MESON Chess Problem Database

Problem Display
PID: 195115 (4Q3/4n3/2P5/3Bk2K/4P3/4p3/1P2P3/8 w - - 0 1)

Shinkman, William Anthony

Pittsburgh Gazette-Times, 1918

4Q3/4n3/2P5/3Bk2K/4P3/4p3/1P2P3/8

#2

7 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qb8#
    • 1...Kf6
      • 2.Qh8#
  • Tries
    • 1.Qxe7+?
      • 1...Kf4
        • 2.Qg5#
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kd4!
    • 1.Qb8+?
      • 1...Kf6
        • 2.Qh8#
      • 1...Kd4!
    • 1.Qh8+?
      • 1...Kf4
        • 2.Qb8#
      • 1...Kd6!
  • Keys
    • 1.b4!
      • 1...Kd4
        • 2.Qh8#
      • 1...Kf4
        • 2.Qb8#
      • 1...Kd6
        • 2.Qb8#
      • 1...Kf6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINS(c),S_FLIGHT::QAB(G)
  • Tries
    • Try
      • Q(G);CHECK,XS(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(G);CHECK,N_PINS(c)
      • Vars
        • K(b);S_FLIGHT::QAB(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(G);CHECK,N_PINS(c)
      • Vars
        • K(b);S_FLIGHT::QAB(G)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(A);
    • Vars
      • K(b);N_SPINS(c),S_FLIGHT::QAB(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).