MESON Chess Problem Database

Problem Display
PID: 140844 (b7/2Q4N/5K2/2p5/3pkp2/3pp1p1/3nrbr1/6n1 w - - 0 1)

Stojanovic, Borislav (aka Bota)

Liga Problemista, 1989/2

b7/2Q4N/5K2/2p5/3pkp2/3pp1p1/3nrbr1/6n1

#2

3 + 13

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Sg5#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Bb7
      • 2.Qxb7#
    • 1...f3
      • 2.Qe5#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Sg5#
      • 1...Kf3
        • 2.Sg5#
      • 1...Sgf3
        • 2.Qf5#
      • 1...Sdf3
        • 2.Qf5#
      • 1...f3
        • 2.Qf5#
      • 1...Sh3!
    • 1.Qe7+?
      • 1...Kd5
        • 2.Qe6#
      • 1...Kf3!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qxa8#
      • 1...Kf3
        • 2.Sg5#
      • 1...Kd5
        • 2.Qe6#
      • 1...Bd5
        • 2.Sg5#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...f3
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(m);SBLOCK::S(C)
    • B(m);N_GUARD::QAB(B),XB(m)
    • P(k);SBLOCK::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • S(C)
      • Vars
        • K(j);S_FLIGHT::S(C)
        • S(a);SBLOCK::QAB1(B)
        • S(b);SBLOCK::QAB1(B)
        • P(k);::QAB1(B)
      • Refutation
        • S(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(j);S_FLIGHT::QAB1(B)
      • Refutation
        • K(j);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB(B),XB(m)
    • Vars
      • K(j);S_FLIGHT::S(C)
      • K(j);S_FLIGHT::QAB1(B)
      • B(m);SBLOCK::S(C)
      • B(m);N_GUARD::QAB(B),XB(m)
      • P(k);::QAB1(B)
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).