MESON Chess Problem Database

Problem Display
PID: 73367 (1KQ5/pN6/3p4/RnPkp3/8/1r1P4/B1Nn4/6q1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Hannoversche Allgemeine Zeitung, 1993

1KQ5/pN6/3p4/RnPkp3/8/1r1P4/B1Nn4/6q1

#2

8 + 8

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Bxb3#
    • 1...Sf1
      • 2.Bxb3#
    • 1...Sf3
      • 2.Bxb3#
    • 1...Se4
      • 2.Bxb3#
    • 1...Sd4
      • 2.Sb4#
  • Tries
    • 1.Bxb3+?
      • 1...Sc4
        • 2.Bxc4#
      • 1...Sxb3!
    • 1.Qe6+?
      • 1...Kc6
        • 2.Ra6#
      • 1...Kxe6!
  • Keys
    • 1.Sd8!
      • threat
        • 2.Qc6#
      • 1...Sa3+
        • 2.Qb7#
      • 1...Sc3+
        • 2.Qb7#
      • 1...Sd4+
        • 2.Sb4#
      • 1...Sc7+
        • 2.Qb7#
      • 1...Qxc5
        • 2.Qe6#
      • 1...e4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::B(A),XR(c)
    • S(d);P_PINS(F),SBLOCK::S(B)
  • Tries
    • Try
      • B(A);CHECK,XR(c)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::B(A),XS(b)
      • Refutation
        • S(b);XB(A)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);N_SPINR(c),P_SPINP(g),S_FLIGHT::R(D)
      • Refutation
        • K(e);S_FLIGHT,XQ(H)
  • Actual
    • S(F);
    • Threat
      • QAB1(H)
    • Vars
      • S(d);CHECK::QAB(H)
      • S(d);CHECK,SBLOCK::S(B)
      • Q(a);SBLOCK,XP(E)::QAB1(H)
      • P(f);OGATEB::QAR2(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).