MESON Chess Problem Database

Problem Display
PID: 92058 (3n1b2/2p5/N4p2/pP1k1B2/2N4P/1n1P1P2/1B4K1/7Q w - - 0 1)

Vosshenrich, Ansgar

Schach-Echo, 1989-1990

3n1b2/2p5/N4p2/pP1k1B2/2N4P/1n1P1P2/1B4K1/7Q

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Sxc7#
    • 1...Bd6
      • 2.Se3#
    • 1...Sc5
      • 2.Sxc7#
    • 1...Se6
      • 2.Be4#
    • 1...c5
      • 2.Sc7#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qe4#
      • 1...Sc5
        • 2.Sxc7#
      • 1...Sd2!
    • 1.Qh2?
      • threat
        • 2.Se3#
      • 1...Bc5
        • 2.Sxc7#
      • 1...Bh6!
    • 1.Qh3?
      • threat
        • 2.Be4#
      • 1...Sc5
        • 2.Sxc7#
      • 1...Sd2!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Sxc7#
      • 1...Bd6
        • 2.Se3#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Se6
        • 2.Be4#
      • 1...c5
        • 2.Sc7#
      • 1...c6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(g);SBLOCK::S(J),XP(e)
    • B(g);SBLOCK::S(F)
    • S(a);SBLOCK::S(J),XP(e)
    • S(f);SBLOCK::B(I)
    • P(e);SBLOCK::S(J)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(a);SBLOCK::S(J),XP(e)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • B(g);SBLOCK::S(J),XP(e)
      • Refutation
        • B(g);
    • Try
      • Q(A);
      • Threat
        • B(I)
      • Vars
        • S(a);SBLOCK::S(J),XP(e)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Threat
      • S(J),XP(e)
    • Vars
      • B(g);SBLOCK::S(F)
      • S(a);N_GUARD::QAR1(A),XS(a)
      • S(f);SBLOCK::B(I)
      • P(e);::S(J)
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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).