Swiercz too, spent a good amount of time for this retreat. Both players are slowing down at the end of the opening, although this position has already been tested in practice.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... g8f6  4. d2d3  4... f8c5  5. e1g1  5... d7d6  6. c2c3  6... a7a6  7. a2a4  7... h7h6  8. b1d2  8... e8g8  9. h2h3  9... a6a5  10. f1e1  10... c8e6  11. b2b3  11... f8e8  12. c4b5 For the next three moves White spent a significant amount of time on the clock, apparently trying to figure out how to pose problems to his well-prepared opponent. 12... e6d7  13. d2f1 