This text is missing some spaces, please add them: During1933-34heplayedverylittlechesswhileheconcentratedonmathematics.
During 1933-34 he played very little chess while he concentrated on mathematics.

This text is missing some spaces, please add them: Sincetherearenotenoughberths,everyonehastoshare.Whenonememberofthecrewhasthewatchanothersleepsintheberth,thentheyswap.
Since there are not enough berths, everyone has to share. When one member of the crew has the watch another sleeps in the berth, then they swap.

This text is missing some spaces, please add them: Toopen,pressthebutton5timeswithinmax.2seconds,theLEDwillblink.
To open, press the button 5 times within max.2 seconds, the LED will blink.