This video demonstrates a complete walkthrough of solving a New York Times Sudoku Medium puzzle, showcasing key logical deduction techniques including: (1) Basic placement using row, column, and box constraints to eliminate possibilities; (2) Identifying missing numbers in rows, columns, and boxes to determine valid placements; (3) Using blocking logic where existing numbers prevent certain cells from containing specific values; (4) Applying elimination strategies to narrow down candidate numbers for each cell; (5) Utilizing the process of elimination to systematically fill the grid. The walkthrough illustrates how Sudoku puzzles are solved through methodical logical reasoning rather than guessing, with each placement building upon previous deductions to progressively fill the entire grid.
Deep Dive
Prerequisite Knowledge
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Where to go next
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Deep Dive
New York Times Sudoku Medium for July 18, 2026
Added:Okay, so this is a New York Times sudo card for July 18th, 2026.
You can play this sudoku from the link in the description.
Okay, let's get it going. First thing first, I can place nine in box nine here.
And uh Oh. Uh, nine and nine gives me nine here.
Two. Oh, two and two gives me two here.
Three, five, six, eight. Okay.
Four, five, [sighs] six. Oh, okay. Um, column 9 is missing. 678 and this cell is blocked by six7. So, uh, this would be eight.
Uh, I should clean this up.
Oh, that's it.
Oh, um, okay. Looking at box one, seven and seven block these cells. So, seven will be here or here. So, this cell actually cannot be seven. Makes it six.
And oh uh six six and the six gives me six here and the four and the four gives me four here.
[snorts] H.
[sighs and gasps] Um, four.
Oh, okay. This five blocks. These this five blocks here gives me five on row seven. That gives me five in box two.
Uh six will be here or here. 1 3 4 6 7.
Oh. Uh, five. Five. Five.
Five. Gives me five here.
Three, four, seven, nine. Oh, nine blocks. Oh, no. Uh, 3 478.
Uh, 368.
Oh okay. Um these are 368. So this will be one 47 and this is blocked by one and seven.
So this will be four.
Okay. Uh so looking at row seven, here's one which blocks this cell. So one will be here or here in box uh on row seven and they are both in the box nine.
And that means because I need to use one in one of these two cells. This cannot have one makes it seven and this will be one.
And these are one and two. So this cell is left with seven.
Seven.
Seven gives me seven here.
Five blocks. These this five blocks here gives me five.
Two six. Oh okay. Uh these are 269.
This is blocked by two and the nine. So this would be six and this two gives me nine and the two and two and the two gives me two here. This will be one three seven has one and seven. So this will be three.
I have one here two here. Seven and one.
These are three, five, nine.
Five and nine gives me three here and nine here gives me five and nine.
Now these are four, seven, eight. Here's four and seven. So this will be eight.
Here's seven. So this will be four. And here's seven.
Eight is already here. So this would be six 38.
The last number of row three is four which looks these cells gives me four here.
Uh two three five six five and five gives me five. Here the last number of row two is two and these are six and eight.
Oh uh these are three and six and because these will be six and eight uh because these two cells uh six will be in one of these. So this cannot be six gives me three and six.
Uh 68 double means this will be one and two. Two gives me one and two. 7 one.
These are three and eight. Eight here gives me three and eight. And this will be four.
Uh here's one which blocks this cell gives me one and three.
Uh these are seven and eight. Here's seven. So eight, seven, six, eight. Six and six gives me six. Here this is nine and here's three.
Okay, here it is. Thank you very much for watching and if you like the video, please like and subscribe and have a good one.
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