Problem Display
PID: 164437 (8/1K2pp2/2Rb4/2Nk1p2/2r1pP2/2Bp4/Q7/3R1b1B w - - 0 1)

Schlotterbeck, Benno

Probleemblad, 1978

8/1K2pp2/2Rb4/2Nk1p2/2r1pP2/2Bp4/Q7/3R1b1B

#2

8 + 9


SOLUTION


  • SOUND
  • Sets
    • 1...Bh3
      • 2.Rxd3#
  • Tries
    • 1.Sxe4?
      • threat
        • 2.Qxc4#
      • 1...Ke6
        • 2.Sc5#
      • 1...Bc5
        • 2.Sf6#
      • 1...d2!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Qxc4#
      • 1...Ke6
        • 2.Sc5#
      • 1...Bc5
        • 2.Sb4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::R(A),XP(b)
  • Tries
    • Try
      • S(F);XP(d)
      • Threat
        • QAB1(C),XR(c)
      • Vars
        • K(e);N_SPINP(b),P_SPINB(g),S_FLIGHT::S(F)
        • B(g);::B(B)+S(F),DCHECK
      • Refutation
        • P(b);
  • Actual
    • S(F);P_PINP(d),XP(b)
    • Threat
      • QAB1(C),XR(c)
    • Vars
      • K(e);N_SPINP(d),P_SPINB(g),S_FLIGHT::S(F)
      • B(g);::R(A)+S(F),DCHECK


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).