MESON Chess Problem Database

Problem Display
PID: 174017 (2Nb3K/1P1k1P2/1n1B1n1p/3P4/8/Q7/5pp1/1b3q1r w - - 0 1)

Bottacchi, Antonio

L'Illustrazione Italiana, 1922

2Nb3K/1P1k1P2/1n1B1n1p/3P4/8/Q7/5pp1/1b3q1r

#2

7 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Qa4#
    • 1...Sxc8
      • 2.b8S#
    • 1...Se8
      • 2.f8S#
  • Tries
    • 1.Bg3?
      • threat
        • 2.Qd6#
      • 1...Sxc8
        • 2.b8S#
      • 1...Bc7
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Sc4
        • 2.Qa4#
      • 1...Se8
        • 2.f8S#
      • 1...Se4!
    • 1.Bf4?
      • threat
        • 2.Qd6#
      • 1...Sxc8
        • 2.b8S#
      • 1...Bc7
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Sc4
        • 2.Qa4#
      • 1...Se8
        • 2.f8S#
      • 1...Se4!
    • 1.Be5?
      • threat
        • 2.Qd6#
      • 1...Sxc8
        • 2.b8S#
      • 1...Bc7
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Sc4
        • 2.Qa4#
      • 1...Se8
        • 2.f8S#
      • 1...Se4!
    • 1.Qa4+?
      • 1...Qb5
        • 2.Qxb5#
      • 1...Sxa4!
  • Keys
    • 1.Bh2!
      • threat
        • 2.Qd6#
      • 1...Sxc8
        • 2.b8S#
      • 1...Bc7
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Sc4
        • 2.Qa4#
      • 1...Se4
        • 2.Qh3#
      • 1...Se8
        • 2.f8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,S_CUTQ(b)::QAB(A)
    • S(f);SBLOCK,XS(F)::P=S
    • S(g);SBLOCK::P=S
  • Tries
    • Try
      • B(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(f);SBLOCK,XS(F)::P=S
        • B(j);N_GUARD::QAR1(A)
        • B(j);N_GUARD::QAR1(A),XB(j)
        • S(f);N_GUARD,S_CUTQ(b)::QAB(A)
        • S(g);SBLOCK::P=S
      • Refutation
        • S(g);
    • Try
      • B(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(f);SBLOCK,XS(F)::P=S
        • B(j);N_GUARD::QAR1(A)
        • B(j);N_GUARD::QAR1(A),XB(j)
        • S(f);N_GUARD,S_CUTQ(b)::QAB(A)
        • S(g);SBLOCK::P=S
      • Refutation
        • S(g);
    • Try
      • B(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(f);SBLOCK,XS(F)::P=S
        • B(j);N_GUARD::QAR1(A)
        • B(j);N_GUARD::QAR1(A),XB(j)
        • S(f);N_GUARD,S_CUTQ(b)::QAB(A)
        • S(g);SBLOCK::P=S
      • Refutation
        • S(g);
    • Try
      • Q(A);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAB(A),XQ(b)
      • Refutation
        • S(f);XQ(A)
  • Actual
    • B(C);
    • Threat
      • QAR1(A)
    • Vars
      • S(f);SBLOCK,XS(F)::P=S
      • B(j);N_GUARD::QAR1(A)
      • B(j);N_GUARD::QAR1(A),XB(j)
      • S(f);N_GUARD,S_CUTQ(b)::QAB(A)
      • S(g);N_GUARD,S_CUTB(a)::QAB(A)
      • S(g);SBLOCK::P=S
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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).