[Event "Beginner Tactics Discovered Attack: Discovered Checks and Discovered Attacks - Example #1"] [Site "https://lichess.org/study/JDF8dWO3/7KTFuAC2"] [Date "????.??.??"] [White "Discovered Checks and Discovered Attacks"] [Black "Example #1"] [Result "*"] [Variant "From Position"] [ECO "?"] [Opening "?"] [Annotator "https://lichess.org/@/johnnyzangerous"] [FEN "8/8/2p4k/R1B2q2/6p1/6P1/6KP/8 w - - 0 1"] [SetUp "1"] [Source "https://lichess.org/study/JDF8dWO3/7KTFuAC2"] [Orientation "white"] { White to move. } { [%csl Re3,Ba5,Bf5][%cal Rc5e3,Re3h6,Ba5f5] } 1. Be3+ { We have the pattern set up - rook in the back, bishop in the middle, and an enemy queen in line (fifth rank) . The idea is to move the bishop, checking Black's king and, once the king moves, capture the black queen with the rook. Now there are seemingly two ways to accomplish this task. 1.Be3+ or 1.Bf8+ . However, in this case, only one way works. After 1.Bf8+? , Black can capture with 1...Qxf8 , while also moving the queen away from the white rook's attack. Therefore, the only correct answer is 1.Be3+ . Then, after 1...Kg6 2.Rxf5 Kxf5 , White has gained 4 points, and remains up a bishop in a technically won endgame. } *