// Keep track of position keys along the setup moves (from start position to the
// position just before to start searching). This is needed by draw detection
- // where, due to 50 moves rule, we need to ckeck at most 100 plies back.
+ // where, due to 50 moves rule, we need to check at most 100 plies back.
StateInfo StateRingBuf[102], *SetupState = StateRingBuf;
// UCIParser is a class for parsing UCI input. The class