MESON Chess Problem Database

Problem Display
PID: 268594 (2R5/p7/2N5/2Bp4/2P5/2kNR3/P7/b2K4 w - - 0 1)

Moen, Kabe

Best Problems, 2023

2R5/p7/2N5/2Bp4/2P5/2kNR3/P7/b2K4

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Sde5#
    • 1...dxc4
      • 2.Bb4#
      • 2.Bd4#
  • Tries
    • 1.Sc1+?
      • 1...Kb2
        • 2.Rb3#
        • 2.Rb8#
      • 1...Kxc4!
    • 1.Sdb4+?
      • 1...Kb2
        • 2.Rb3#
      • 1...Kxc4!
    • 1.Bxa7?
      • 1...Kxc4
        • 2.Sd4#
      • 1...dxc4
        • 2.Bd4#
      • 1...Bb2
        • 2.Sde5#
      • 1...d4!
  • Keys
    • 1.Sxa7!
      • 1...Kxc4
        • 2.Bb6#
      • 1...dxc4
        • 2.Sb5#
      • 1...d4
        • 2.Bb4#
      • 1...Bb2
        • 2.Se5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::R(D)+S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(b);P-FLIGHT,XP(E)
    • Try
      • S(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(D)
      • Refutation
        • K(b);P-FLIGHT,XP(E)
    • Try
      • B(F);XP(d)
      • Vars
        • K(b);P-FLIGHT,XP(E)::R(H)+S(G)
        • P(c);SBLOCK,XP(E)::B(F)
        • B(a);SBLOCK::R(D)+S(C)
      • Refutation
        • P(c);
  • Actual
    • S(G);XP(d)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(E)::R(H)+B(F)
      • P(c);SBLOCK,XP(E)::S(G)
      • P(c);SBLOCK::B(F)
      • B(a);SBLOCK::R(D)+S(C)
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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).