Practical Endgame Test 5 / Attempts

White to play and win  

(Diagram copied for your convenience.)

Arno: my try.

Arno's analysis  

I argue that the a-c points are miai. Therefor White should start at one of the d points.

Arno's attempt  

Dave: What if is played at instead? Is it jigo then?

Arno: yes, looks like it :-(

Arno's attempt (continued)  

... and White wins by 1 point.

Arno's 2nd try:

2nd try  

Bill: What if Black does not reply in the bottom left corner, but plays on the top side instead? E. g., instead of .

Arno: if Black plays at then White answers with at . Mutual damage. Eventually either Black answers on the lower left, or White connects to then answers Black's play at the top. In both cases W+1.

2nd try (continued)  

Again W+1.