Problem Display
PID: 160312 (4R3/4p3/3p4/1NR1b3/2P1kpK1/3r1p2/2rpP3/1B1N2B1 w - - 0 1)

Colaneri, Bruno

Troll, 2016

4R3/4p3/3p4/1NR1b3/2P1kpK1/3r1p2/2rpP3/1B1N2B1

#2

9 + 9


SOLUTION


  • SOUND
  • Sets
    • 1...Rc1
      • 2.Bxd3#
      • 2.exd3#
      • 2.exf3#
    • 1...Ra2
      • 2.Bxd3#
      • 2.exd3#
      • 2.exf3#
    • 1...Rb2
      • 2.Bxd3#
      • 2.exd3#
      • 2.exf3#
    • 1...Rcc3
      • 2.exf3#
    • 1...Rxc4
      • 2.Bxd3#
      • 2.exd3#
      • 2.exf3#
    • 1...Re3
      • 2.Sf2#
    • 1...Rd4
      • 2.Sdc3#
      • 2.Sbc3#
    • 1...Bd4
      • 2.Sxd6#
  • Tries
    • 1.Bxc2?
      • threat
        • 2.Bxd3#
        • 2.exd3#
        • 2.exf3#
      • 1...f2
        • 2.Bxd3#
        • 2.exd3#
      • 1...fxe2!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Sf2#
      • 1...Rxd4
        • 2.Sbc3#
      • 1...Bxd4
        • 2.Sxd6#
      • 1...f2
        • 2.Sxf2#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(a);P_SPINR(c)::P(D),XP(d)
    • R(c);P_SPINR(a),SBLOCK::S(B)
    • B(g);N_GUARD,P_SPINP(i),S_CUTR(c)::S(G),XP(h)
  • Tries
    • Try
      • B(A);P_PINR(c),XR(a)
      • Threat
        • DUALS(3)
      • Refutation
        • P(d);XP(D)
  • Actual
    • B(C);
    • Threat
      • S(B)
    • Vars
      • R(c);N_GUARD,P_SPINR(a),SBLOCK,XB(C)::S(G)
      • B(g);N_GUARD,P_SPINP(i),SBLOCK,XB(C)::S(G),XP(h)
      • P(d);::S(B),XP(d)


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).