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Coldport is celebrating having a new town hall by laying a tiled design in the public square in front of the building. The design is also square: $5\times 5$ tiles square, in fact, and features three interlocking paths in three colours. The coloured squares around the edges of the grid indicate where the paths enter and exit, but the original design layout has been lost somewhere between the town hall and the Tilelayer's Arms public house. Ensuring that paths do not change colour, lay the tiles out so that:

  • all tiles are used
  • no path changes colour or breaks
  • the entry and exit points are respected.

Tiles 16 and 19 both feature a path crossing itself; the crossing is marked clearly and each leg of the path moves in a straight line and may not turn a corner at the crossing.

Tiles are numbered so answers may be given as a grid such as $$ \begin{eqnarray} 1 & 2 \\ 3 & 4 \end{eqnarray}$$ if you prefer. Along with the final solution, solvers should indicate a specific numeric feature of the final grid.

Grid: enter image description here Tiles: enter image description here

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Apologies for MS Paint quality.

enter image description here

Numeric feature:

All rows and columns add up to 65.

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  • 1
    $\begingroup$ Yes, the diagonals as well -- it forms a magic square :) Well done! $\endgroup$ – user40528 Dec 9 '19 at 14:47
  • 5
    $\begingroup$ I cannot tell you how happy I am. This puzzle was really neat, and I got the rainbow barf hat. $\endgroup$ – Thomas Markov Dec 9 '19 at 15:08
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    $\begingroup$ ^ I genuinely had no idea what you were talking about re the hat, and then I stumbled by accident upon this. Enjoy wearing it! $\endgroup$ – Stiv Dec 9 '19 at 18:02

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