MESON Chess Problem Database

Problem Display
PID: 202327 (N7/1p6/bP6/p1kPB3/P2RP3/1p6/1N1Pp3/4K3 w - - 0 1)

Mangiaracina, Angelo

L'Alfiere di Re, 1923

N7/1p6/bP6/p1kPB3/P2RP3/1p6/1N1Pp3/4K3

#2

10 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Sxd3#
    • 1...Bc4
      • 2.Rxc4#
  • Tries
    • 1.d3?
      • 1...Bxd3
        • 2.Sxd3#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Bb5!
  • Keys
    • 1.Rb4!
      • 1...Kxb4
        • 2.Bd6#
      • 1...axb4
        • 2.d4#
      • 1...Bd3
        • 2.Sxd3#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Bb5
        • 2.Rxb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD::S(B),XB(e)
    • B(e);N_GUARD::R1(E),XB(e)
  • Tries
    • Try
      • P(C);
      • Vars
        • B(e);XP(C)::S(B),XB(e)
        • B(e);N_GUARD::R1(E),XB(e)
      • Refutation
        • B(e);
  • Actual
    • R(E);
    • Vars
      • K(d);S_FLIGHT,XR(E)::B(H)
      • P(c);SBLOCK,XR(E)::P(C)
      • B(e);N_GUARD::S(B),XB(e)
      • B(e);N_GUARD::R1(E),XB(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).