Problem Display
PID: 7226 (Q3R3/6KB/2NBp3/R4pp1/2pNk1r1/1pr2p2/n1pbbp2/q3n3 w - - 0 1)

Velimirovic, Milan

1st Prize, Wola Gulowska, 1998

Q3R3/6KB/2NBp3/R4pp1/2pNk1r1/1pr2p2/n1pbbp2/q3n3

#2

8 + 16


15345 Wola Gulowska Award 1998
145 StrateGems 1999
6166 FIDE Album (1998-2000) 2007

SOLUTION


  • SOUND
  • Sets
    • 1...Rd3
      • 2.Rxe6#
    • 1...Re3
      • 2.Bxf5#
    • 1...Be3
      • 2.Bxf5#
    • 1...Bd3
      • 2.Rxe6#
  • Tries
    • 1.Sxf5?
      • threat
        • 2.Sb4#
      • 1...Rd3+
        • 2.Scd4#
      • 1...Re3+
        • 2.Sfd4#
      • 1...Kd3
        • 2.Se5#
      • 1...Sb4
        • 2.Sxb4#
      • 1...e5!
    • 1.Sb4+?
      • 1...Ke3
        • 2.Sxf5#
      • 1...Kxd4!
    • 1.Re5+?
      • 1...Kf4
        • 2.R5xe6#
      • 1...Kd3!
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Sf4#
      • 1...Rd3+
        • 2.Sed4#
      • 1...Re3+
        • 2.Se5#
      • 1...Kd3
        • 2.Sc5#
      • 1...Ke3
        • 2.Sf4#
      • 1...Rf4
        • 2.Sxf4#
      • 1...Bf4
        • 2.Sxf4#
      • 1...Sd3
        • 2.Sxg5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(i);P_PINS(A),SBLOCK::R(H),XP(p)
    • R(i);P_PINS(A),SBLOCK::B(F),XP(n)
    • B(e);SBLOCK::B(F),XP(n)
    • B(f);SBLOCK::R(H),XP(p)
  • Tries
    • Try
      • S(A);P_PINP(p),XP(n)
      • Threat
        • QAB(G)+S(C)
      • Vars
        • R(i);CHECK,SBLOCK::QAB(G)+S(C)
        • R(i);CHECK,SBLOCK::B(F)+S(A)
        • K(l);N_SPINP(p),S_FLIGHT::S(C)
        • S(c);::QAB(G)+S(C),XS(c)
      • Refutation
        • P(p);
    • Try
      • S(C);CHECK
      • Vars
        • K(l);N_SPINP(n),P-FLIGHT,P_SPINP(p)::S(A),XP(n)
      • Refutation
        • K(l);N_SPINP(n),P-FLIGHT,XS(A)
    • Try
      • R(B);CHECK
      • Vars
        • K(l);N_SPINP(n),P-FLIGHT::B(D)+R(B),XP(p)
      • Refutation
        • K(l);S_FLIGHT
  • Actual
    • S(A);XP(p)
    • Threat
      • R(H)+S(A)
    • Vars
      • R(i);CHECK,SBLOCK::R(H)+S(A)
      • R(i);CHECK,SBLOCK::QAB(G)+S(C)
      • K(l);S_FLIGHT::S(A)
      • K(l);N_SPINP(n),P-FLIGHT::R(H)+S(A)
      • R(m);::R(H)+S(A),XR(m)
      • B(e);::R(H)+S(A),XB(e)
      • S(b);SBLOCK::R(H)+S(A),DCHECK,XP(o)


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).