MESON Chess Problem Database

Problem Display
PID: 229941 (8/7B/Q3N2B/3ppP2/3bk3/5r1b/1p3nP1/1K1N2n1 w - - 0 1)

Bottger, Horst

Freie Presse, 1970

8/7B/Q3N2B/3ppP2/3bk3/5r1b/1p3nP1/1K1N2n1

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sxf2#
    • 1...Rf4
      • 2.Sg5#
    • 1...Be3
      • 2.Sc3#
  • Tries
    • 1.Qe2+?
      • 1...Re3
        • 2.Sxf2#
      • 1...Be3
        • 2.Sc3#
      • 1...Sxe2!
    • 1.Qc4?
      • threat
        • 2.Sc5#
      • 1...Sd3
        • 2.Sc3#
      • 1...dxc4!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Sc5#
      • 1...Kd3
        • 2.Qc2#
      • 1...Rc3
        • 2.Sxf2#
      • 1...Sd3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(d);N_GUARD,S_CUTB(f)::S(B),XS(c)
    • R(d);SBLOCK::S(F)
    • B(f);N_GUARD,S_CUTR(d)::S(B)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • R(d);P_SPINR(d)::S(B),XS(c)
        • B(f);P_SPINB(f)::S(B)
      • Refutation
        • S(a);XQ(E)
    • Try
      • Q(E);P_PINB(f)
      • Threat
        • S(F)
      • Vars
        • S(c);S_CUTR(d)::S(B)
      • Refutation
        • P(h);N_SPINB(f),XQ(E)
  • Actual
    • Q(E);P_PINB(f)
    • Threat
      • S(F)
    • Vars
      • K(g);N_SPINB(f),S_FLIGHT::QAB1(E)
      • R(d);N_GUARD::S(B),XS(c)
      • S(c);SBLOCK,S_CUTR(d)::S(B)
HTML5 logo

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).