While unrelated to this puzzle, the Lappy 486 is one of the best computers ever.
Thursday, February 3, 2011
Wednesday, February 2, 2011
Monday, January 31, 2011
Draw a single loop that connects the grid cells. The loop may only travel horizontally or vertically, and never diagonally (so all turns are of 90 degrees). The loop may only turn at the centers of grid cells, and may not cross itself or branch off. A cell containing a number and an arrow represents the total length of the horizontal (for a left or right arrow) or the vertical (for an up or down arrow) line segments in the row or column pointed at by the arrow (or, equivalently, how many cell boundaries the loop passes through in that direction). The loop may not pass through a cell containing a numbered arrow clue, but all such clues which are in a white cell must be inside the loop, and all black cells must be outside the loop.
In news completely unrelated to puzzles, my second Square Root of Minus Garfield strip has been published. Check out it!
Wednesday, January 26, 2011
Monday, January 24, 2011
In this Crowd Nine puzzle, all of the outlined equations, when read from left to right or from top to bottom, must be true when the grid is filled in. Perform operations in reading order (for example, 3-1+2 is 4, not 0, and 1+2×3 is 9, not 7). The rules are otherwise unchanged.
This puzzle was written as a response to Mah Boy's puzzle which I reviewed in Grant's Review Corner: Volume 3. While I suspect that someone like motris could create a much better one of these, it does illustrate the concepts which I wanted to get across: the presentation is precise, with the rules and equations being clearly delineated, the givens are symmetrical (which almost never hurts), and the equations interact in different ways (see the overlapping equations in column 9).
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