MESON Chess Problem Database

Problem Display
PID: 266131 (BB4Q1/4p2p/3n1p1N/R3N3/1n3k2/R4P1b/3P4/6K1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schweizerische Schachzeitung, 2017

BB4Q1/4p2p/3n1p1N/R3N3/1n3k2/R4P1b/3P4/6K1

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qg4#
    • 1...Bg2
      • 2.Qg4#
    • 1...Bg4
      • 2.Qxg4#
    • 1...Sa2
      • 2.Sd3#
    • 1...Sc2
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sa6
      • 2.Sd3#
    • 1...Sc4
      • 2.Sd3#
      • 2.Sg6#
    • 1...Se4
      • 2.Sg6#
    • 1...Sb5
      • 2.Sd3#
    • 1...Sf5
      • 2.Sd3#
    • 1...Sb7
      • 2.Sg6#
    • 1...Sf7
      • 2.Sd3#
      • 2.Sg6#
    • 1...Sc8
      • 2.Sd3#
      • 2.Sg6#
    • 1...Se8
      • 2.Sd3#
      • 2.Sg6#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Qg3#
      • 1...Sd3+
        • 2.Sxd3#
      • 1...Bg4
        • 2.Qxg4#
      • 1...Sf5
        • 2.Sd3#
      • 1...Se4+!
  • Keys
    • 1.Kh2!
      • threat
        • 2.Qg3#
      • 1...Bg4
        • 2.Qxg4#
      • 1...Se4
        • 2.Sg6#
      • 1...Sf5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • B(a);N_GUARD::QAR1(J)
    • B(a);N_GUARD::QAR1(J),XB(a)
    • S(b);N_GUARD::S(F)
    • S(b);N_GUARD::S(F),XS(b)
    • S(d);::B(I)+S(F),DCHECK
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB1(J)
      • Vars
        • S(b);CHECK,N_GUARD::S(F),XS(b)
        • B(a);N_GUARD::QAR1(J),XB(a)
        • S(d);::B(I)+S(F),DCHECK
      • Refutation
        • S(d);CHECK
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAB1(J)
    • Vars
      • B(a);N_GUARD::QAR1(J),XB(a)
      • S(d);::B(I)+S(F),DCHECK
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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).