MESON Chess Problem Database

Problem Display
PID: 214483 (8/3p4/1PqN2p1/2p1p3/2Bk1P2/2pP1p2/Q4K2/8 w - - 0 1)

Braddock, W

Australasian (The), 1877

8/3p4/1PqN2p1/2p1p3/2Bk1P2/2pP1p2/Q4K2/8

#2

7 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Sb5#
    • 1...Qb5
      • 2.Sxb5#
    • 1...Qd5
      • 2.Sb5#
    • 1...Qb7
      • 2.Sb5#
    • 1...Qa8
      • 2.Sb5#
    • 1...Qc7
      • 2.Sb5#
    • 1...Qc8
      • 2.Sb5#
    • 1...c2
      • 2.Qa1#
      • 2.Qb2#
    • 1...g5
      • 2.Sf5#
  • Keys
    • 1.Qa8!
      • 1...Qxa8
        • 2.Sb5#
      • 1...Qxb6
        • 2.Qe4#
        • 2.Qd5#
      • 1...Qxd6
        • 2.Qe4#
      • 1...exf4
        • 2.Qh8#
      • 1...c2
        • 2.Qa1#
      • 1...Qa4
        • 2.Qe4#
        • 2.Qd5#
      • 1...Qe4
        • 2.Sb5#
        • 2.Qxe4#
      • 1...Qb5
        • 2.Sxb5#
        • 2.Qe4#
        • 2.Qd5#
      • 1...Qd5
        • 2.Sb5#
        • 2.Qxd5#
      • 1...Qb7
        • 2.Sb5#
      • 1...Qc7
        • 2.Sb5#
        • 2.Qe4#
        • 2.Qd5#
      • 1...Qc8
        • 2.Sb5#
        • 2.Qe4#
        • 2.Qd5#
      • 1...e4
        • 2.Qh8#
      • 1...g5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(f);N_GUARD::S(G)
    • Q(f);N_GUARD::S(G),XQ(f)
    • P(g);N_GUARD::S(G)
  • Actual
    • Q(A);
    • Vars
      • Q(f);N_GUARD,XQ(A)::S(G)
      • Q(f);OGATE,XS(G)::QAR1(A)
      • P(e);OGATEB,XP(E)::QAB(A)
      • P(a);OGATEB::QAB(A)
      • Q(f);N_GUARD::S(G)
      • P(e);OGATEB::QAB(A)
      • P(g);N_GUARD::S(G)
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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).