MESON Chess Problem Database

Problem Display
PID: 7546 (4R1Kn/4Np2/5kB1/1nN3p1/6p1/5q2/7B/5Q2 w - - 0 1)

Kovacevic, Marjan

2nd HM., Kotelec, 1991

4R1Kn/4Np2/5kB1/1nN3p1/6p1/5q2/7B/5Q2

#2

7 + 7

4827 FIDE Album (1989-1991) 1997
133 The Problemist Supplement 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.Qxf2#
    • 1...Qf5
      • 2.Qxf5#
  • Tries
    • 1.Bd3?
      • threat
        • 2.Sd5#
      • 1...Qf5
        • 2.Qxf5#
      • 1...Sc7
        • 2.Qa1#
      • 1...Sc3!
    • 1.Be4?
      • threat
        • 2.Sd5#
      • 1...Sc3
        • 2.Qa6#
      • 1...Qf5
        • 2.Qxf5#
      • 1...Sc7!
    • 1.Bxf7?
      • threat
        • 2.Se4#
        • 2.Sd7#
      • 1...Qf4
        • 2.Sd7#
      • 1...g3
        • 2.Sd7#
      • 1...Sc3
        • 2.Sd7#
      • 1...Sd6
        • 2.Sd7#
      • 1...Sxf7!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Sd7#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...Qd1
        • 2.Se4#
      • 1...Qd5
        • 2.Sxd5#
      • 1...Qc6
        • 2.Be4#
      • 1...Qb7
        • 2.Be4#
      • 1...Qd3
        • 2.Bxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(a);OGATEB::QAR(A),XQ(a)
    • Q(a);OGATE::QAR1(A),XQ(a)
  • Tries
    • Try
      • B(D);
      • Threat
        • S(E)
      • Vars
        • Q(a);OGATE::QAR1(A),XQ(a)
        • S(c);N_GUARD::QAB(A)
      • Refutation
        • S(c);
    • Try
      • B(D);
      • Threat
        • S(E)
      • Vars
        • S(c);OGATE::QAR(A)
        • Q(a);OGATE::QAR1(A),XQ(a)
      • Refutation
        • S(c);
    • Try
      • B(D);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::S(C)
        • P(b);::S(C)
        • S(c);::S(C)
      • Refutation
        • S(g);XB(D)
  • Actual
    • B(D);N_PINQ(a)
    • Threat
      • S(C)
    • Vars
      • Q(a);OGATE,P_SPINQ(a),XB(D)::QAR1(A),XQ(a)
      • Q(a);N_GUARD::S(C)
      • Q(a);N_GUARD::S(E),XQ(a)
      • Q(a);OGATEB::QAR(A)+B(D)
      • Q(a);OGATEB::QAR(A)+B(D),XQ(a)
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).