Problem Display
PID: 51190 (6N1/2b2BN1/2r1p3/1n2p1k1/4Pp2/1p3P1K/1QnB3p/7r w - - 0 1)

Bennett, Frederick

Manchester Guardian, 1953

6N1/2b2BN1/2r1p3/1n2p1k1/4Pp2/1p3P1K/1QnB3p/7r

#2

8 + 11


SOLUTION


  • SOUND
  • Sets
    • 1...Rc3
      • 2.Sxe6#
    • 1...Rc4
      • 2.Sxe6#
    • 1...Rc5
      • 2.Sxe6#
    • 1...Rd6
      • 2.Qxe5#
    • 1...Ba5
      • 2.Qxe5#
    • 1...Bb6
      • 2.Qxe5#
    • 1...Bd6
      • 2.Sxe6#
    • 1...Bd8
      • 2.Qxe5#
    • 1...Sd6
      • 2.Sxe6#
  • Tries
    • 1.Bxf4+?
      • 1...exf4
        • 2.Qf6#
      • 1...Kxf4!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Be7#
      • 1...Sxb4
        • 2.Qg2#
      • 1...Rc5
        • 2.Sxe6#
      • 1...Rd6
        • 2.Qxe5#
      • 1...Bd6
        • 2.Sxe6#
      • 1...Bd8
        • 2.Qxe5#
      • 1...Sd6
        • 2.Sxe6#

There are these versions: 95590

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(i);N_GUARD,P_PINP(C)::S(G),XP(j)
    • R(i);N_GUARD::S(G),XP(j)
    • R(i);S_CUTB(k)::QAR2(A),XP(g)
    • B(k);N_GUARD::QAR2(A),XP(g)
    • B(k);S_CUTR(i)::S(G),XP(j)
    • S(f);S_CUTR(i)::S(G),XP(j)
  • Tries
    • Try
      • B(B);CHECK,XP(e)
      • Vars
        • P(g);OGATE,XB(B)::QAB1(A)
      • Refutation
        • K(h);S_FLIGHT,XB(B)
  • Actual
    • B(B);N_PINP(e)
    • Threat
      • B(B)
    • Vars
      • S(b);OGATE,XB(B)::QAR(A)
      • R(i);N_GUARD::S(G),XP(j)
      • R(i);S_CUTB(k)::QAR2(A),XP(g)
      • B(k);S_CUTR(i)::S(G),XP(j)
      • B(k);N_GUARD::QAR2(A),XP(g)
      • S(f);S_CUTR(i)::S(G),XP(j)


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).