MESON Chess Problem Database

Problem Display
PID: 222687 (2N5/b2n1q2/3p4/2kP2r1/2P5/1KP3PQ/8/4B3 w - - 0 1)

Sweeney, Mary B

Cincinnati Commercial, 1883

2N5/b2n1q2/3p4/2kP2r1/2P5/1KP3PQ/8/4B3

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Bf2#
    • 1...Qg6
      • 2.Bf2#
    • 1...Qg8
      • 2.Bf2#
    • 1...Qf2
      • 2.Bxf2#
    • 1...Qh7
      • 2.Bf2#
    • 1...Sf6
      • 2.Bf2#
  • Keys
    • 1.Qxd7!
      • threat
        • 2.Qb5#
        • 2.Qc6#
        • 2.Qxd6#
      • 1...Qxd5
        • 2.Qb5#
      • 1...Qxd7
        • 2.Bf2#
      • 1...Rxd5
        • 2.Qb5#
      • 1...Qe6
        • 2.Qb5#
        • 2.Qc6#
        • 2.Qxa7#
        • 2.Qc7#
      • 1...Qg6
        • 2.Bf2#
        • 2.Qb5#
        • 2.Qc6#
        • 2.Qxa7#
        • 2.Qc7#
      • 1...Qe8
        • 2.Qxd6#
        • 2.Qxa7#
      • 1...Qf4
        • 2.Qb5#
        • 2.Qc6#
        • 2.Qxa7#
        • 2.Qc7#
      • 1...Qf6
        • 2.Qb5#
        • 2.Qc6#
        • 2.Qxa7#
        • 2.Qc7#
      • 1...Qe7
        • 2.Qb5#
        • 2.Qc6#
      • 1...Qf8
        • 2.Qb5#
        • 2.Qc6#
        • 2.Qxa7#
        • 2.Qc7#
      • 1...Rg6
        • 2.Qb5#
        • 2.Qc6#
      • 1...Bb8
        • 2.Qb5#
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(f);N_GUARD::B(A)
    • Q(f);N_GUARD::B(A),XQ(f)
    • S(e);S_CUTQ(f)::B(A)
  • Actual
    • Q(E);XS(e)
    • Threat
      • DUALS(3)
    • Vars
      • Q(f);P_PINP(F),XP(G)::QAR1(E)
      • Q(f);N_GUARD,XQ(E)::B(A)
      • R(b);XP(G)::QAR1(E)
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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).