How to always win at Dots and Boxes – Numberphile

June 30, 2020



This video features ‘games legend’ Elwyn Berlekamp.
Amazons with Elwyn:
More links & stuff in full description below ↓↓↓

Elwyn’s book on Dots and Boxes:
Elwyn’s Winning Ways on Amazon:
Extra footage about bigger boards:

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All Comments

  • 3×3 is in fact a guaranteed win for player 2 if played optimally. For 4×4 optimal play ends in a draw, and for larger square boards, no one knows!

    Lua June 30, 2020 9:46 am Reply
  • Why in the second game red gives a box to blue at first, if Red not given the box then Red wins,Your theory wrong

    Aniket June 30, 2020 9:46 am Reply
  • Who are here because they got Clubhouse games on switch?

    kyo June 30, 2020 9:46 am Reply
  • RIP Elwyn

    MABfan11 June 30, 2020 9:46 am Reply
  • that's cute and all but I want to win a 13 x 13 game

    Geetha Udupa June 30, 2020 9:46 am Reply
  • Great. That's 3×3. What about 4×4?

    Paul King June 30, 2020 9:46 am Reply
  • I feel smart because I e done what he did

    Alienbuzzard June 30, 2020 9:46 am Reply
  • 4:13 2Chainz

    mura June 30, 2020 9:46 am Reply
  • Everybody gansta until the first player pulls a swastika move

    TaikoTuesday June 30, 2020 9:46 am Reply
  • 2nd player always win by breaking spoke, what about 1st player.

    Ramkumar G June 30, 2020 9:46 am Reply
  • Best moves is probably making squares.

    EmmaGaming Channel June 30, 2020 9:46 am Reply
  • The man is a liar…

    That game is called Parchis 😡

    Juan Mena June 30, 2020 9:46 am Reply
  • Lol I had convinced myself that I was invincible at this becuase of the 2 box I used to leave for the opponent. Had figured that quite early as a kid by myself. Hope my friends don't see this video!

    Asad Mohammed June 30, 2020 9:46 am Reply
  • Wow, that's complex for a simple game

    Colin June 30, 2020 9:46 am Reply
  • 4:28 oh boy

    CC June 30, 2020 9:46 am Reply
  • Deep down i got a feeling that only way the guy won was because the wiser one let him to 😈

    Yash Singh June 30, 2020 9:46 am Reply
  • That is why we were playing it with more than 2 players. Genuises

    Dr3N DrGn June 30, 2020 9:46 am Reply
  • "Too short to matter" – Some mathematician

    You know when something is short if you have to have a mathematician tell you that it is!

    Ludicrous June 30, 2020 9:46 am Reply
  • When did a game I played in 2nd grade become competitive

    derpykillz June 30, 2020 9:46 am Reply
  • RIP Elwyn, a great professor

    Icemagician93 June 30, 2020 9:46 am Reply
  • Ive played this game for a year with a freind wenn we hade free in scholl

    atcibatcher henning June 30, 2020 9:46 am Reply
  • Swazica wee woo warning 1940 has come back

    Shadow June 30, 2020 9:46 am Reply
  • Thanks numberphile, very cool

    Pixelsam 7 June 30, 2020 9:46 am Reply
  • The Original Gamer

    KynthesBricks [FullOfBricks] June 30, 2020 9:46 am Reply
  • I…honestly never had thought of sacrificing two boxes for the opponent to get more boxes as a reward

    Euriel Rabano June 30, 2020 9:46 am Reply
  • Living legend!

    not another underfag June 30, 2020 9:46 am Reply
  • 1950: We'll have flying car in future.
    2019: How to win dots and boxes everytime

    Worlar Usham June 30, 2020 9:46 am Reply
  • Why was that recommended to me???

    Cubix Man June 30, 2020 9:46 am Reply
  • I played this with my grandfather a lot back in the days^^

    lonelyPorterCH June 30, 2020 9:46 am Reply
  • 3 million!!!!

    Make u sing June 30, 2020 9:46 am Reply
  • A link is only as long as its longest strong chain

    Myrdred Deceiver June 30, 2020 9:46 am Reply
  • does this work with a larger field like a A4 and have you ever played the game but then with triangles

    JOMOGO June 30, 2020 9:46 am Reply
  • I first played this game this when I was in grade 3 and I used to be a loser in this game until I reached grade 6 where I discovered this same technique and now I am in grade 12 and I am undefeated since then. Today I stumbled upon this video and felt a bit nostalgic. 😂

    Sanish Poudel June 30, 2020 9:46 am Reply
  • I used to play this game when I was in 1st to around 6 or 7th grade.
    But we used an ENTIRE sheet of grided paper as our court (sometimes we would divide the page into 4s to make the games quicker but that wasnt the norm)
    Any tips on how to win like that?

    ChBrahm June 30, 2020 9:46 am Reply
  • In the version I learned instead of getting points for closing up boxes, you get points by closing up areas (wich can be box-shaped).

    5Gonza5 June 30, 2020 9:46 am Reply
  • I have never played this game with the rule that if you make a box you get to go again it's always just been one person's turn them the next it back and forth until the end of the game

    Tyler McCrea June 30, 2020 9:46 am Reply
  • At 7:53 if Elwyn played a vertical line top right corner, he could have lost 4-5 instead of 3-6

    too fat June 30, 2020 9:46 am Reply
  • I would have called it a "pinwheel" pattern, but sure. Swatsticker.

    Salty Bear June 30, 2020 9:46 am Reply

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