MESON Chess Problem Database

Problem Display
PID: 107214 (3b4/5R1b/3Bpp2/4Nq1n/3p1k1P/5p1p/3P3K/1B2Q3 w - - 0 1)

Stocchi, Ottavio

Xadrez Brasileiro, 1937

3b4/5R1b/3Bpp2/4Nq1n/3p1k1P/5p1p/3P3K/1B2Q3

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Sg6#
    • 1...Sg3
      • 2.Qxg3#
    • 1...Sg7
      • 2.Qg3#
    • 1...f2
      • 2.Qxf2#
    • 1...d3
      • 2.Qe3#
    • 1...fxe5
      • 2.Qe4#
  • Keys
    • 1.Qg1!
      • threat
        • 2.Sg6#
      • 1...Qxb1
        • 2.Qg4#
      • 1...Qxe5
        • 2.Qg5#
      • 1...fxe5
        • 2.Qxd4#
      • 1...Qc2
        • 2.Qg4#
      • 1...Qd3
        • 2.Qg4#
      • 1...Qe4
        • 2.Qg4#
        • 2.Qg5#
      • 1...d3
        • 2.Qe3#
      • 1...Qg6
        • 2.Sxg6#
      • 1...Bg6
        • 2.Sxg6#
      • 1...Sg3
        • 2.Qxg3#
      • 1...f2
        • 2.Qxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • Q(e);P_SPINP(h),SBLOCK::B(G)+S(F),DCHECK
    • S(f);N_GUARD::QAB1(B),XS(f)
    • S(f);N_GUARD::QAB1(B)
    • P(a);OGATEB::QAR2(B),XP(a)
    • P(c);N_GUARD::QAB1(B)
    • P(h);P_SPINP(h),P_SPINQ(e),XS(F)::QAR1(B)
  • Actual
    • Q(B);
    • Threat
      • B(G)+S(F),DCHECK
    • Vars
      • Q(e);N_GUARD,P_SPINP(h),XB(A)::QAR1(B)
      • Q(e);N_GUARD,P_SPINP(h),P_SPINQ(e),XS(F)::QAB1(B)
      • P(h);P_SPINP(h),P_SPINQ(e),XS(F)::QAR2(B),XP(c)
      • Q(e);N_GUARD,P_PINP(C),P_SPINP(h)::QAR1(B)
      • Q(e);N_GUARD,P_SPINP(h)::QAR1(B)
      • P(c);N_GUARD::QAB1(B)
      • Q(e);P_SPINP(h)::B(G)+S(F),DCHECK,XQ(e)
      • B(i);::B(G)+S(F),DCHECK,XB(i)
      • S(f);N_GUARD::QAB1(B),XS(f)
      • P(a);OGATEB::QAR2(B),XP(a)
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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).