The weekly puzzle from Le Monde is a leaking variant on an old puzzle: Three buckets have capacities of 8, 5 and 3 litres, respectively. At the start of the game, the 8 litre bucket is full and both others are empty. Aiming at reaching exactly 4 litres in one bucket, water is transferred between […]

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## Le Monde puzzle [#1149]

July 1, 2020## Le Monde puzzle [#1147]

June 10, 2020The weekly puzzle from Le Monde is not much, again: A number A is such that (1) the difference between two digits is never 1 (2) two digits are equal to 2 (3) it only involves 3 different digits (4) it is a multiple of 4 (5) the sum of two of the digits is […]

## Le Monde puzzle [#1146]

June 5, 2020The weekly puzzle from Le Monde is once more disappointing. Everyday of the month, take 0, 1 or 2 units. If one unit taken past day, next day none can be taken. If two units taken two day ago, none can be taken the current day. What is the strategy maximising the number of units […]

## Le Monde puzzle [#1144]

May 19, 2020The weekly puzzle from Le Monde is again using 2020 but not R! Two teams involve a prime total number m of participants, with each player getting between 0 and 100 points. The total score for both teams is 2020, with team B less than team A on average. A single transfer from A to […]

## Le Monde puzzle [#1141]

May 4, 2020The weekly puzzle from Le Monde is in honour of John Conway, who just passed away, ending up his own game of life: On an 8×8 checker-board, Alice picks n squares as “infected”. She then propagates the disease by having each square with least two infected neighbours to become infected as well. What is the […]