MESON Chess Problem Database

Problem Display
PID: 219083 (8/1P6/1ppN2p1/1P1p2B1/3k4/N7/2K5/4R3 w - - 0 1)

Coll, EJ

Baltimore American and Commercial Advertiser, 1882

8/1P6/1ppN2p1/1P1p2B1/3k4/N7/2K5/4R3

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Bf6#
  • Tries
    • 1.Sf5+?
      • 1...Kc5
        • 2.Be7#
      • 1...gxf5!
    • 1.b8Q?
      • 1...cxb5
        • 2.Qxb6#
      • 1...c5
        • 2.Bf6#
        • 2.Qh8#
      • 1...Kc5!
  • Keys
    • 1.Be7!
      • 1...Kc5
        • 2.Sf5#
      • 1...cxb5
        • 2.Sdxb5#
      • 1...c5
        • 2.Bf6#
      • 1...g5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::B(E)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • P(e);XS(F)
    • Try
      • P(G);
      • Vars
        • P(d);N_GUARD,XP(D)::QAB(G),XP(c)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(E);
    • Vars
      • K(a);S_FLIGHT::B(E)+S(F)
      • P(d);XP(D)::S(F),XP(d)
      • P(d);SBLOCK::B(E)
      • P(e);N_GUARD::S(F)
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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).