MESON Chess Problem Database

Problem Display
PID: 104629 (Q3N3/3ppp2/1Np5/1b2k1PR/3p4/3p1K1B/4P3/6b1 w - - 0 1)

Velimirovic, Milan

Mat, 1973

Q3N3/3ppp2/1Np5/1b2k1PR/3p4/3p1K1B/4P3/6b1

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qe4#
      • 2.Qd5#
    • 1...d5
      • 2.Sd7#
      • 2.Qb8#
    • 1...f5
      • 2.gxf5 ep#
    • 1...f6
      • 2.gxf6#
  • Tries
    • 1.Rh4?
      • threat
        • 2.Re4#
      • 1...d5
        • 2.Sd7#
        • 2.Qb8#
      • 1...f5!
    • 1.Qa2?
      • threat
        • 2.Sxd7#
      • 1...c5
        • 2.Qd5#
      • 1...d5
        • 2.Sd7#
      • 1...d6
        • 2.Sd7#
      • 1...Bc4!
    • 1.Qd8?
      • threat
        • 2.Qxe7#
      • 1...e6
        • 2.Qf6#
      • 1...Bc4!
  • Keys
    • 1.e4!
      • threat
        • 2.Sxd7#
      • 1...dxe4 ep
        • 2.Qa1#
      • 1...f5
        • 2.gxf5 ep#
      • 1...c5
        • 2.Qd5#
      • 1...d5
        • 2.Sd7#
        • 2.Qb8#
      • 1...d6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(i);OGATE::R(E)+P(D),XP(i),EP
    • P(i);OGATE::R(E)+P(D),XP(i)
  • Tries
    • Try
      • R(E);
      • Threat
        • R1(E)
      • Refutation
        • P(i);
    • Try
      • Q(G);
      • Threat
        • S(F),XP(g)
      • Vars
        • P(f);N_GUARD::QAR1(G)
        • P(g);::S(F)
      • Refutation
        • B(d);
    • Try
      • Q(G);
      • Threat
        • QAR2(G),XP(h)
      • Vars
        • P(h);OGATE::QAB1(G)
      • Refutation
        • B(d);
  • Actual
    • P(A);
    • Threat
      • S(F),XP(g)
    • Vars
      • P(c);EP,OGATEB,XP(A)::QAB(G)
      • P(i);OGATE::R(E)+P(D),XP(i),EP
      • P(f);OGATE::QAR1(G)
      • P(g);::S(F)
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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).