Problem Display
PID: 82129 (BQb4K/6N1/3pP2R/1p2kpp1/1rPp2r1/2n1P1N1/5n2/Bq3R2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

L'Italia Scacchistica, 1968

BQb4K/6N1/3pP2R/1p2kpp1/1rPp2r1/2n1P1N1/5n2/Bq3R2

#2

11 + 12


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...Bxe6
      • 2.Rxe6#
    • 1...Sd3
      • 2.Rxf5#
    • 1...Sfe4
      • 2.Rxf5#
    • 1...Sce4
      • 2.Bxd4#
  • Tries
    • 1.c5?
      • threat
        • 2.Qxd6#
      • 1...Sfe4
        • 2.Rxf5#
      • 1...Sce4!
    • 1.e7?
      • threat
        • 2.Qxd6#
      • 1...Be6
        • 2.Rxe6#
      • 1...Sce4
        • 2.Bxd4#
      • 1...Sfe4!
  • Keys
    • 1.Se8!
      • threat
        • 2.Qxd6#
      • 1...Sfe4
        • 2.Rxf5#
      • 1...Sce4
        • 2.Bxd4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(l);OGATE,XP(F)::R1(G),XB(l)
    • S(b);OGATE::R1(B),XP(i)
    • S(c);N_SPINP(k),OGATE,P_SPINP(e)::B(A),XP(e)
  • Tries
    • Try
      • P(E);
      • Threat
        • QAB1(J),XP(k)
      • Vars
        • S(b);OGATE::R1(B),XP(i)
      • Refutation
        • S(c);N_SPINP(k),P_SPINP(e)
    • Try
      • P(F);
      • Threat
        • QAB1(J),XP(k)
      • Vars
        • B(l);N_GUARD::R1(G),XB(l)
        • S(c);N_SPINP(k),OGATE,P_SPINP(e)::B(A),XP(e)
      • Refutation
        • S(b);
  • Actual
    • S(H);
    • Threat
      • QAB1(J),XP(k)
    • Vars
      • S(b);OGATE::R1(B),XP(i)
      • S(c);N_SPINP(k),OGATE,P_SPINP(e)::B(A),XP(e)


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).