MESON Chess Problem Database

Problem Display
PID: 103212 (8/6q1/2n3p1/2Q5/4k1Bn/4p3/b3N3/4N2K w - - 0 1)

Maybee, Edward E

Toronto Telegram, 1947

8/6q1/2n3p1/2Q5/4k1Bn/4p3/b3N3/4N2K

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Bf3#
    • 1...Sf3
      • 2.Bxf3#
    • 1...Sf5
      • 2.Bf3#
    • 1...Se5
      • 2.Qd4#
  • Tries
    • 1.Qxc6+?
      • 1...Ke5
        • 2.Sd3#
      • 1...Bd5!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Sg3#
      • 1...Qe5
        • 2.Qd3#
      • 1...Bd5
        • 2.Qf4#
      • 1...Sf5
        • 2.Bf3#
      • 1...Se5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(d);N_GUARD::B(D)
    • S(d);N_GUARD::B(D),XS(d)
    • S(e);N_GUARD,S_CUTQ(g)::QAR1(E)
  • Tries
    • Try
      • Q(E);CHECK,XS(e)
      • Vars
        • K(c);P-FLIGHT::S(A)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(E);
    • Threat
      • S(C)
    • Vars
      • Q(g);SBLOCK::QAB1(E)
      • B(a);SBLOCK::QAR1(E)
      • S(d);N_GUARD,SBLOCK::B(D)
      • S(e);N_GUARD,S_CUTQ(g)::QAR1(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).