MESON Chess Problem Database

Problem Display
PID: 51725 (8/5Q2/8/4p1p1/6p1/1N1k2K1/P2BN2p/7R w - - 0 1)

Kotevski, Janko

6th Place, Liga Problemista, 1998-1999

8/5Q2/8/4p1p1/6p1/1N1k2K1/P2BN2p/7R

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe2
      • 2.Qc4#
      • 2.Qf1#
    • 1...Ke4
      • 2.Sc5#
  • Tries
    • 1.Sec1+?
      • 1...Ke4
        • 2.Re1#
      • 1...Kc2!
    • 1.Rc1?
      • threat
        • 2.Qc4#
      • 1...Kxe2
        • 2.Qc4#
        • 2.Qf1#
      • 1...Ke4
        • 2.Sc5#
      • 1...h1S+!
    • 1.Qd5+?
      • 1...Kxe2
        • 2.Sc1#
        • 2.Re1#
        • 2.Qc4#
        • 2.Qe4#
        • 2.Qb5#
      • 1...Kc2!
    • 1.Qc7?
      • 1...Kxe2
        • 2.Qc4#
      • 1...e4
        • 2.Sec1#
      • 1...Ke4!
    • 1.Qd7+?
      • 1...Kxe2
        • 2.Sc1#
        • 2.Re1#
        • 2.Qb5#
      • 1...Kc4
        • 2.Rc1#
      • 1...Ke4
        • 2.Sc3#
        • 2.Sc5#
      • 1...Kc2!
  • Keys
    • 1.Qf1!
      • 1...Kc2
        • 2.Qb1#
      • 1...Kc4
        • 2.Sf4#
      • 1...Ke4
        • 2.Sc3#
      • 1...e4
        • 2.Sed4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::S(E)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::R(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • QAB1(G)
      • Vars
        • K(b);S_FLIGHT::S(E)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(G);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(b);S_FLIGHT,XS(D)::QAB(G)
        • P(d);SBLOCK::S(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);S_FLIGHT::R(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(b);S_FLIGHT::QAB1(G)
      • K(b);S_FLIGHT::QAB(G)+S(D)
      • K(b);S_FLIGHT::S(D)
      • P(d);SBLOCK::QAB(G)+S(D)
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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).