The library chess afternoon

Source A: an original contemporary non-fiction-style account.

The library started a chess afternoon during the school holidays. I arrived at two with my younger brother, who knew how the pieces moved but had never finished a game. A volunteer placed us at a table near the window and gave us a board with a missing black pawn. She replaced the pawn before we began. The first game was not timed, so the volunteer could pause it to explain a rule when necessary.

After half an hour, my brother noticed that his king was in check. We worked out a legal move together rather than start the game again. At three, the organiser invited anyone interested to try a short puzzle on a demonstration board. My brother solved it before I did, which improved his opinion of the afternoon considerably. We packed away at four. There was no entry fee, but the library asked us to register in advance for the following session because only twelve places were available.

Refer to the whole of Source A. Choose the four true statements below. Write their four letters in the answer box. Choose no more than four; if more are given, only the first four distinct letters will be marked.