MESON Chess Problem Database

Problem Display
PID: 82218 (1R2b1nQ/8/2N2rp1/3N3r/p1P2P2/k6p/1p6/bK1B4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Roscher MT, 1978

1R2b1nQ/8/2N2rp1/3N3r/p1P2P2/k6p/1p6/bK1B4

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rhf5
      • 2.Qxh3#
    • 1...Rxf4
      • 2.Qc3#
    • 1...Rff5
      • 2.Qc3#
    • 1...Rxc6
      • 2.Qc3#
    • 1...Rd6
      • 2.Qc3#
    • 1...Re6
      • 2.Qc3#
    • 1...Rf7
      • 2.Qc3#
    • 1...Rf8
      • 2.Qc3#
  • Tries
    • 1.Scb4?
      • threat
        • 2.Sc2#
      • 1...Rb6
        • 2.Qc3#
      • 1...Bb5!
    • 1.Sd4?
      • threat
        • 2.Sc2#
      • 1...Bb5
        • 2.Sxb5#
      • 1...Rb6!
    • 1.Qxf6?
      • threat
        • 2.Qc3#
        • 2.Qd6#
      • 1...Rxd5
        • 2.Qc3#
      • 1...Re5
        • 2.Qd6#
      • 1...Sxf6!
  • Keys
    • 1.Sdb4!
      • threat
        • 2.Sc2#
      • 1...Rb5
        • 2.Qxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(f);OGATE::QAB1(H),XP(d)
    • R(g);OGATE,XP(D)::QAR2(H)
    • R(g);OGATE::QAR2(H)
    • R(g);OGATE,XS(F)::QAR2(H)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • R(g);OGATE::QAR2(H)
      • Refutation
        • B(i);
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • B(i);N_GUARD::S(F),XB(i)
      • Refutation
        • R(g);
    • Try
      • Q(H);XR(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(f);XS(E)::QAR2(H)
        • R(f);::QAB(H)
      • Refutation
        • S(j);XQ(H)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • R(f);OGATE::QAB1(H),XP(d)
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).