Problem Display
PID: 145338 (k1Kb3q/p1P1Pr2/p4P1P/1p1R4/b7/1r2pP2/8/7B w - - 0 1)

Lewis, Robert Tony

Morse, Christopher Jeremy

Problem Observer, 1990

k1Kb3q/p1P1Pr2/p4P1P/1p1R4/b7/1r2pP2/8/7B

#2

8 + 10


SOLUTION


  • SOUND
  • Keys
    • 1.f4!
      • threat
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rd4#
        • 2.Rxb5#
        • 2.Rc5#
        • 2.Re5#
        • 2.Rf5#
        • 2.Rg5#
        • 2.Rh5#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rxd8#
      • 1...Bxc7+
        • 2.Rd8#
      • 1...Bxe7+
        • 2.Rd8#
      • 1...Qxf6
        • 2.Rd6#
      • 1...Qxh6
        • 2.Rh5#
      • 1...Rxf6
        • 2.Rd6#
      • 1...Rxe7
        • 2.Re5#
      • 1...Qg7
        • 2.Rg5#
      • 1...Qh7
        • 2.Rf5#
      • 1...Qe8
        • 2.Rd7#
      • 1...Qg8
        • 2.Rg5#
      • 1...Rb1
        • 2.Rd1#
      • 1...Rb2
        • 2.Rd2#
      • 1...Rc3
        • 2.Rc5#
      • 1...Rd3
        • 2.Rxd3#
        • 2.Rd4#
      • 1...Rb4
        • 2.Rd4#
      • 1...Rg7
        • 2.Rg5#
      • 1...e2
        • 2.Rd3#
      • 1...b4
        • 2.Rb5#

This is a version of 145030

There are these versions: 145339

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 17
    • REMOVED MATES = 0
  • Sets
  • Actual
    • P(B);
    • Threat
      • DUALS(13)
    • Vars
      • B(i);CHECK,XP(F)::B(A)+R(C)
      • B(i);CHECK,XP(G)::B(A)+R(C)
      • Q(j);XP(D)::B(A)+R(C)
      • Q(j);XP(E)::B(A)+R(C)
      • R(g);XP(D)::B(A)+R(C)
      • R(g);XP(G)::B(A)+R(C)
      • Q(j);::B(A)+R(C)
      • Q(j);SBLOCK::B(A)+R(C)
      • R(a);::B(A)+R(C)
      • R(a);P_PINP(F)::B(A)+R(C)
      • R(g);::B(A)+R(C)
      • P(b);::B(A)+R(C)
      • P(d);::B(A)+R(C)


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).