MESON Chess Problem Database

Problem Display
PID: 72675 (2B5/8/1NpP1pP1/1p2k3/4Np2/B1Pp4/3K4/7Q w - - 0 1)

Ojanen, Antti Gottfried

Schackvarlden, 1944

2B5/8/1NpP1pP1/1p2k3/4Np2/B1Pp4/3K4/7Q

#2

9 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Sg5?
      • threat
        • 2.Sf7#
        • 2.Qe4#
        • 2.Qe1#
      • 1...f3
        • 2.Qh2#
      • 1...b4
        • 2.Sf7#
        • 2.Sc4#
      • 1...c5
        • 2.Sf7#
        • 2.Qd5#
      • 1...f5
        • 2.Sd7#
        • 2.Qh8#
      • 1...fxg5!
    • 1.Qh3?
      • threat
        • 2.Qf5#
        • 2.Qe6#
      • 1...f3
        • 2.Qf5#
      • 1...f5
        • 2.Qxf5#
      • 1...Kxe4!
    • 1.Qh5+?
      • 1...f5
        • 2.Qxf5#
      • 1...Kxe4!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Sxd3#
        • 2.Sg4#
        • 2.Qe4#
        • 2.Qe1#
      • 1...f3
        • 2.Qh2#
      • 1...b4
        • 2.Sc4#
      • 1...c5
        • 2.Qd5#
      • 1...f5
        • 2.Qh8#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);OGATEB::QAB(A)
      • Refutation
        • P(f);XS(E)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR1(A)
        • P(f);::QAR1(A),XP(f)
      • Refutation
        • K(d);P-FLIGHT,XS(E)
    • Try
      • Q(A);CHECK
      • Vars
        • P(f);P_SPINP(f)::QAR1(A),XP(f)
      • Refutation
        • K(d);P-FLIGHT,XS(E)
  • Actual
    • S(E);
    • Threat
      • DUALS(4)
    • Vars
      • P(b);OGATEB::QAB(A)
      • P(c);N_GUARD::S(F)
      • P(e);N_GUARD::QAR1(A)
      • P(f);OGATEB::QAB(A)
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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).