MESON Chess Problem Database

Problem Display
PID: 133807 (b7/8/5b2/3p4/2p1kPK1/7p/2P2Qn1/3N4 w - - 0 1)

Rusenescu, Eugen

14th Place, 03. WCCT, 1984-1988

b7/8/5b2/3p4/2p1kPK1/7p/2P2Qn1/3N4

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bd4
      • 2.Qf3#
    • 1...Bh4
      • 2.Sc3#
    • 1...Bg5
      • 2.Sc3#
    • 1...Be7
      • 2.Sc3#
    • 1...Bd8
      • 2.Sc3#
    • 1...Se1
      • 2.Qe3#
    • 1...Se3+
      • 2.Qxe3#
    • 1...Sxf4
      • 2.Qe3#
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qe3#
    • 1...d4
      • 2.Qf3#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Sf2#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Sxf4
        • 2.Qe3#
      • 1...Bh4
        • 2.Sc3#
      • 1...d4
        • 2.Qf5#
      • 1...Bd4!
    • 1.Qb6?
      • threat
        • 2.Sf2#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Sxf4
        • 2.Qe3#
      • 1...Bd4
        • 2.Qg6#
      • 1...Bh4
        • 2.Sc3#
      • 1...d4!
    • 1.Qe2+?
      • 1...Se3+
        • 2.Qxe3#
      • 1...Kd4!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Sf2#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Sxf4
        • 2.Qe3#
      • 1...d4
        • 2.Qxa8#
      • 1...Bd4
        • 2.Qh7#
      • 1...Bh4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • B(f);N_GUARD::S(A),XB(f)
    • B(f);SBLOCK::QAB1(C)
    • B(f);N_GUARD::S(A)
    • S(a);N_GUARD::QAR1(C)
    • S(a);CHECK,N_GUARD::QAR1(C),XS(a)
    • P(e);SBLOCK::QAB1(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • S(A)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(C),XS(a)
        • S(a);N_GUARD,XP(D)::QAR1(C)
        • B(f);N_GUARD::S(A)
        • P(e);OGATE,SBLOCK::QAB1(C)
      • Refutation
        • B(f);
    • Try
      • Q(C);
      • Threat
        • S(A)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(C),XS(a)
        • S(a);N_GUARD,XP(D)::QAR1(C)
        • B(f);OGATE,SBLOCK::QAB(C)
        • B(f);N_GUARD::S(A)
      • Refutation
        • P(e);
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);CHECK,N_GUARD,P_SPINS(a)::QAR1(C),XS(a)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • S(A)
    • Vars
      • S(a);CHECK,N_GUARD::QAR1(C),XS(a)
      • S(a);N_GUARD,XP(D)::QAR1(C)
      • P(e);OGATEB,SBLOCK::QAB(C),XB(g)
      • B(f);SBLOCK::QAB(C)
      • B(f);N_GUARD::S(A)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).