MESON Chess Problem Database

Problem Display
PID: 114866 (4B3/8/3nK3/1Nk5/2Np4/n7/8/2R1Q3 w - - 0 1)

Archambault, A

La Presse, 1919

4B3/8/3nK3/1Nk5/2Np4/n7/8/2R1Q3

#2

6 + 4

6490 yacpdb 2009
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Sbxd6?
      • threat
        • 2.Se4#
        • 2.Sb7#
      • 1...Sxc4
        • 2.Qa5#
      • 1...Sc2
        • 2.Qa5#
      • 1...d3!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qxa3#
      • 1...Saxc4
        • 2.Sxd6#
      • 1...Saxb5
        • 2.Sxd6#
      • 1...Sdxc4
        • 2.Sxa3#
      • 1...Sdxb5
        • 2.Sxa3#
      • 1...Sxe8
        • 2.Scxa3#
      • 1...Sc2
        • 2.Sbxd6#
      • 1...Sb1
        • 2.Sbxd6#

This anticipates 115889(1937)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);XS(d)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,P_SPINS(a),XS(C)::QAR2(B)
        • S(a);N_GUARD::QAR2(B)
      • Refutation
        • P(b);
  • Actual
    • Q(B);
    • Threat
      • QAB(B),XS(a)
    • Vars
      • S(a);N_GUARD,P_SPINS(a),XS(C)::QAR(B)+S(D),XS(d)
      • S(a);N_GUARD,P_SPINS(a),XS(D)::R(A)+S(C),XS(d)
      • S(d);N_GUARD,P_SPINS(d),XS(C)::QAR(B)+S(D),XS(a)
      • S(d);N_GUARD,P_SPINS(d),XS(D)::R(A)+S(C),XS(a)
      • S(d);N_GUARD,XB(F)::R(A)+S(C),XS(a)
      • S(a);N_GUARD::QAR(B)+S(D),XS(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).