MESON Chess Problem Database

Problem Display
PID: 223230 (7B/bQ6/1nP5/4RP2/3k4/N5pr/4K2p/8 w - - 0 1)

Barnett, Bernard

Nashville Daily American, 1886

7B/bQ6/1nP5/4RP2/3k4/N5pr/4K2p/8

#2

7 + 6

533 Philadelphia Times 1899
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Qb4#
    • 1...Sc4
      • 2.Sb5#
    • 1...Sd7
      • 2.Qb2#
      • 2.Qb4#
    • 1...Sa8
      • 2.Qb2#
      • 2.Qb4#
    • 1...Sc8
      • 2.Qb2#
      • 2.Qb4#
  • Tries
    • 1.Qxb6+?
      • 1...Kc3
        • 2.Re3#
        • 2.Rc5#
      • 1...Bxb6!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qc5#
      • 1...Kc3
        • 2.Re3#
      • 1...Sa4
        • 2.Qb4#
      • 1...Sc4
        • 2.Sb5#
      • 1...Sd5
        • 2.Re4#
      • 1...Sd7
        • 2.Qb4#
      • 1...Sa8
        • 2.Qb4#
      • 1...Sc8
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(e);OGATE::QAR2(F)
    • S(e);SBLOCK::S(B)
  • Tries
    • Try
      • Q(F);CHECK,XS(e)
      • Refutation
        • B(f);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • K(d);S_FLIGHT::B(G)+R(C),DCHECK
      • S(e);N_GUARD::QAR2(F)
      • S(e);SBLOCK::S(B)
      • S(e);SBLOCK::B(G)+R(C),DCHECK
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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).