MESON Chess Problem Database

Problem Display
PID: 181891 (8/8/2K5/4bP2/4kN2/1P6/8/2B3Q1 w - - 0 1)

Hansen, Lorenz

American Chess Bulletin, 1905

8/8/2K5/4bP2/4kN2/1P6/8/2B3Q1

#2

6 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qg2#
    • 1...Kxf5
      • 2.Qg6#
  • Tries
    • 1.Qg2+?
      • 1...Kxf5
        • 2.Qg6#
      • 1...Kd4!
  • Keys
    • 1.Qg8!
      • 1...Kf3
        • 2.Qg2#
      • 1...Kd4
        • 2.Qc4#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Bxf4
        • 2.Qd5#
      • 1...Ba1
        • 2.Qd5#
      • 1...Bb2
        • 2.Qd5#
      • 1...Bc3
        • 2.Qd5#
      • 1...Bd6
        • 2.Qd5#
      • 1...Bf6
        • 2.Qd5#
      • 1...Bc7
        • 2.Qd5#
      • 1...Bg7
        • 2.Qd5#
      • 1...Bb8
        • 2.Qd5#
      • 1...Bh8
        • 2.Qd5#
      • 1...Bd4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(B)
    • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(B)
      • B(b);XS(D)::QAB1(B)
      • B(b);::QAB1(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).