Puzzle No 168: Hybrid Sudoku (Quad Sums + Numbered Rooms)

A Micro Puzzle for Fun.

Rules:

Necklace Rules:

1.Quad Sums: 

A circle at a corner implies that one digit is the sum of the remaining three digits at that corner. Not all possible circles are given.

2.Numbered Rooms

Apply classic sudoku rules.

Clues outside the grid indicate the digit which has to be placed in the Xth cell in the corresponding direction, where X is the digit placed in the first cell in that direction.

Penpa+: Online Solving

Puzzle: 

Puzzle No 160: Hybrid Sudoku

I created this Sudoku to exploit an interesting discovery I found in a "No Even Neighbor Sudoku".

I have also published this Sudoku on the LMD website, if you would like to go over there and provide your rating, I would really appreciate it.

Rules:

1. Normal classic rules apply. i.e. Place numbers in the grid such that each row, column, and 3*3 box contain the numbers 1-9.

2. Thermo rules apply. i.e. Some thermometer shapes are in the grid, digits must be strictly increasing from the round bulb to the flat end.

3. Little Killer rules apply. i.e. Outside clues are the sum of digits along the pointed arrow direction, digits may repeat as long as classic rules are satisfied.

4. No Even Neighbor rules apply. i.e. No Two Even digits can be orthogonal to each other. (i.e. they can't share an edge)

Difficulty: Hard

Penpa+: Online Solving

Trick/Hint: Spoiler

Sudoku: 

Puzzle No 158: Hybrid Sudoku (Thermo and Palindrome)

This Sudoku was created during the speed setting contest over Cracking The Cryptic discord server within a time limit of 1 hour.

Rules:

-Normal sudoku rules apply: In a row, column, or box, the digits 1-9 have to appear exactly once.

-Thermometer: Digits on the thermometer increase from the bulb to the end.

-Palindrome: Digits read the same from both the directions on these lines.

Theme: Carrot and Asparagus

Difficulty: Hard

Penpa+: Online Solving

Sudoku: 

Puzzle No 154: Hybrid Sudoku (Kropki Pairs and Clones)

This Sudoku was created during the speed setting contest over Cracking The Cryptic discord server within a time limit of 1 hour.

Rules:

-Normal sudoku rules apply: In a row, column, or box, the digits 1-9 have to appear exactly once.

-Kropki pair rules apply: On a black dot, digits have to be in a 1:2 ratio. On a white dot, digits have to be consecutive. There is no negative constraint.

-Clone rules apply: There are two clones in the grid. Clones contain the same digits in the same locations.

Theme: Pentominoes

Difficulty: Hard

Penpa+: Online Solving

Sudoku: