
Kyra McGuire
Love this puzzle app. There's lots of puzzles & the interface is great. There is a banner ad at the bottom & optional ad for extra hints. No intrusive ads every minute or so like some games. The only problem is that not all 1's, & sometimes even larger groupings are placed on the board. These invisble groups make it impossible to solve the puzzles (especially the larger ones) without frequent hints. Because there's no clue to indicate these invisible groups are even there.
1 person found this review helpful

R L Fast
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Finally solved the last one today, after many years. Last page, bottom row, second from left. I won't watch ads, so never tried for any hints. Great game.

Peter Kőváry
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On the 4th page, on the 4th row the puzzles 2, 3 and 4 are provably unsolvable - there's a block of 5 squares with number 6 in it on the starting position.