MESON Chess Problem Database

Problem Display
PID: 96379 (8/8/8/3Q4/6Nn/5P2/2P2KP1/4N2k w - - 0 1)

Dyachuk, Vasyl Vasilovich

Best Problems, 2005

8/8/8/3Q4/6Nn/5P2/2P2KP1/4N2k

#2

7 + 2

6490 yacpdb 2009
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Tries
    • 1.g3?
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Sf5
        • 2.f4#
      • 1...Sg6
        • 2.f4#
      • 1...Sg2!
    • 1.f4?
      • 1...Sxg2
        • 2.Qxg2#
      • 1...Sf5
        • 2.g3#
      • 1...Sg6
        • 2.g3#
      • 1...Sf3!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Sd3#
      • 1...Sxg2
        • 2.Sxg2#
      • 1...Sxf3
        • 2.Sxf3#

Anticipated by 50095(2003)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(D);
      • Vars
        • S(b);OGATE,P_SPINS(b),XP(E)::QAB(G),XS(b)
        • S(b);N_GUARD::QAB(G)+P(E)
      • Refutation
        • S(b);
    • Try
      • P(E);
      • Vars
        • S(b);OGATE,P_SPINS(b),XP(D)::QAB1(G),XS(b)
        • S(b);N_GUARD::QAB(G)+P(D)
      • Refutation
        • S(b);
  • Actual
    • Q(G);
    • Threat
      • QAR(G)+S(A)
    • Vars
      • S(b);XP(D)::QAR(G)+S(A),XS(b)
      • S(b);XP(E)::QAR(G)+S(A),XS(b)
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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).