Scotch Game: what should Black play?

In this position from the Scotch Game, Black's c6 is under direct assault by White's d-pawn on d5. The engine assesses the retreat Nb8 as Black's best try with an evaluation of +0.89, though the alternative retreat Nce7 is the overwhelming choice in practical play. Both options permit Black to preserve the minor piece while accepting a modest spatial disadvantage in the center.

Popularity versus Engine Evaluation

Human play strongly favors Nce7, which appears in 61.2% of the recorded games (2.81M recorded). After Nce7, White scores 52.3% points, and an illustrative engine continuation runs Nce7 c4 g6 c5 Bg7 cxd6. By contrast, the engine-favored retreat Nb8 is seen in 10.0% of encounters (459K recorded) with White scoring 51.0%, where the engine highlights the sequence Nb8 h3 Nf6 Bd3 g6 c4.

Active Knight Lunges

Instead of retreating along the original path, Black occasionally chooses forward outposts, though these yield higher evaluations for White. The jump Nd4 is played in 19.5% of games (897K recorded), where White scores 58.5% and the engine assesses the board at +2.13 after Nd4 Nxd4 exd4 Qxd4 Nf6 Nc3. The flank hop Nb4 accounts for 9.3% of games (426K recorded), reaching an evaluation of +1.15 and a White score of 59.4% in the line Nb4 Be3 Nf6 h3 Be7 a3.

Counter-Attacking Flaws

Attempting to ignore the threat with the counter-break f5 is rare, chosen in just 0.1% of games (5.1K recorded). The engine rates this position at +3.78, reflecting a substantial advantage for White, who scores 64.0% following f5 dxc6 bxc6 Nc3 Nf6 exf5.