MESON Chess Problem Database

Problem Display
PID: 15193 (1B6/8/3p2p1/3N1pP1/B2k4/1P1N1P1Q/8/2K5 w - - 0 1)

Petkov, Petko Andonov

5th Comm., Arguelles JT, 1981

1B6/8/3p2p1/3N1pP1/B2k4/1P1N1P1Q/8/2K5

#2

9 + 4

3840 Petkov Selected Compositions 2000

SOLUTION

  • SOUND
  • Tries
    • 1.S5f4?
      • 1...Kc3
        • 2.Qh8#
      • 1...Ke3
        • 2.Ba7#
      • 1...d5!
    • 1.Ba7+?
      • 1...Kxd3
        • 2.Bb5#
        • 2.Qf1#
      • 1...Kxd5!
    • 1.Qh2?
      • 1...Kxd3
        • 2.Qd2#
      • 1...Kxd5
        • 2.Qxd6#
      • 1...f4!
    • 1.Qh4+?
      • 1...Kxd3
        • 2.Bb5#
        • 2.Qc4#
      • 1...Kxd5
        • 2.Qc4#
      • 1...f4!
    • 1.Qh8+?
      • 1...Kxd3
        • 2.Bb5#
      • 1...Kxd5!
  • Keys
    • 1.S3f4!
      • 1...Kc5
        • 2.Ba7#
      • 1...Ke5
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);S_FLIGHT::B(I)
      • Refutation
        • P(c);
    • Try
      • B(I);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(G)
    • Try
      • Q(E);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(C)::QAR1(E)
        • K(a);OGATEB,P-FLIGHT,XS(G)::QAR1(E),XP(c)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,XS(G)::QAB1(E)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::B(F)
      • Refutation
        • K(a);P-FLIGHT,XS(G)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::B(I)
      • K(a);P_SPINP(c),S_FLIGHT::QAB(E)
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).