White 28 is supported by white 29. White 28 is not vulnerable. And because white 28 is strong, black 27 has no support and is frozon. 1.39-34 13-19 2.43-39 16-21
[ 2...4-10 3.25-20 14x25 4.29-23 18x29 5.34x5 ]
3.41-37 Black can not move any pieces but on his left wing. 11-16 4.37-31 8-13 5.49-44 6-11? 6.29-23 18x29 7.33x24 22x33 8.38x29 19x30 9.31x22 17x28 10.26x10