MESON Chess Problem Database

Problem Display
PID: 46397 (4K3/2p2p2/3kB3/8/3P4/8/8/4Q3 w - - 0 1)

Glisic, Dejan I

StrateGems, 2003

4K3/2p2p2/3kB3/8/3P4/8/8/4Q3

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...c6
      • 2.Qe5#
  • Tries
    • 1.Bd5?
      • threat
        • 2.Qe5#
      • 1...f6
        • 2.Qe6#
      • 1...Kxd5!
    • 1.Bd7?
      • threat
        • 2.Qe5#
      • 1...f6
        • 2.Qe6#
      • 1...Kd5!
    • 1.Qg3+?
      • 1...Kxe6
        • 2.Qe5#
      • 1...Kc6!
    • 1.Qb4+?
      • 1...Kc6
        • 2.d5#
      • 1...c5
        • 2.Qb6#
      • 1...Kxe6!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qd5#
      • 1...Kc6
        • 2.Qa6#
      • 1...Kxe6
        • 2.Qe5#
      • 1...fxe6
        • 2.Qc5#
      • 1...c5
        • 2.Qb6#
      • 1...c6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB1(A)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAB1(A)
      • Vars
        • P(c);N_GUARD::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • B(C);
      • Threat
        • QAB1(A)
      • Vars
        • P(c);N_GUARD::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(C)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::P(B)
        • P(b);N_GUARD,P_SPINP(b)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
      • K(a);P-FLIGHT,XB(C)::QAR1(A)
      • P(c);SBLOCK,XB(C)::QAB1(A)
      • P(b);N_GUARD::QAR2(A)
      • P(b);SBLOCK::QAB1(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).