MESON Chess Problem Database

Problem Display
PID: 56796 (8/1N3p2/K3p3/3p4/2pk1B2/3P4/3Q4/8 w - - 0 1)

Leroux, G

Bulletin de la FFE, 1925

8/1N3p2/K3p3/3p4/2pk1B2/3P4/3Q4/8

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...cxd3
      • 2.Qb4#
    • 1...c3
      • 2.Qe3#
    • 1...e5
      • 2.Be3#
  • Tries
    • 1.Sc5?
      • 1...cxd3
        • 2.Qb4#
      • 1...f5
        • 2.Sxe6#
      • 1...c3
        • 2.Sb3#
        • 2.Qe3#
        • 2.Qf2#
      • 1...e5
        • 2.Be3#
      • 1...f6
        • 2.Sxe6#
      • 1...Kxc5!
    • 1.Qb2+?
      • 1...Kxd3
        • 2.Sc5#
      • 1...c3!
  • Keys
    • 1.Sd8!
      • 1...Kc5
        • 2.d4#
      • 1...cxd3
        • 2.Qb4#
      • 1...f5
        • 2.Sxe6#
      • 1...c3
        • 2.Qe3#
      • 1...e5
        • 2.Be3#
      • 1...f6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB,P_SPINP(a),SBLOCK,XP(B)::QAR2(A)
    • P(a);SBLOCK::QAB1(A)
    • P(d);SBLOCK::B(C)
  • Tries
    • Try
      • S(E);
      • Vars
        • P(a);OGATEB,P_SPINP(a),XP(B)::QAR2(A)
        • P(e);N_GUARD::S(E),XP(d)
        • P(d);SBLOCK::B(C)
      • Refutation
        • K(b);S_FLIGHT,XS(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(B)::S(E)
      • Refutation
        • P(a);P_SPINP(a)
  • Actual
    • S(E);
    • Vars
      • K(b);OGATE,S_FLIGHT::P(B)
      • P(a);OGATEB,P_SPINP(a),SBLOCK,XP(B)::QAR2(A)
      • P(e);N_GUARD::S(E),XP(d)
      • P(a);SBLOCK::QAB1(A)
      • P(d);SBLOCK::B(C)
HTML5 logo

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).