Problem Display
PID: 45149 (2n1r3/p1Kp4/BP1p1RN1/p1pk4/2NB3R/1r2pP2/q6b/7Q w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

1st Prize, Pedagogusok Lapja, 1983

2n1r3/p1Kp4/BP1p1RN1/p1pk4/2NB3R/1r2pP2/q6b/7Q

#2

10 + 12


3748 FIDE Album (1983-1985) 1992

SOLUTION


  • SOUND
  • Tries
    • 1.Bb2?
      • threat
        • 2.Bb7#
      • 1...Rxb6
        • 2.Qd1#
      • 1...Re4
        • 2.fxe4#
      • 1...Bf4
        • 2.Sxf4#
      • 1...Se7
        • 2.f4#
      • 1...Qa4!
    • 1.Bc3?
      • threat
        • 2.Bb7#
      • 1...Qa4
        • 2.Qd1#
      • 1...Re4
        • 2.fxe4#
      • 1...Bf4
        • 2.Sxf4#
      • 1...Se7
        • 2.Sxe3#
      • 1...Rxb6!
  • Keys
    • 1.Be5!
      • threat
        • 2.Bb7#
      • 1...Rxb6
        • 2.Sxe3#
      • 1...Qa4
        • 2.f4#
      • 1...Bf4
        • 2.Sxf4#
      • 1...Se7
        • 2.Rxd6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • B(F)
      • Vars
        • R(c);N_GUARD,XP(G)::QAR(A)
        • R(l);OGATE::P(B),XR(l)
        • B(b);N_GUARD::S(I),XB(b)
        • S(k);S_CUTR(l)::QAB(A)+P(B)
      • Refutation
        • Q(a);
    • Try
      • B(D);
      • Threat
        • B(F)
      • Vars
        • Q(a);N_GUARD::QAR(A)
        • R(l);OGATE::P(B),XR(l)
        • B(b);N_GUARD::S(I),XB(b)
        • S(k);S_CUTR(l)::S(C),XP(d)
      • Refutation
        • R(c);XP(G)
  • Actual
    • B(D);
    • Threat
      • B(F)
    • Vars
      • R(c);N_GUARD,XP(G)::S(C),XP(d)
      • Q(a);N_GUARD::QAB(A)+P(B)
      • B(b);N_GUARD::S(I),XB(b)
      • S(k);N_GUARD::R1(H),XP(h)


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).