Playing a pro game backwards, Game 1

Moves 249 to 258  

Bill: picks up 2 points in gote. Next, is a 2 1/4 point sente. at a (reverse sente) would gain 1/4 point more, but would allow at b, which gains 2 points. But is right, because it is the last play at the 2 level before a significant drop in temperature. See /Tedomari.

White takes several 1 point sente with - , and then plays , which is an interesting play.

Moves 259 to 268  

How much does (previous diagram) - gain? See /Bottom side.

Bill: - (moves 263 - 268) are curious. Technically correct is at a, a 1 point sente, leaving a 3/4 point play on the right side. is strange, too, losing 1/2 point. (White gets it back by getting the last play, so the score is unaffected.)

See /Right side.

Moves 269 to 278  

Black has captured 6 White stones. White has captured 4 Black stones.

Bill: Black gets the last 1 point play (miai value), but it does not matter, because White gets the 1/2 point play. and are miai.

Bill: My source for this ancient game says that the result is jigo, but it looks like a one point win for Black to me. Also, some of the play looks a little funny, as though the players were contesting a point that isn't there. Maybe the game record is not accurate. Or am I mistaken?