Qp1R2/4kp2/8/7N/b3N3 w - - 0 1)

Mari, Alberto

L'Italia Scacchistica, 1923

B2r4/1r4p1/5pK1/2Qp1R2/4kp2/8/7N/b3N3

#2

6 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Qe7#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Sd2#
      • 1...Rb2
        • 2.Qc4#
      • 1...Bd4
        • 2.Qc2#
      • 1...d4
        • 2.Qe7#
      • 1...Bc3!
    • 1.Shf3?
      • threat
        • 2.Sd2#
      • 1...Bd4
        • 2.Qxd4#
      • 1...d4
        • 2.Qe7#
      • 1...Rb2
        • 2.Qd4#
        • 2.Qe7#
      • 1...Bc3!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sf2#
      • 1...Rb2
        • 2.Qc4#
      • 1...Bd4
        • 2.Qc2#
      • 1...d4
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);P_SPINR(f),SBLOCK,S_CUTB(a)::QAR(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • R(f);P_SPINP(d),S_CUTB(a)::QAR2(C)
        • B(a);SBLOCK::QAB(C)
        • P(d);P_SPINR(f),SBLOCK,S_CUTB(a)::QAR(C)
      • Refutation
        • B(a);
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • B(a);N_GUARD::QAR1(C),XB(a)
        • P(d);P_SPINR(f),S_CUTB(a)::QAR(C)
      • Refutation
        • B(a);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • R(f);P_SPINP(d),S_CUTB(a)::QAR2(C)
      • B(a);SBLOCK::QAB(C)
      • P(d);P_SPINR(f),SBLOCK,S_CUTB(a)::QAR(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).