MESON Chess Problem Database

Problem Display
PID: 228746 (K2R3b/6B1/2p2r2/3pn3/N2kNpp1/8/4Q3/n7 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach-Aktiv, 2008

K2R3b/6B1/2p2r2/3pn3/N2kNpp1/8/4Q3/n7

#2

6 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf2?
      • threat
        • 2.Qe4#
      • 1...Rd6
        • 2.Qd3#
      • 1...Sd7!
    • 1.Sg3?
      • threat
        • 2.Qe4#
      • 1...Sd7
        • 2.Sf5#
      • 1...Rd6
        • 2.Sf5#
      • 1...fxg3!
    • 1.Sg5?
      • threat
        • 2.Qe4#
      • 1...Sd7
        • 2.Se6#
      • 1...Rd6!
  • Keys
    • 1.Sec5!
      • threat
        • 2.Qe4#
      • 1...Sd7
        • 2.Se6#
      • 1...Rd6
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • R(h);N_SPINP(e),P_SPINS(f)::QAR1(A)
      • Refutation
        • S(f);N_SPINP(e),P_SPINR(h)
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(f);N_SPINP(e),P_SPINR(h)::S(C)
        • R(h);N_GUARD,N_SPINP(e),P_SPINS(f)::S(C)
      • Refutation
        • P(c);XS(C)
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(f);N_SPINP(e),P_SPINR(h)::S(C)
      • Refutation
        • R(h);N_SPINP(e),P_SPINS(f)
  • Actual
    • S(C);
    • Threat
      • QAR1(A)
    • Vars
      • S(f);N_SPINP(e),P_SPINR(h)::S(C)
      • R(h);N_SPINP(e),P_SPINS(f)::QAR1(A)
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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).