lichess_db_puzzle.csv has similar positions

hi, after some play with puzzle-DB discovered: lichess_puzzle_db with 2132989positions has 5607similar positions start +505 after 1st poor move
(is it proper place to post?)

How do you define similar?

same ()
do you meed assistance?
example 3 same pos

NtjrD,2kr1b1r/ppp2ppp/2n5/4p2q/3P2n1/2N2N2/PPP1BPP1/R1BQ1RK1 w - - 0 10,c1g5 c6d4 f3h4 d4e2,2490,78,92,910,advantage kingsideAttack opening short,lichess.org/YS8HHP0w#19

YxswP,2kr1b1r/ppp2ppp/2n5/4p2q/3P2n1/2N2N2/PPP1BPP1/R1BQ1RK1 w - - 0 10,f3h4 d8d4 e2g4 d4g4,2070,77,91,490,advantage opening short,lichess.org/FKmTTvGW#19

siS4s,2kr1b1r/ppp2ppp/2n5/4p2q/3P2n1/2N2N2/PPP1BPP1/R1BQ1RK1 w - - 0 10,c3e4 c6d4 d1d4 e5d4,1735,100,41,22,advantage opening short,lichess.org/UesOSp42#19

taken moves are different, so can say, similarity is justified; but

But after 1st taken 'weak' move, there will be 6112 duplicate pos
here 5 same pos (& move taken)
1WTb9, 3K4/1P6/4k3/2q5/8/8/8/8 w - - 9 72,b7b8q c5e7 d8c8 e7d7,1646
3Sad4, 3K4/1P6/4k3/2q5/8/8/8/8 w - - 10 53,b7b8q c5e7 d8c8 e7d7,1479
CwaBV, 3K4/1P6/4k3/2q5/8/8/8/8 w - - 9 65,b7b8q c5e7 d8c8 e7d7,1466
Gxkcs, 3K4/1P6/4k3/2q5/8/8/8/8 w - - 11 68,b7b8q c5e7 d8c8 e7d7,1967

and 5th pos, after move became same as above 4 after move
x4Mgt, 1QK5/8/4k3/2q5/8/8/8/8 w - - 7 69,c8d8 c5e7 d8c8 e7d7,1632