MESON Chess Problem Database

Problem Display
PID: 255820 (4B3/1pp4P/R1q1knN1/3RP3/r5P1/5Qn1/b5K1/8 w - - 0 1)

Sachsel, Robert

Wiener Schachzeitung, 1936

4B3/1pp4P/R1q1knN1/3RP3/r5P1/5Qn1/b5K1/8

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.gxf5#
    • 1...Se4
      • 2.Bf7#
      • 2.Qf7#
    • 1...Sxg4
      • 2.Bd7#
      • 2.Bf7#
      • 2.Qf7#
    • 1...Sxd5
      • 2.Qf7#
    • 1...Sh5
      • 2.Bd7#
      • 2.Bf7#
      • 2.Qf7#
    • 1...Sd7
      • 2.Bxd7#
      • 2.Bf7#
      • 2.Qf7#
    • 1...Sxh7
      • 2.Bd7#
      • 2.Bf7#
      • 2.Qf7#
    • 1...Sg8
      • 2.Bd7#
      • 2.Bf7#
      • 2.Qf7#
      • 2.hxg8Q#
      • 2.hxg8B#
    • 1...b5
      • 2.Rxc6#
  • Keys
    • 1.Rd7!
      • threat
        • 2.Re7#
      • 1...Sxd7
        • 2.Bf7#
      • 1...Re4
        • 2.Qxf6#
      • 1...Sge4
        • 2.Qf5#
      • 1...Sf5
        • 2.gxf5#
      • 1...Sfe4
        • 2.Qf7#
      • 1...Sd5
        • 2.Qf7#
      • 1...Sg8
        • 2.hxg8Q#
        • 2.hxg8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(b);OGATE::P(C),XS(b)
    • S(f);OGATE,SBLOCK,XR(D)::QAB1(B)
    • P(g);N_GUARD::R(F),XQ(d)
  • Actual
    • R(D);P_SPINQ(B)
    • Threat
      • R1(D)
    • Vars
      • S(f);SBLOCK,XR(D)::B(I)
      • R(c);N_PINQ(B)::QAR1(B),XS(f)
      • S(b);N_PINQ(B)::QAB1(B)
      • S(b);OGATE::P(C),XS(b)
      • S(f);N_PINQ(B)::QAB1(B)
      • S(f);OGATE::PXS(f)=Q
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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).