MESON Chess Problem Database

Problem Display
PID: 108075 (b7/3Qp3/3pP2R/N1pkp3/3p4/3P4/8/1n2b2K w - - 0 1)

Fontaine, Leon

Boletim da UBP, 1965

b7/3Qp3/3pP2R/N1pkp3/3p4/3P4/8/1n2b2K

#2

6 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc6
      • 2.Qxc6#
    • 1...Bb7
      • 2.Qxb7#
    • 1...c4
      • 2.Qb5#
    • 1...e4
      • 2.Rh5#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sb6#
      • 1...e4
        • 2.Rh5#
      • 1...Ba5!
    • 1.Qe8?
      • threat
        • 2.Qxa8#
      • 1...c4
        • 2.Qb5#
      • 1...e4
        • 2.Qh5#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qxa8#
      • 1...e4
        • 2.Rh5#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...c4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(i);N_GUARD::QAB1(F),XB(i)
    • B(i);N_GUARD::QAB(F),XB(i)
    • P(d);OGATEB::QAR2(F)
    • P(f);OGATEB::R(E)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • P(f);OGATEB::R(E)
      • Refutation
        • B(b);
    • Try
      • Q(F);N_PINP(g)
      • Threat
        • QAB(F),XB(i)
      • Vars
        • P(d);OGATEB::QAR2(F)
        • P(f);OGATEB::QAR(F)
        • B(i);N_GUARD::QAB1(F),XB(i)
      • Refutation
        • B(i);
  • Actual
    • Q(F);N_PINP(g)
    • Threat
      • QAB(F),XB(i)
    • Vars
      • P(f);OGATEB::R(E)
      • B(i);N_GUARD::QAB1(F),XB(i)
      • B(i);N_GUARD::QAB(F),XB(i)
      • P(d);OGATE::QAB1(F),XP(d)
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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).