In this situation the game might go on as follows:
1. P × P, P × P; 2. Q - K B 3, Q - Q 2
White threatened to win a Pawn by Q × P, and Black could not play 2...R - K B 1, because 3 R × B P would also win a Pawn at least.
| 3. R (B 5) - B 2, | R - Kt 3; | ||
| 4. R - Kt 2, | K - R 1; | ||
| 5. R (B 1) - K Kt 1, | R (B 1) - K Kt 1; | ||
| 6. Q - R 5, | R × R; | ||
| 7. R × R, | R × R; | ||
| 8. K × R, | Q - Kt 2 ch; | ||
| 9. K - R 2, | Q - Kt 3; | ||
| 10. Q × Q, | P × Q; | ||
| 11. P - Kt 4, and White wins. | |||
Now suppose that in the position in the preceding diagram it were Black's move, and he played R - K B 1. White would then simply defend his K B P by some move like Q - K B 3, threatening R × Q B P, and then he would bring his King up to Kt 3, and when the time came, break through, as in the previous case. White might even be able to obtain the following position:
Black would now be forced to play R - B 1, and White could then play Q - B 2, and follow it up with K B 3, and thus force Black to play P × P, which would give White a greater advantage.