MESON Chess Problem Database

Problem Display
PID: 225467 (2K3n1/2p5/R1N5/p2kPBn1/3P4/3R4/3N4/8 w - - 0 1)

Formanek, Bedrich

Praca, 1953

2K3n1/2p5/R1N5/p2kPBn1/3P4/3R4/3N4/8

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Be4#
    • 1...Sf6
      • 2.Se7#
    • 1...Sh6
      • 2.Se7#
    • 1...Se7+
      • 2.Sxe7#
    • 1...a4
      • 2.Sb4#
  • Tries
    • 1.Kb7?
      • threat
        • 2.Rxa5#
      • 1...Se6
        • 2.Be4#
      • 1...a4
        • 2.Sb4#
        • 2.Ra5#
      • 1...Se4!
    • 1.Kd7?
      • threat
        • 2.Rxa5#
      • 1...Se4
        • 2.Bxe4#
        • 2.Be6#
      • 1...Se6
        • 2.Be4#
        • 2.Bxe6#
      • 1...a4
        • 2.Sb4#
        • 2.Ra5#
      • 1...Sf6+!
  • Keys
    • 1.Bg6!
      • 1...Se7+
        • 2.Sxe7#
      • 1...Ke6
        • 2.d5#
      • 1...Sf6
        • 2.Se7#
      • 1...Sf3
        • 2.Bf7#
      • 1...Sh3
        • 2.Bf7#
      • 1...Se4
        • 2.Bf7#
      • 1...Se6
        • 2.Be4#
      • 1...Sf7
        • 2.Bxf7#
      • 1...Sh7
        • 2.Bf7#
      • 1...Sh6
        • 2.Se7#
      • 1...a4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,SBLOCK::B(E)
    • S(e);N_GUARD::S(G)
    • S(e);CHECK,N_GUARD::S(G),XS(e)
    • P(a);N_GUARD::S(G)
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Threat
        • R(F),XP(a)
      • Vars
        • S(c);N_GUARD,SBLOCK::B(E)
      • Refutation
        • S(c);
    • Try
      • K(H);S_FLIGHT
      • Threat
        • R(F),XP(a)
      • Refutation
        • S(e);CHECK
  • Actual
    • B(E);
    • Vars
      • S(e);CHECK,N_GUARD::S(G),XS(e)
      • K(b);OGATE,S_FLIGHT::P(C)
      • S(e);N_GUARD::S(G)
      • S(c);N_GUARD::B(E)
      • S(c);N_GUARD,SBLOCK::B(E)
      • S(c);N_GUARD::B(E),XS(c)
      • P(a);N_GUARD::S(G)
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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).