MESON Chess Problem Database

Problem Display
PID: 272390 (5N1K/8/5B1k/7B/2r1n3/4N3/2q5/2Q5 w - - 0 1)

Back, Par-Erik

Schackvarlden, 1937

5N1K/8/5B1k/7B/2r1n3/4N3/2q5/2Q5

#2

6 + 4

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Bf3?
      • threat
        • 2.Sf5#
      • 1...Sg5
        • 2.Bg7#
      • 1...Sd2!
    • 1.Bg6?
      • threat
        • 2.Sg4#
        • 2.Sf5#
      • 1...Sg5
        • 2.Bg7#
      • 1...Sd2!
    • 1.Bf7?
      • threat
        • 2.Sg4#
        • 2.Sf5#
      • 1...Sg5
        • 2.Bg7#
      • 1...Sd2!
    • 1.Be8?
      • threat
        • 2.Sg4#
        • 2.Sf5#
      • 1...Sg5
        • 2.Bg7#
      • 1...Sd2!
  • Keys
    • 1.Bg4!
      • threat
        • 2.Sf5#
      • 1...Sd2
        • 2.Qh1#
      • 1...Sg5
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Threat
        • QAB(A)+S(B),DCHECK
      • Vars
        • S(c);SBLOCK::B(D)
      • Refutation
        • S(c);
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);SBLOCK::B(D)
      • Refutation
        • S(c);
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);SBLOCK::B(D)
      • Refutation
        • S(c);
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);SBLOCK::B(D)
      • Refutation
        • S(c);
  • Actual
    • B(C);
    • Threat
      • QAB(A)+S(B),DCHECK
    • Vars
      • S(c);S_CUTQ(a)::QAR(A)
      • S(c);SBLOCK::B(D)
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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).