MESON Chess Problem Database

Problem Display
PID: 176436 (1r3bK1/4p1pB/3pP3/8/8/2B5/1pR5/bkN5 w - - 0 1)

Giegold, Fritz Emil

Schach-Echo, 1967

1r3bK1/4p1pB/3pP3/8/8/2B5/1pR5/bkN5

#2

6 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...bxc1Q
      • 2.Rb2#
    • 1...bxc1S
      • 2.Rb2#
    • 1...bxc1B
      • 2.Rb2#
    • 1...bxc1R
      • 2.Rb2#
  • Tries
    • 1.Re2+?
      • 1...Kxc1
        • 2.Re1#
      • 1...g6!
    • 1.Rf2+?
      • 1...Kxc1
        • 2.Rf1#
      • 1...g6!
    • 1.Rg2+?
      • 1...Kxc1
        • 2.Rg1#
      • 1...g6!
    • 1.Rh2+?
      • 1...Kxc1
        • 2.Rh1#
      • 1...g6!
  • Keys
    • 1.Bxg7!
      • threat
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rc5#
        • 2.Rc6#
        • 2.Rc7#
        • 2.Rc8#
      • 1...Bxg7+
        • 2.Rc8#
      • 1...bxc1Q
        • 2.Rb2#
      • 1...bxc1S
        • 2.Rb2#
      • 1...bxc1B
        • 2.Rb2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
        • 2.Rg2#
        • 2.Rh2#
      • 1...bxc1R
        • 2.Rb2#
      • 1...Rb3
        • 2.Rc3#
      • 1...Rb4
        • 2.Rc4#
      • 1...Rb5
        • 2.Rc5#
      • 1...Rc8
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rc5#
        • 2.Rc6#
        • 2.Rc7#
        • 2.Rxc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(c);SBLOCK,XS(A)::B(E)+R(B),DCHECK
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(A)::R(B)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(A)::R(B)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(A)::R(B)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(A)::R(B)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • B(C);XP(f)
    • Threat
      • DUALS(6)
    • Vars
      • B(h);CHECK,XB(C)::B(E)+R(B)
      • P(c);SBLOCK,XS(A)::B(E)+R(B),DCHECK
      • R(g);::B(E)+R(B)
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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).