White can break through on top if the bottom right is blocked first, but it's still a win for black:
|19.r1320.q1421.q1522.p1623.p1724.o1825.q19 P16 is the key move here, but because P17 connects to M14, we have to go one step more.
26.t727.t928.r629.q630.p531.m432.o733.l634.i13 And that's it, because the space on top left is not big enough to make a full block, even if it's done before the breakthrough.
|19.r13 20.q14 21.q15 22.p16 23.p17 24.o18 25.q19
P16 is the key move here, but because P17 connects to M14, we have to go one step more.
26.t7 27.t9 28.r6 29.q6 30.p5 31.m4 32.o7 33.l6 34.i13
And that's it, because the space on top left is not big enough to make a full block, even if it's done before the breakthrough.