Problem Display
PID: 246418 (3r2b1/4P3/1Qp3N1/q1p1BRnn/1p2k1P1/p2p3r/2N1PP2/KB1R4 w - - 0 1)

Makaronets, Leonid

3rd Prize, Europe Echecs, 1986

3r2b1/4P3/1Qp3N1/q1p1BRnn/1p2k1P1/p2p3r/2N1PP2/KB1R4

#2

12 + 12


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Tries
    • 1.Bg3?
      • threat
        • 2.Re5#
      • 1...dxe2
        • 2.Sd4#
      • 1...Sf3
        • 2.exf3#
      • 1...Sf7
        • 2.f3#
      • 1...c4
        • 2.Qe3#
      • 1...Rd5!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Re5#
      • 1...dxe2
        • 2.Se3#
      • 1...Sf3
        • 2.exd3#
      • 1...Sf7
        • 2.Qxc6#
      • 1...c4
        • 2.Qd4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(H);
      • Threat
        • R1(I)
      • Vars
        • P(b);XP(E)::B(B)+S(D)
        • S(h);OGATE::P(E),XS(h)
        • S(h);N_GUARD::P(F)
        • P(g);OGATE::QAR1(J)
      • Refutation
        • R(k);
  • Actual
    • B(H);
    • Threat
      • R1(I)
    • Vars
      • P(b);XP(E)::B(B)+S(D)
      • S(h);S_CUTR(c)::P(E),XP(b)
      • S(h);S_CUTB(l)::QAB(J),XP(j)
      • P(g);OGATE::QAR1(J)


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).