MESON Chess Problem Database

Problem Display
PID: 74853 (qb6/1bp1n2N/Q5Np/2R3rk/5B2/5R1P/4B3/3K4 w - - 0 1)

Eriksson, Finn Olof

Tijdschrift vd KNSB, 1938

qb6/1bp1n2N/Q5Np/2R3rk/5B2/5R1P/4B3/3K4

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5+
      • 2.Rd3#
  • Tries
    • 1.Bxg5?
      • threat
        • 2.Sf4#
      • 1...Sxg6
        • 2.Sf6#
      • 1...c6
        • 2.Rf6#
      • 1...Sd5
        • 2.Rf1#
        • 2.Rf2#
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rfc3#
        • 2.Rd3#
        • 2.Re3#
        • 2.Rg3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Rf6#
        • 2.Rf7#
        • 2.Rf8#
      • 1...hxg5!
  • Keys
    • 1.Bg3!
      • threat
        • 2.Sf4#
      • 1...Rd5+
        • 2.Rd3#
      • 1...Sxg6
        • 2.Sf6#
      • 1...c6
        • 2.Rf6#
      • 1...Sd5
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(a);CHECK,S_CUTB(d)::B(B)+R(C)
  • Tries
    • Try
      • B(E);XR(a)
      • Threat
        • S(H)
      • Vars
        • S(f);SBLOCK,XS(H)::S(I)
        • P(e);S_CUTB(d)::B(B)+R(C)
      • Refutation
        • P(c);P_SPINP(c),XB(E)
  • Actual
    • B(E);
    • Threat
      • S(H)
    • Vars
      • R(a);CHECK,S_CUTB(d)::B(B)+R(C)
      • S(f);SBLOCK,XS(H)::S(I)
      • P(e);S_CUTB(d)::B(B)+R(C)
      • S(f);N_SPINR(a),S_CUTB(d)::B(B)+R(C)
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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).