MESON Chess Problem Database

Problem Display
PID: 63717 (8/2p5/5p2/5B1K/rQn1bkP1/2Bp4/4PppP/4N3 w - - 0 1)

Tikkanen, Tapani

1st HM., Albrecht MT, 1984

8/2p5/5p2/5B1K/rQn1bkP1/2Bp4/4PppP/4N3

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Sxg2#
    • 1...Sd2
      • 2.Sxg2#
    • 1...Sa3
      • 2.Sxg2#
    • 1...Se3
      • 2.Sxd3#
    • 1...Sa5
      • 2.Sxg2#
    • 1...Se5
      • 2.Sxg2#
      • 2.Bd2#
    • 1...Sb6
      • 2.Sxg2#
    • 1...Sd6
      • 2.Sxg2#
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxe4#
      • 1...Ke3
        • 2.Qxe4#
      • 1...Bxf5
        • 2.Sxg2#
      • 1...Bf3
        • 2.Sxd3#
      • 1...Bd5
        • 2.Sxd3#
      • 1...Bc6
        • 2.Sxd3#
      • 1...Bb7
        • 2.Sxd3#
      • 1...Ba8
        • 2.Sxd3#
      • 1...Sb2
        • 2.Bd2#
      • 1...Sd2
        • 2.Bxd2#
      • 1...Sa3
        • 2.Bd2#
      • 1...Se3
        • 2.Qxc7#
      • 1...Sa5
        • 2.Bd2#
      • 1...Se5
        • 2.Bd2#
      • 1...Sb6
        • 2.Bd2#
      • 1...Sd6
        • 2.Bd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(e);P_SPINB(f)::S(A),XP(b)
    • S(e);P_SPINB(f),SBLOCK::S(A),XP(c)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E),XB(f)
    • Vars
      • K(g);P_SPINB(f),S_FLIGHT::QAR1(E),XB(f)
      • B(f);N_GUARD,XB(G)::S(A),XP(b)
      • B(f);N_GUARD,P_PINP(F)::S(A),XP(c)
      • B(f);N_GUARD::S(A),XP(c)
      • S(e);N_GUARD::B(D)
      • S(e);N_GUARD::B(D),XS(e)
      • S(e);N_GUARD,SBLOCK::QAB(E),XP(i)
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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).