March Mutant 8: Polyominous / Quad-Wrangle (cipher)

In this Polyominous puzzle, every region must be shaped like a rectangle. (Thus, the puzzle is similar to a Quad-Wrangle puzzle, but without the restriction that every region must contain exactly one number, and with the restriction that regions with the same area may not share an edge.) Additionally, the given numbers have been replaced by letters; all instances of a particular letter represent the same number, but two different letters must represent different numbers.

March Mutant 7: Polyominous / Quad-Wrangle

In this Polyominous puzzle, every region must be shaped like a rectangle. (Thus, the puzzle is similar to a Quad-Wrangle puzzle, but without the restriction that every region must contain exactly one number, and with the restriction that regions with the same area may not share an edge.) The rules are otherwise unchanged.

March Mutant 6: Crowd Nine (sum skyscrapers)

In this Crowd Nine puzzle, a number to the left or right of a row or above or below a column represents the sum of the numbers in that row or column which can be seen from that direction. A number is visible if and only if it is greater than any other numbers in the row or column between that number and the edge (and is blocked from being seen if a number greater than it is in the way). The rules are otherwise unchanged.

March Mutant 5: Spirits of Serpentine (seconds)

In this Spirits of Serpentine puzzle, the clues represent the second number encountered in the direction of the arrow, rather than the first; if only one number or no numbers are encountered before the edge of the grid or the nearest black cell (whichever is closer), then the clue is 0. The rules are otherwise unchanged.

March Mutant 4: Straight and Arrow (domino)

In this Straight and Arrow puzzle, instead of no two black cells being allowed to share an edge, every black cell must share an edge with EXACTLY ONE other black cell. The rules are otherwise unchanged.

March Mutant 3: Process of Illumination (all 3's)

In this Process of Illumination puzzle, a 3 has been placed in every black cell which could legally contain one. The number of light bulbs adjacent to a black cell without a number must not be 3. The rules are otherwise unchanged.

March Mutant 2: Tetra Firma / Dominnocuous

Solve this grid as a Tetra Firma and a Dominnocuous simultaneously. No cell may be black in both solutions.