Examples
| a | b | c | d | e | f | g | h | ||
| 8 | 8 | ||||||||
| 7 | 7 | ||||||||
| 6 | 6 | ||||||||
| 5 | 5 | ||||||||
| 4 | 4 | ||||||||
| 3 | 3 | ||||||||
| 2 | 2 | ||||||||
| 1 | 1 | ||||||||
| a | b | c | d | e | f | g | h |
In this diagram, Black is ahead a rook, a bishop, and a pawn which would normally be a decisive material advantage. But White, to move, can draw by perpetual check:
- 1. Qe8+ Kh7
- 2. Qh5+ Kg8
- 3. Qe8+ etc (Reinfeld 1958:42–43).
The same position will soon repeat for the third time and White can claim a draw by threefold repetition; or the players will agree to a draw.
Read more about this topic: Perpetual Check
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