MESON Chess Problem Database

Problem Display
PID: 243297 (8/8/2p3B1/6N1/KnkB4/4P3/2p5/4b2Q w - - 0 1)

Andersen, Idon Bruno Hovedskou

Skakbladet, 1952

8/8/2p3B1/6N1/KnkB4/4P3/2p5/4b2Q

#2

6 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Qxc6#
    • 1...Sd3
      • 2.Bf7#
    • 1...Sd5
      • 2.Qf1#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Se5#
      • 1...Bg3
        • 2.Sd2#
      • 1...Sd3
        • 2.Bf7#
      • 1...Kd5!
    • 1.Sf7?
      • threat
        • 2.Se5#
        • 2.Sd6#
      • 1...Sd3
        • 2.Sd6#
      • 1...Bg3!
    • 1.Bf7+?
      • 1...Sd5
        • 2.Qf1#
      • 1...Kd3!
    • 1.Qf1+?
      • 1...Sd3
        • 2.Bf7#
        • 2.Qf7#
      • 1...Kd5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sd6#
      • 1...Kd3
        • 2.Qf1#
      • 1...Kd5
        • 2.Bf7#
      • 1...Bg3
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD::QAR2(A),XP(e)
    • S(c);N_GUARD,SBLOCK::B(F)
    • S(c);N_GUARD,SBLOCK::QAB(A)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • B(a);N_GUARD::S(E)
        • S(c);N_GUARD,SBLOCK::B(F)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::S(E)
      • Refutation
        • B(a);
    • Try
      • B(F);CHECK
      • Vars
        • S(c);P_SPINS(c)::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(d);S_FLIGHT::QAB(A)
      • K(d);S_FLIGHT::B(F)
      • B(a);N_GUARD::S(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).