Pair equal ranks while opening the next column tops.

Read the access map

Standard Nestor deals eight columns of six cards and four separate reserve cards. No column contains two cards of the same rank. Only its top can pair, while all remaining reserve cards are available. Pairing two column tops may expose two new ranks; pairing a reserve card with a column top opens one.

Suppose two Sevens are available as column tops and a third Seven is in reserve. One column Seven covers a Queen and the other covers a Three. If an exposed Queen elsewhere can pair with the newly revealed Queen, pairing the first column Seven with the reserve Seven opens that next move. A Seven pair using the second column has a different access result. Which route is best depends on the remaining cards.

Save a reachable partner for a buried rank

Each rank occurs four times and must leave in two pairs. A buried copy cannot pair until its column tops above it have gone. Before pairing the last two currently available copies of a rank, inspect where the other copies sit and what must be removed to expose them. A legal pair can make a later match harder to reach, though it does not by itself prove the position lost.

Nestor Doublets: more, shorter columns

Doublets uses twelve columns of four cards and four reserve cards. It exposes up to twelve column tops at once, compared with eight in standard Nestor. More opening choices make it useful to compare the next card beneath each candidate pair. Emptying a short column gives no refill; it simply reduces the number of future column tops.

Nestor Vertical: a larger reserve

Vertical deals seven columns of six and ten separate reserve cards. All ten reserve cards are available at the start. A reserve-to-reserve pair removes cards but does not expose column cards; a reserve-to-column pair can release one. Compare the immediate access consequence instead of assuming the larger reserve should always be saved or always used.