MESON Chess Problem Database

Problem Display
PID: 78596 (6B1/1Q6/2n5/8/8/KN6/2b5/1k6 w - - 0 1)

Backe, Espen

Die Schwalbe, 1982

6B1/1Q6/2n5/8/8/KN6/2b5/1k6

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bh7
      • 2.Bxh7#
      • 2.Qxh7#
  • Tries
    • 1.Sd2+?
      • 1...Ka1
        • 2.Qb2#
      • 1...Kc1!
    • 1.Qxc6?
      • 1...Bd1
        • 2.Qc1#
      • 1...Bd3
        • 2.Qc1#
      • 1...Be4
        • 2.Qxe4#
        • 2.Qc1#
      • 1...Bf5
        • 2.Qc1#
      • 1...Bg6
        • 2.Qc1#
        • 2.Qxg6#
      • 1...Bh7
        • 2.Bxh7#
        • 2.Qc1#
      • 1...Bxb3!
  • Keys
    • 1.Bh7!
      • 1...Bxh7
        • 2.Qxh7#
      • 1...Bd3
        • 2.Bxd3#
      • 1...Be4
        • 2.Bxe4#
      • 1...Bf5
        • 2.Bxf5#
      • 1...Bg6
        • 2.Bxg6#
      • 1...Sb4
        • 2.Qh1#
      • 1...Sd4
        • 2.Qh1#
      • 1...Sa5
        • 2.Qh1#
      • 1...Se5
        • 2.Qh1#
      • 1...Sa7
        • 2.Qh1#
      • 1...Se7
        • 2.Qh1#
      • 1...Sb8
        • 2.Qh1#
      • 1...Sd8
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);XS(c)
      • Vars
        • B(b);OGATE::QAR1(C)
      • Refutation
        • B(b);XS(B)
  • Actual
    • B(D);P_PINB(b)
    • Vars
      • B(b);N_SPINB(b),OGATE,XB(D)::QAB(C),XB(b)
      • B(b);OGATEB::B(D),XB(b)
      • S(c);OGATE::QAR(C)
HTML5 logo

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).