MESON Chess Problem Database

Problem Display
PID: 207429 (3R4/7q/6r1/1N1N4/pPpBpP2/K2k4/5Q2/8 w - - 0 1)

le Grand, Henk

Die Schwalbe, 1974

3R4/7q/6r1/1N1N4/pPpBpP2/K2k4/5Q2/8

#2

8 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Sdc3?
      • threat
        • 2.Qe2#
      • 1...Qh2
        • 2.Bf6#
      • 1...Rg2
        • 2.Bg7#
      • 1...Qh5!
    • 1.Bc3?
      • threat
        • 2.Qd2#
      • 1...Qh2
        • 2.Sf6#
      • 1...Rg2
        • 2.Se7#
      • 1...e3!
    • 1.Be3?
      • threat
        • 2.Qd2#
      • 1...Qh2
        • 2.Sf6#
      • 1...Rg2
        • 2.Se7#
      • 1...c3!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qc2#
      • 1...Qh2
        • 2.Bf6#
      • 1...Rg2
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • QAB1(A)
      • Vars
        • Q(f);N_GUARD::R(H)+B(D)
        • R(e);N_GUARD::R(H)+B(D)
      • Refutation
        • Q(f);
    • Try
      • B(D);
      • Threat
        • QAR1(A)
      • Vars
        • Q(f);N_GUARD::R(H)+S(G)
        • R(e);N_GUARD::R(H)+S(G)
      • Refutation
        • P(d);
    • Try
      • B(D);
      • Threat
        • QAR1(A)
      • Vars
        • Q(f);N_GUARD::R(H)+S(G)
        • R(e);N_GUARD::R(H)+S(G)
      • Refutation
        • P(c);
  • Actual
    • S(G);
    • Threat
      • QAB1(A)
    • Vars
      • Q(f);N_GUARD::R(H)+B(D)
      • R(e);N_GUARD::R(H)+B(D)
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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).