Problem Display
PID: 9988 (8/6bb/6p1/1K2N3/1p3nn1/5p2/R1PPk2p/1BQN3R w - - 0 1)

Vukcevich, Milan Radoje

4th Prize=, Die Schwalbe TT, 1961

8/6bb/6p1/1K2N3/1p3nn1/5p2/R1PPk2p/1BQN3R

#2

9 + 9


3174 The Two-move Chess Problem Tradition and Development 1966
145 StrateGems 2015

SOLUTION


  • SOUND
  • Tries
    • 1.Sc3+?
      • 1...bxc3
        • 2.Qe1#
      • 1...Kf2!
    • 1.c4?
      • threat
        • 2.d3#
        • 2.d4#
      • 1...Bxe5
        • 2.d4#
      • 1...bxc4 ep
        • 2.dxc3#
      • 1...Sd3
        • 2.Bxd3#
      • 1...Se3
        • 2.dxe3#
      • 1...g5
        • 2.d3#
      • 1...b3!
    • 1.d4?
      • threat
        • 2.c3#
        • 2.c4#
      • 1...Bg8
        • 2.c4#
      • 1...Sd3
        • 2.cxd3#
      • 1...Se3
        • 2.Qxe3#
      • 1...b3
        • 2.cxb3#
      • 1...g5!
  • Keys
    • 1.d3!
      • threat
        • 2.c3#
        • 2.c4#
      • 1...Bxe5
        • 2.c3#
      • 1...Sxd3
        • 2.cxd3#
      • 1...Bg8
        • 2.c4#
      • 1...Se3
        • 2.Qxe3#
      • 1...b3
        • 2.cxb3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • P(d);XS(C)::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(h);XS(I)::R(E)+P(G)
        • P(d);EP,OGATE,XP(F)::R(E)+P(G),XP(d)
        • S(e);N_GUARD::B(A),XS(e)
        • S(f);OGATE::R(E)+P(G),XS(f)
        • P(g);::R(E)+P(G)
      • Refutation
        • P(d);
    • Try
      • P(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);::R(E)+P(F)
        • S(e);OGATE::R(E)+P(F),XS(e)
        • S(f);N_GUARD::QAR1(B),XS(f)
        • P(d);OGATE::R(E)+P(F),XP(d)
      • Refutation
        • P(g);
  • Actual
    • P(G);
    • Threat
      • DUALS(2)
    • Vars
      • B(h);XS(I)::R(E)+P(F)
      • S(e);OGATE,XP(G)::R(E)+P(F),XS(e)
      • B(i);::R(E)+P(F)
      • S(f);N_GUARD::QAR1(B),XS(f)
      • P(d);OGATE::R(E)+P(F),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).