MESON Chess Problem Database

Problem Display
PID: 110825 (4q3/3pBn2/3R1Rp1/rb2k1Pp/3p3K/3Q2P1/4n1N1/4r1bB w - - 0 1)

Pituk, Alexander

Suomen Shakki, 1946

4q3/3pBn2/3R1Rp1/rb2k1Pp/3p3K/3Q2P1/4n1N1/4r1bB

#2

9 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.gxf4#
  • Tries
    • 1.Rde6+?
      • 1...Kd5
        • 2.Sxe1#
        • 2.Se3#
        • 2.Sf4#
      • 1...dxe6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sxg6#
        • 2.Rd5#
        • 2.Qe4#
      • 1...Bxd3
        • 2.Sxd3#
      • 1...Sxg3
        • 2.Sxg6#
        • 2.Rd5#
      • 1...Sxf4
        • 2.gxf4#
      • 1...Sxg5
        • 2.Rd5#
      • 1...Sxd6
        • 2.Bxd6#
      • 1...Qa8
        • 2.Sxg6#
      • 1...Qg8
        • 2.Rd5#
        • 2.Qe4#
      • 1...Ba4
        • 2.Sxg6#
        • 2.Qe4#
      • 1...Bc4
        • 2.Sxg6#
        • 2.Qe4#
      • 1...Ba6
        • 2.Sxg6#
        • 2.Qe4#
      • 1...Bc6
        • 2.Sxg6#
      • 1...Sc1
        • 2.Sxg6#
        • 2.Rd5#
      • 1...Sc3
        • 2.Sxg6#
      • 1...Sh6
        • 2.Rd5#
        • 2.Qe4#
      • 1...Sd8
        • 2.Rd5#
        • 2.Qe4#
      • 1...Sh8
        • 2.Rd5#
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::P(D),XS(c)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • P(j);XR(G)
  • Actual
    • S(B);
    • Threat
      • DUALS(3)
    • Vars
      • B(f);XQ(C)::S(B),XB(f)
      • S(c);OGATE,XS(B)::P(D),XS(c)
      • S(k);XP(F)::R1(G)
      • S(k);OGATE,XR(G)::B(I),XS(k)
      • Q(l);::S(B),XP(i)
      • B(f);::S(B),XP(i)
      • S(c);::S(B),XP(i)
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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).