MESON Chess Problem Database

Problem Display
PID: 261929 (kBN5/P1p5/B7/2K5/8/8/8/8 w - - 0 1)

Froberg, Johan Hilding Laurentius

Problemnoter, 1963

kBN5/P1p5/B7/2K5/8/8/8/8

#2

5 + 2

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...c6
      • 2.Sb6#
  • Tries
    • 1.Kb4?
      • 1...c6
        • 2.Sb6#
      • 1...c5+!
    • 1.Kd4?
      • 1...c6
        • 2.Sb6#
      • 1...c5+!
    • 1.Kb5?
      • 1...c5
        • 2.Sb6#
      • 1...c6+!
    • 1.Kd5?
      • 1...c5
        • 2.Sb6#
      • 1...c6+!
    • 1.Bb5?
      • threat
        • 2.Bc6#
      • 1...c6
        • 2.Bxc6#
      • 1...Kb7!
  • Keys
    • 1.Kc4!
      • 1...c5
        • 2.Sb6#
      • 1...c6
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::S(E)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • P(a);N_GUARD::S(E)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);S_FLIGHT
      • Vars
        • P(a);N_GUARD::S(E)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(a);N_GUARD::S(E)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(a);N_GUARD::S(E)
      • Refutation
        • P(a);CHECK
    • Try
      • B(B);
      • Threat
        • B(B)
      • Vars
        • P(a);::B(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • P(a);N_GUARD::S(E)
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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).