Problem Display
PID: 159250 (8/Q7/5B2/RB2Nk2/4Rp2/8/2P4K/8 w - - 0 1)

Andrew, Frederick William

Penny Illustrated Paper, 1896

(First published on Sat Jul 25 1896)

8/Q7/5B2/RB2Nk2/4Rp2/8/2P4K/8

#2

8 + 2


15351 SCPF/BCPS Black Books 2016

SOLUTION


  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Bd3#
  • Tries
    • 1.Bh4?
      • 1...Kxe4
        • 2.Bd3#
      • 1...Ke6
        • 2.Qd7#
      • 1...f3!
    • 1.Be7?
      • 1...Kxe4
        • 2.Bd3#
      • 1...Ke6
        • 2.Qd7#
      • 1...f3!
    • 1.Bd8?
      • 1...Kxe4
        • 2.Bd3#
      • 1...Ke6
        • 2.Qd7#
      • 1...f3!
    • 1.Rxf4+?
      • 1...Ke6
        • 2.Qd7#
      • 1...Kxf4!
    • 1.Qb6?
      • 1...Kxe4
        • 2.Bd3#
      • 1...f3!
    • 1.Qd7+?
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kxf6!
  • Keys
    • 1.Sg4!
      • 1...Kxe4
        • 2.Bc6#
      • 1...Kxg4
        • 2.Be2#
      • 1...Kg6
        • 2.Be8#
      • 1...f3
        • 2.Qh7#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XR(C)::B(E)
  • Tries
    • Try
      • B(G);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(C)::B(E)
        • K(b);S_FLIGHT::QAB1(H)
      • Refutation
        • P(a);
    • Try
      • B(G);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(C)::B(E)
        • K(b);S_FLIGHT::QAB1(H)
      • Refutation
        • P(a);
    • Try
      • B(G);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(C)::B(E)
        • K(b);S_FLIGHT::QAB1(H)
      • Refutation
        • P(a);
    • Try
      • R(C);CHECK,XP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(H)
      • Refutation
        • K(b);P-FLIGHT,XR(C)
    • Try
      • Q(H);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(C)::B(E)
      • Refutation
        • P(a);
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(C)::QAB1(H)
      • Refutation
        • K(b);P-FLIGHT,XB(G)
  • Actual
    • S(F);
    • Vars
      • K(b);S_FLIGHT,XR(C)::B(E)
      • K(b);P_SPINP(a),S_FLIGHT,XS(F)::B(E)
      • K(b);S_FLIGHT::B(E)
      • P(a);::QAB(H)


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).