MESON Chess Problem Database

Problem Display
PID: 256558 (3NR3/bpB2N2/5K1p/3p4/3k1pp1/1Q2p3/3pp1q1/8 w - - 0 1)

Kisis, Imants J

6th HM., Problem (Zagreb), 1973

3NR3/bpB2N2/5K1p/3p4/3k1pp1/1Q2p3/3pp1q1/8

#2

6 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bb6
      • 2.Bxb6#
    • 1...Bb8
      • 2.Bb6#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Se6#
      • 1...Kc5
        • 2.Qc3#
      • 1...Qe4!
    • 1.Ba5?
      • threat
        • 2.Qc3#
      • 1...Kc5
        • 2.Qb4#
      • 1...d1S!
    • 1.Qc2?
      • threat
        • 2.Se6#
        • 2.Be5#
      • 1...Bb8
        • 2.Se6#
        • 2.Bb6#
      • 1...Qe4!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qb4#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc5
        • 2.Se6#
      • 1...Bc5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(j);N_GUARD::B(C),XB(j)
    • B(j);N_GUARD::B(C)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(E)
      • Vars
        • K(e);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • Q(c);
    • Try
      • B(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(e);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • Q(c);
  • Actual
    • S(D);
    • Threat
      • QAR2(A)
    • Vars
      • K(e);N_GUARD,P-FLIGHT::QAB1(A)
      • K(e);N_GUARD,S_FLIGHT::S(E)
      • B(j);SBLOCK::QAR1(A)
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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).