MESON Chess Problem Database

Problem Display
PID: 82335 (8/5Bpq/1R2p3/3p4/1NkB1R2/n1P1p2p/P1p2b1Q/2K4b w - - 0 1)

Ahues, Herbert Siegfried Oskar

Freie Presse, 1991

8/5Bpq/1R2p3/3p4/1NkB1R2/n1P1p2p/P1p2b1Q/2K4b

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Rc6#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sb2#
        • 2.Se5#
      • 1...Qxd3
        • 2.Rb4#
      • 1...Qe4
        • 2.Sb2#
      • 1...Qf5
        • 2.Sb2#
      • 1...Qh5
        • 2.Sb2#
      • 1...e5
        • 2.Sb2#
        • 2.Sxe5#
      • 1...Kxd3!
    • 1.Rxf2?
      • threat
        • 2.Qc7#
      • 1...Sb5
        • 2.Rc6#
      • 1...e5!
    • 1.Rf3?
      • threat
        • 2.Qc7#
      • 1...Sb5
        • 2.Rc6#
      • 1...e5
        • 2.Bxd5#
      • 1...Bg3!
    • 1.Rf5?
      • threat
        • 2.Qc7#
      • 1...Bg3
        • 2.Qe2#
      • 1...Sb5
        • 2.Rc6#
      • 1...e5!
    • 1.Rf6?
      • threat
        • 2.Qc7#
      • 1...Sb5
        • 2.Rc6#
      • 1...e5
        • 2.Rfc6#
      • 1...Bg3!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qc7#
      • 1...Bg3
        • 2.Qe2#
      • 1...Sb5
        • 2.Rc6#
      • 1...e5
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);SBLOCK::R(H)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(k);SBLOCK,XS(E)::R1(H)
        • Q(k);::S(E)
      • Refutation
        • K(g);S_FLIGHT,XS(E)
    • Try
      • R(G);XB(c)
      • Threat
        • QAR(C)
      • Vars
        • S(d);SBLOCK::R(H)
      • Refutation
        • P(i);P_SPINP(h)
    • Try
      • R(G);
      • Threat
        • QAR(C)
      • Vars
        • S(d);SBLOCK::R(H)
        • P(i);OGATE,P_SPINP(h)::B(I),XP(h)
      • Refutation
        • B(c);
    • Try
      • R(G);
      • Threat
        • QAR(C)
      • Vars
        • B(c);OGATE::QAB(C)
        • S(d);SBLOCK::R(H)
      • Refutation
        • P(i);P_SPINP(h)
    • Try
      • R(G);
      • Threat
        • QAR(C)
      • Vars
        • S(d);SBLOCK::R(H)
        • P(i);OGATE,P_SPINP(h)::R(G)
      • Refutation
        • B(c);
  • Actual
    • R(G);
    • Threat
      • QAR(C)
    • Vars
      • B(c);OGATE::QAB(C)
      • S(d);SBLOCK::R(H)
      • P(i);OGATE,P_SPINP(h)::B(I),XP(h)
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).