MESON Chess Problem Database

Problem Display
PID: 120967 (8/4p1P1/1K2P3/3NkP2/4p3/3p4/3B3P/6Q1 w - - 0 1)

Stubbs, Charles Francis

Montreal Gazette, 1893

8/4p1P1/1K2P3/3NkP2/4p3/3p4/3B3P/6Q1

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qc5#
  • Tries
    • 1.Bc3+?
      • 1...Kxd5
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kxf5!
    • 1.Bf4+?
      • 1...Kxd5
        • 2.Qc5#
      • 1...Kxf5!
  • Keys
    • 1.Se3!
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6
        • 2.Qg3#
      • 1...Kf6
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(c);OGATEB,P-FLIGHT,XS(D)::QAR1(A)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT,XP(E)
    • Try
      • B(B);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(D)::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT,XP(E)
  • Actual
    • S(D);
    • Vars
      • K(c);S_FLIGHT::QAB(A)
      • K(c);S_FLIGHT::QAB1(A)
      • K(c);S_FLIGHT::B(B)
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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).