MESON Chess Problem Database

Problem Display
PID: 102773 (2b3B1/n1B4Q/4N3/1p1kN3/1p2p3/bK6/8/8 w - - 0 1)

Curiosa felicitas

Revue d'Echecs, 1904

2b3B1/n1B4Q/4N3/1p1kN3/1p2p3/bK6/8/8

#2

6 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qd7#
    • 1...Bb7
      • 2.Qd7#
    • 1...Bd7
      • 2.Qxd7#
    • 1...e3
      • 2.Qd3#
      • 2.Qh1#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Qc5#
        • 2.Qd6#
      • 1...Bxe6
        • 2.Qd6#
      • 1...e3!
  • Keys
    • 1.Sd3!
      • 1...Kc6
        • 2.Sd8#
      • 1...Bxe6
        • 2.Qd7#
      • 1...exd3
        • 2.Qh1#
      • 1...Bc1
        • 2.Sxb4#
      • 1...Bb2
        • 2.Sxb4#
      • 1...Ba6
        • 2.Qd7#
      • 1...Bb7
        • 2.Qd7#
      • 1...Bd7
        • 2.Qxd7#
      • 1...Sc6
        • 2.Sdf4#
      • 1...e3
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(g);N_GUARD::QAR2(E)
    • B(g);N_GUARD::QAR2(E),XB(g)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);P_SPINB(g),XS(C)::QAR1(E)
      • Refutation
        • P(c);
  • Actual
    • S(B);
    • Vars
      • K(e);S_FLIGHT::S(C)
      • B(g);N_GUARD,P_SPINB(g),XS(C)::QAR2(E)
      • P(c);OGATEB,XS(B)::QAB(E)
      • B(a);N_GUARD::S(B),XP(b)
      • B(g);N_GUARD::QAR2(E)
      • B(g);N_GUARD::QAR2(E),XB(g)
      • S(f);SBLOCK::S(B)
      • P(c);OGATEB::QAB(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).