MESON Chess Problem Database

Problem Display
PID: 208899 (8/2NR4/1k2p3/1p6/1R2N3/2KB4/8/8 w - - 0 1)

Seymour, Robert Hoe

American Chess Journal, 1876

8/2NR4/1k2p3/1p6/1R2N3/2KB4/8/8

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd5+?
      • 1...Ka5
        • 2.Ra7#
      • 1...Ka6
        • 2.Ra4#
      • 1...Kc6
        • 2.Bxb5#
      • 1...exd5!
  • Keys
    • 1.Sa8+!
      • 1...Ka5
        • 2.Ra7#
      • 1...Ka6
        • 2.Ra4#
      • 1...Kc6
        • 2.Bxb5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::R(F)
        • K(b);P-FLIGHT::R(C)
        • K(b);N_SPINP(a),P-FLIGHT::B(B),XP(a)
      • Refutation
        • P(c);XS(E)
  • Actual
    • S(E);CHECK
    • Vars
      • K(b);N_SPINP(a),S_FLIGHT::R(F)
      • K(b);P-FLIGHT::R(C)
      • K(b);N_SPINP(a),P-FLIGHT::B(B),XP(a)
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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).