MESON Chess Problem Database

Problem Display
PID: 229303 (1Qb5/4R3/3Np1p1/2P1k3/1P2p3/4N1P1/5K2/8 w - - 0 1)

Nilsson, O

Tidskrift for Schack, 1911

1Qb5/4R3/3Np1p1/2P1k3/1P2p3/4N1P1/5K2/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qh8#
    • 1...Bb7
      • 2.Qh8#
    • 1...Bd7
      • 2.Qh8#
  • Tries
    • 1.Sxc8+?
      • 1...Kf6
        • 2.Qf4#
      • 1...Kd4!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Se8#
      • 1...Kd4
        • 2.Sb5#
      • 1...Kf6
        • 2.Sxe4#
      • 1...Bxd7
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(e);OGATE::QAB(H)
  • Tries
    • Try
      • S(F);CHECK,XB(e)
      • Vars
        • K(b);N_SPINP(c),OGATE,S_FLIGHT::QAR2(H)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
  • Actual
    • R(G);N_PINP(c)
    • Threat
      • QAB(H)+S(F)
    • Vars
      • K(b);S_FLIGHT::R(G)+S(F),DCHECK
      • K(b);S_FLIGHT::S(F),XP(a)
      • B(e);OGATE,XR(G)::QAB(H)
HTML5 logo

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).