MESON Chess Problem Database

Problem Display
PID: 258561 (8/6pQ/1P6/bNp2n2/2B1kPKn/B7/5p2/5N2 w - - 0 1)

Oltean, Dorin

Buletin Problemistic, 1987

8/6pQ/1P6/bNp2n2/2B1kPKn/B7/5p2/5N2

#2

8 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qxf5#
    • 1...Sf3
      • 2.Qxf5#
    • 1...Sg6
      • 2.Qh1#
    • 1...g5
      • 2.Qb7#
    • 1...g6
      • 2.Qb7#
  • Tries
    • 1.Bc1?
      • threat
        • 2.Sg3#
      • 1...Sg6
        • 2.Qh1#
      • 1...g6
        • 2.Qb7#
      • 1...Bd2!
    • 1.Bb2?
      • threat
        • 2.Sd6#
      • 1...Sg6
        • 2.Qh1#
      • 1...g6
        • 2.Qb7#
      • 1...Bc3!
    • 1.Qg6?
      • threat
        • 2.Qc6#
        • 2.Qe6#
      • 1...Bc3
        • 2.Qc6#
      • 1...Sf3
        • 2.Qxf5#
        • 2.Qc6#
      • 1...Sxg6!
  • Keys
    • 1.Bxc5!
      • threat
        • 2.Sg3#
        • 2.Sd6#
      • 1...Sg6
        • 2.Qh1#
      • 1...g6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD::QAB1(H),XS(f)
    • S(c);N_SPINS(f),OGATE::QAB(H)
    • P(g);OGATE::QAB(H)
    • P(g);N_SPINS(f),OGATE::QAB(H)
  • Tries
    • Try
      • B(B);
      • Threat
        • S(A)
      • Vars
        • S(c);N_SPINS(f),OGATE::QAB(H)
        • P(g);N_SPINS(f),OGATE::QAB(H)
      • Refutation
        • B(d);
    • Try
      • B(B);
      • Threat
        • S(F)
      • Vars
        • S(c);N_SPINS(f),OGATE::QAB(H)
        • P(g);N_SPINS(f),OGATE::QAB(H)
      • Refutation
        • B(d);
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);::QAB(H)
      • Refutation
        • S(c);N_SPINS(f),XQ(H)
  • Actual
    • B(B);XP(e)
    • Threat
      • DUALS(2)
    • Vars
      • S(c);N_SPINS(f),OGATE::QAB(H)
      • P(g);N_SPINS(f),OGATE::QAB(H)
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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).