Problem Display
PID: 1991 (2Q5/3n2K1/3N4/2pkpR2/6P1/4P3/P3N3/4BB2 w - - 0 1)

Abbott, Joseph William

Land and Water, 1876

(First published on Sat Dec 30 1876)

2Q5/3n2K1/3N4/2pkpR2/6P1/4P3/P3N3/4BB2

#2

10 + 4


2941 Canadian Illustrated News 1879
4817 English Mechanic and World of Science 1882
3479 121 Chess Problems 1887
15148 Sadier Collection 2014
15239 Valois Notebooks 2021

SOLUTION


  • SOUND
  • Tries
    • 1.Qc6+?
      • 1...Ke6
        • 2.Sc8#
      • 1...Kxc6!
  • Keys
    • 1.Sc4!
      • 1...Kxc4
        • 2.Sf4#
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6
        • 2.Rxe5#
      • 1...Sb6
        • 2.Sc3#
      • 1...Sf6
        • 2.Sc3#
      • 1...Sb8
        • 2.Sc3#
      • 1...Sf8
        • 2.Sc3#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::QAR(J)+S(H)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT,XQ(J)
  • Actual
    • S(H);
    • Vars
      • K(b);N_SPINP(c),P_SPINP(a),S_FLIGHT,XS(H)::B(B)+S(D)
      • K(b);N_SPINP(c),S_FLIGHT::S(D)
      • K(b);N_SPINP(c),P_SPINS(d),S_FLIGHT::R1(G),XP(c)
      • S(d);::S(D)


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).