MESON Chess Problem Database

Problem Display
PID: 279786 (5B2/4Q3/8/8/4Bk2/2P4P/8/4K3 w - - 0 1)

Petrasinovic, Petrasin

Sachmatija, 2024

5B2/4Q3/8/8/4Bk2/2P4P/8/4K3

#2

6 + 1

5454 Near Snap 2025

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Bh6#
  • Tries
    • 1.Kf1?
      • 1...Ke3
        • 2.Bh6#
      • 1...Kg3!
    • 1.Bg7?
      • 1...Ke3
        • 2.Bh6#
      • 1...Kg3!
    • 1.Qh4+?
      • 1...Ke3
        • 2.Bc5#
        • 2.Bh6#
      • 1...Ke5!
    • 1.Qe5+?
      • 1...Ke3
        • 2.Bc5#
        • 2.Bh6#
      • 1...Kxe5!
    • 1.Qe6?
      • 1...Ke3
        • 2.Bh6#
      • 1...Kg5
        • 2.Qh6#
      • 1...Kg3!
  • Keys
    • 1.Qh7!
      • 1...Ke3
        • 2.Bh6#
      • 1...Kg3
        • 2.Bd6#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kg5
        • 2.Qh6#

Anticipated by 262909(2008), 266069(2017), 268836(2022)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::B(F)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(F)
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::B(F)
      • K(a);N_GUARD,S_FLIGHT::QAR1(E)
      • K(a);N_GUARD,S_FLIGHT::QAB1(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).