MESON Chess Problem Database

Problem Display
PID: 205794 (4B3/1r1b2RK/N1kp3R/1p2p3/1p6/1P3P2/8/6B1 w - - 0 1)

Briais, Alexis-Adrien

L'Alfiere di Re, 1925

4B3/1r1b2RK/N1kp3R/1p2p3/1p6/1P3P2/8/6B1

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Sxb4#
    • 1...Bxe8
      • 2.Sxb4#
  • Tries
    • 1.Bxd7+?
      • 1...Kd5
        • 2.Sxb4#
      • 1...Rxd7!
  • Keys
    • 1.Bg6!
      • threat
        • 2.Be4#
      • 1...Kd5
        • 2.Be4#
      • 1...Bf5
        • 2.Sxb4#
      • 1...Be6
        • 2.Sxb4#
      • 1...e4
        • 2.Bxe4#
      • 1...d5
        • 2.Be8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(d);N_SPINB(g),N_SPINP(e),S_FLIGHT::S(D),XP(a)
    • B(g);N_SPINB(g),P_PINR(F),XB(H)::S(D),XP(a)
  • Tries
    • Try
      • B(H);CHECK,XB(g)
      • Vars
        • K(d);N_SPINP(e),S_FLIGHT::S(D),XP(a)
      • Refutation
        • R(f);P_PINR(F),XB(H)
  • Actual
    • B(H);N_PINB(g),N_PINP(e)
    • Threat
      • B(H)
    • Vars
      • K(d);S_FLIGHT::B(H)
      • B(g);P_PINB(H),P_PINR(F)::S(D),XP(a)
      • B(g);P_PINR(F)::S(D),XP(a)
      • P(c);::B(H),XP(c)
      • P(e);OGATEB,SBLOCK::R(E)+B(H)
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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).