[Event "Pandolfini's Endgame Course"] [Site "by Bruce Pandolfini"] [Round "0"] [White "Endgame 184"] [Black "Perpetual Check"] [Result "1/2-1/2"] [FEN "6K1/8/8/4q3/Q7/8/1p6/1k6 w - - 0 1"] 1. Qd1+ Ka2 2. Qa4+ Kb1 3. Qd1+ Ka2 4. Qa4+ Kb1 {#d} 1/2-1/2