MESON Chess Problem Database

Problem Display
PID: 273093 (4B3/1b5N/1P2p3/4Pp2/4kP1K/3p2P1/1n1pp3/Q5B1 w - - 0 1)

Conde, AG

Liverpool Weekly Mercury, 1904

(First published on Sat Dec 17 1904)

4B3/1b5N/1P2p3/4Pp2/4kP1K/3p2P1/1n1pp3/Q5B1

#2

9 + 8

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Sg5#
    • 1...Ba6
      • 2.Bc6#
    • 1...Bc6
      • 2.Bxc6#
    • 1...Ba8
      • 2.Qxa8#
    • 1...Bc8
      • 2.Bc6#
  • Tries
    • 1.Qa7?
      • threat
        • 2.Qxb7#
      • 1...Kf3
        • 2.Qxb7#
      • 1...Bd5
        • 2.Sg5#
      • 1...Ba6
        • 2.Bc6#
      • 1...Bc6
        • 2.Bxc6#
      • 1...Ba8
        • 2.Qxa8#
      • 1...Bc8
        • 2.Bc6#
      • 1...Kd5!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qxb7#
      • 1...Kf3
        • 2.Qxb7#
      • 1...Kd5
        • 2.Sf6#
      • 1...Bxa6
        • 2.Bc6#
      • 1...Bd5
        • 2.Sg5#
      • 1...Bc6
        • 2.Bxc6#
      • 1...Ba8
        • 2.Qxa8#
      • 1...Bc8
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(h);SBLOCK::S(H)
    • B(h);N_GUARD::B(I)
    • B(h);N_GUARD::B(I),XB(h)
    • B(h);OGATEB::QAB(A),XB(h)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A),XB(h)
      • Vars
        • K(e);S_FLIGHT::QAB(A),XB(h)
        • B(h);SBLOCK::S(H)
        • B(h);N_GUARD::B(I)
        • B(h);N_GUARD::B(I),XB(h)
        • B(h);OGATEB::QAB(A),XB(h)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB(A),XB(h)
    • Vars
      • K(e);S_FLIGHT::QAB(A),XB(h)
      • K(e);N_GUARD,S_FLIGHT::S(H)
      • B(h);N_GUARD,XQ(A)::B(I)
      • B(h);SBLOCK::S(H)
      • B(h);N_GUARD::B(I),XB(h)
      • B(h);OGATEB::QAB(A),XB(h)
      • B(h);N_GUARD::B(I)
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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).