MESON Chess Problem Database

Problem Display
PID: 248227 (2B4b/8/2Q5/8/R1n1nkNp/8/4PPbK/8 w - - 0 1)

Blikeng, Bjarne

Deutsche Schachblatter, 1974

2B4b/8/2Q5/8/R1n1nkNp/8/4PPbK/8

#2

7 + 6

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qh6#
    • 1...Sb2
      • 2.Qc1#
      • 2.Qh6#
    • 1...Scd2
      • 2.Qh6#
    • 1...Sa3
      • 2.Qc1#
      • 2.Qh6#
    • 1...Se3
      • 2.Qh6#
    • 1...Sa5
      • 2.Qc1#
      • 2.Qh6#
    • 1...Se5
      • 2.Qc1#
      • 2.Qh6#
    • 1...Sb6
      • 2.Qc1#
      • 2.Qh6#
    • 1...Scd6
      • 2.Qc1#
    • 1...Sg5
      • 2.e3#
  • Tries
    • 1.Qd5?
      • threat
        • 2.Qf5#
      • 1...Se5
        • 2.Qd2#
      • 1...Se3
        • 2.fxe3#
      • 1...Scd6
        • 2.Qd2#
      • 1...Sg3
        • 2.e3#
      • 1...Sed6
        • 2.e3#
      • 1...Be5!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qf5#
      • 1...Kg5
        • 2.Qf5#
        • 2.Qh6#
      • 1...Se3
        • 2.Qh6#
      • 1...Scd6
        • 2.Qh6#
      • 1...Sg3
        • 2.Qe3#
      • 1...Sed6
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • K(d);S_FLIGHT::QAB1(F)
    • S(b);P_SPINS(c)::QAB(F)
    • S(b);OGATE,P_SPINS(c)::QAB(F)
    • S(c);P_SPINS(b),SBLOCK::P(A)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • S(b);N_GUARD,P_SPINS(c)::QAB(F)
        • S(b);OGATE,P_SPINS(c)::P(B),XS(b)
        • S(c);P_SPINS(b)::P(A)
      • Refutation
        • B(f);
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • S(b);P_SPINS(c)::QAB(F)
      • S(c);OGATE,P_SPINS(b)::QAB1(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).