MESON Chess Problem Database

Problem Display
PID: 143227 (1rk1K3/pp6/6p1/4B3/N1pP2p1/7b/6B1/3Q4 w - - 0 1)

Nield, Joshua

British Chess Magazine, 1893

1rk1K3/pp6/6p1/4B3/N1pP2p1/7b/6B1/3Q4

#2

6 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg2
      • 2.Qxg4#
    • 1...g3
      • 2.Bxh3#
    • 1...a5
      • 2.Sb6#
    • 1...a6
      • 2.Sb6#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qxc4#
      • 1...Bxg2
        • 2.Qxg4#
      • 1...c3
        • 2.Qc4#
      • 1...b5!
  • Keys
    • 1.Qf3!
      • 1...Bxg2
        • 2.Qxg4#
      • 1...gxf3
        • 2.Bxh3#
      • 1...Ra8
        • 2.Qxb7#
      • 1...c3
        • 2.Qxc3#
      • 1...g3
        • 2.Bxh3#
      • 1...g5
        • 2.Qf5#
      • 1...a5
        • 2.Sb6#
      • 1...a6
        • 2.Sb6#
      • 1...b5
        • 2.Qc6#
      • 1...b6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD,XB(B)::QAB(A),XP(c)
    • P(c);OGATEB::B(B),XB(a)
    • P(e);N_GUARD::S(C)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR(A),XP(b)
      • Vars
        • B(a);N_GUARD,XB(B)::QAB(A),XP(c)
        • P(b);::QAR(A)
      • Refutation
        • P(f);
  • Actual
    • Q(A);
    • Vars
      • B(a);N_GUARD,XB(B)::QAB(A),XP(c)
      • P(c);OGATEB,XQ(A)::B(B),XB(a)
      • R(g);N_GUARD::QAB1(A),XP(f)
      • P(b);OGATEB::QAR(A),XP(b)
      • P(c);OGATEB::B(B),XB(a)
      • P(d);N_GUARD::QAB(A)
      • P(e);N_GUARD::S(C)
      • P(f);N_GUARD::QAR2(A)
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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).