Saving the game is lesson 3 of 8 in Defensive moves, a tactics course suited to players rated around 1400 (club players). The position is difficult. Find the only move that holds the draw; every natural move loses. It has 7 interactive exercises: 7 calculated lines from real positions. You play every move on a board and get feedback straight away. The lesson is free.
What you practise
Black to move: hold the draw. (4 positions)
White to move: hold the draw. (3 positions)
Worked examples
Black to move: hold the draw. 1...Nxb5 2.Rxe8+ Rxe8. Nxb5 was the only move that holds. The game is saved. After Rxe7 the position would be lost.
White to move: hold the draw. 1.Nb6+ Kd6 2.Nxd5. Nb6+ was the only move that holds. The game is saved. After Ne5+ the position would be lost.