MESON Chess Problem Database

Problem Display
PID: 201449 (1q2n2N/2bpP3/1N2k3/p5Pp/K2Q2rr/B1p4B/n7/5R2 w - - 0 1)

Mari, Alberto

L'Italia Scacchistica, 1922

1q2n2N/2bpP3/1N2k3/p5Pp/K2Q2rr/B1p4B/n7/5R2

#2

9 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Qd5#
    • 1...Sf6
      • 2.Rxf6#
    • 1...Sg7
      • 2.Rf6#
    • 1...d6
      • 2.Qe4#
  • Tries
    • 1.Bxg4+?
      • 1...hxg4
        • 2.Qd5#
      • 1...Rxg4!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Sxd7#
        • 2.Sg6#
        • 2.Sf7#
      • 1...d5!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sf8#
      • 1...Bf4
        • 2.Qd5#
      • 1...Sf6
        • 2.Rxf6#
      • 1...Bd6
        • 2.Qc4#
      • 1...Sb4
        • 2.Qxd7#
      • 1...Sd6
        • 2.Rf6#
      • 1...Sg7
        • 2.Rf6#
      • 1...d6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(h);N_PINQ(E)::QAB1(E)
    • S(k);N_GUARD::R1(A),XS(k)
    • S(k);N_GUARD::R1(A)
    • P(i);S_CUTB(h)::QAR2(E)
  • Tries
    • Try
      • B(C);CHECK,N_SPINQ(E),XR(c)
      • Vars
        • P(f);XB(C)::QAB1(E)
      • Refutation
        • R(d);P_PINQ(E),XB(C)
    • Try
      • Q(E);CHECK
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • B(h);N_PINQ(E)::QAB1(E)
      • S(k);N_GUARD::R1(A),XS(k)
      • B(h);S_CUTP(i)::QAB(E)
      • S(a);N_PINQ(E)::QAB1(E),XP(i)
      • S(k);N_GUARD::R1(A)
      • P(i);S_CUTB(h)::QAR2(E)
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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).