MESON Chess Problem Database

Problem Display
PID: 223445 (Q7/3K1p2/4pNp1/4k1p1/1P4P1/4p3/4B3/8 w - - 0 1)

Fischer, Hieronymus

Bruderschaft, 1886

Q7/3K1p2/4pNp1/4k1p1/1P4P1/4p3/4B3/8

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qa1#
    • 1...Kxf6
      • 2.Qh8#
  • Tries
    • 1.Ke7?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf4!
    • 1.Qb8+?
      • 1...Kxf6
        • 2.Qh8#
      • 1...Kd4!
    • 1.Qc8?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kxf6
        • 2.Qh8#
      • 1...Kf4!
    • 1.Qf8?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kxf6
        • 2.Qh8#
      • 1...Kf4!
    • 1.Qh8?
      • 1...Kf4
        • 2.Qh2#
      • 1...Kd4!
  • Keys
    • 1.Qh1!
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf4
        • 2.Qh2#
      • 1...Kxf6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(F)
    • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(F)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • QAR1(F)
      • Vars
        • K(b);S_FLIGHT::QAB(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
        • K(b);OGATEB,P_SPINP(f),S_FLIGHT,XS(D)::QAB(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT::QAB(F)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(b);S_FLIGHT::QAB(F)
      • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(F)
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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).