- Page 5 line 7: "thirty-nine" instead of "thirty-eight".

- Page 5 line 18: should be "Black Box" instead of "Black".

- Page 13 line 3: add "and famous characters from an Italian comic strip" after "World War II".

- Page 15: the poem should read "Considering gaming as simple gaming / and activity in a too active way / demonstrates how much they are both / so scarcely understood".

- Pages 24/25: switch the drawings.

- Page 24 line 16: the drawing "below" is the drawing "in the next page".

- Page 27 line 1: "The Peruvian Mole" is better known with the English name of "Sprouts".

- Page 27 line 27: after "at the beginning" you should add "with themselves".

- Page 32 line 3: "13th" instead of "third".

- Page 40 line 9 onward: instead of "to a square already colored with the same color, the player receives two penalty points (one point per adjacent square of the same color)." you should read "to one or more squares already colored with the same color, the player receives one penalty point per adjacent square of the same color."

- Page 41 line 12: add "at least" after "The line must be".

- Page 42 line 15: "The center of gravity cannot belong to the track." shound be read as "The center of gravity can be out of the track."

- Page 43 line 27: Change "Of course... his line" in "Of course, the other possibility is that a player is playing so bad that he can't anticipate the lines of his opponents".

- Page 48: The drawing on the right shows a game already won by the light gray. If there was not the line on the extreme right, you could read line 12 as "He has four possibilities" instead of "He has three possibilities". Besides, you do not need the left drawing any more.

- Page 51 line 5: "at 6 in Fig. 52" becomes "at 6 in the drawing below"

- Page 65 line 16: the example COMMENT - CEMENT does not work: you should use CANE - CANDLE or FOOD - FOOTHOLD instead.

- Page 73 line 9: "Typically, the first question each player ask is," should be "The first question each player ask must be of the kind,"

- Page 73 line 17: "typically" should be "of the kind,"

- Page 73 line 19: "might be" should be "has to be of the kind"

- Page 76 line 7: "plane" should be "edge" (or "arris"?)

- Page 76 line 13: "Sometimes, the players systematize the numbers so that the three numbers along an edge add up" should be "The players have to avoid that the three numbers on the edges around the same corner add up"

- Page 86: you should erase "In fact, we can apply all the reasoning that we used in Hex to show that"

- Page 86 line 16: "thirty dots of two colors" should be read as "thirty dots of each color"

- Page 88: I think we need an example to understand the notes about "the total of each column" in the last paragraph about Nim. So you should read it as: "To win at Nim, the player must turn the number of lines in each row into a binary number. The outlook is not good for the player who has to move when the total of each column is 0 or a even number. The outlook is good for a player who has to move when at least one column total is an odd number: if he can not win cross all the remaining lines, he should move in such a way to make every column total equal to 0 or a even number. A quick example: there are 1 line in the first row (binary: 1), 3 in the second (binary: 11), 5 in the third (binary: 101) and 4 in the fourth (binary: 100). The situation is:

1

11

101

100

____

213

so the moving player can make the situation bad for his opponent erasing the three lines on the second row and making all the column totals even or equal to zero.

1

1

0

101

100

____

202"

- Page 96 line 14: "Sjöstedt" instead of "Sjostedt"