fen
stringlengths
29
57
total_white_pieces
int64
1
15
total_black_pieces
int64
1
15
total_pieces
int64
4
17
white_pawns
int64
0
8
white_knights
int64
0
2
white_bishops
int64
0
2
white_rooks
int64
0
2
white_queens
int64
0
1
white_kings
int64
1
1
black_pawns
int64
0
8
black_knights
int64
0
2
black_bishops
int64
0
2
black_rooks
int64
0
2
black_queens
int64
0
1
black_kings
int64
1
1
white_material
int64
0
3.8k
black_material
int64
0
3.9k
material_imbalance
int64
-3,800
3.7k
b7/np1k1P1N/1K6/8/2B5/pp6/6p1/8 w - - 0 1
4
7
11
1
1
1
0
0
1
4
1
1
0
0
1
750
1,050
-300
2b3B1/2p5/1P3p2/2p5/2RQ2P1/p1NK1p1N/1k2pr2/8 w - - 0 1
8
9
17
2
2
1
1
1
1
6
0
1
1
0
1
2,550
1,450
1,100
7R/8/5bK1/1p4PP/p2NP1P1/8/2k2b2/Q5N1 w - - 0 1
9
5
14
4
2
0
1
1
1
2
0
2
0
0
1
2,400
900
1,500
2k5/8/1P6/8/3R4/3K4/8/8 w - - 0 1
3
1
4
1
0
0
1
0
1
0
0
0
0
0
1
600
0
600
2r5/1Pp5/3Q4/4P1k1/8/nb1b2KP/7p/3r4 w - - 0 1
5
8
13
3
0
0
0
1
1
2
1
2
2
0
1
1,200
2,200
-1,000
2K5/8/5R2/4R3/8/6P1/2P2k1p/8 w - - 0 1
5
2
7
2
0
0
2
0
1
1
0
0
0
0
1
1,200
100
1,100
5b2/2R4P/P5p1/RP1B3N/4Qppk/3p1K2/p7/1n6 w - - 0 1
9
8
17
3
1
1
2
1
1
5
1
1
0
0
1
2,850
1,150
1,700
8/8/3P4/3nQ3/6K1/8/5Pk1/8 w - - 0 1
4
2
6
2
0
0
0
1
1
0
1
0
0
0
1
1,100
300
800
3R1N1b/2P4P/5p1k/6Pp/n5p1/2P1PK1b/q7/5r2 w - - 0 1
8
9
17
5
1
0
1
0
1
3
1
2
1
1
1
1,300
2,700
-1,400
2R2Q2/2k5/3b4/3P3R/7K/4P3/8/7N w - - 0 1
7
2
9
2
1
0
2
1
1
0
0
1
0
0
1
2,400
350
2,050
3n4/3p4/3k4/6pb/3K4/1P6/r7/8 w - - 0 1
2
6
8
1
0
0
0
0
1
2
1
1
1
0
1
100
1,350
-1,250
8/8/K3n3/P7/pp3Rk1/2pp2P1/7b/8 w - - 0 1
4
7
11
2
0
0
1
0
1
4
1
1
0
0
1
700
1,050
-350
8/8/6R1/8/2PK4/7k/7R/2q5 w - - 0 1
4
2
6
1
0
0
2
0
1
0
0
0
0
1
1
1,100
900
200
BN6/8/1k1P4/7p/5p2/pK6/p1P5/3RB1N1 w - - 0 1
8
5
13
2
2
2
1
0
1
4
0
0
0
0
1
2,000
400
1,600
2bq4/4Kp1n/1p6/b3P1Pk/RPP5/3N3p/7P/4R3 w - - 0 1
9
8
17
5
1
0
2
0
1
3
1
2
0
1
1
1,800
2,200
-400
8/8/1p6/8/8/7p/3B4/4K1k1 w - - 0 1
2
3
5
0
0
1
0
0
1
2
0
0
0
0
1
350
200
150
bN6/4r3/2P5/r4pKp/8/2p5/q7/7k w - - 0 1
3
8
11
1
1
0
0
0
1
3
0
1
2
1
1
400
2,550
-2,150
8/2K2N2/3rp3/3b4/k1p1pp1b/N7/pp4q1/8 w - - 0 1
3
11
14
0
2
0
0
0
1
6
0
2
1
1
1
600
2,700
-2,100
8/8/1n4K1/1p6/8/8/8/k7 w - - 0 1
1
3
4
0
0
0
0
0
1
1
1
0
0
0
1
0
400
-400
8/k7/3K2B1/p5b1/2P2n2/8/2p2n1p/8 w - - 0 1
3
7
10
1
0
1
0
0
1
3
2
1
0
0
1
450
1,250
-800
8/8/2K4p/8/8/8/7N/7k w - - 0 1
2
2
4
0
1
0
0
0
1
1
0
0
0
0
1
300
100
200
8/8/1Pk5/5K2/8/8/5p2/8 w - - 0 1
2
2
4
1
0
0
0
0
1
1
0
0
0
0
1
100
100
0
8/1K6/3Q4/8/8/8/p7/n2k4 w - - 0 1
2
3
5
0
0
0
0
1
1
1
1
0
0
0
1
900
400
500
8/4n3/pB4R1/1Q4p1/p1k2PPR/4p2p/1B6/K4N2 w - - 0 1
9
7
16
2
1
2
2
1
1
5
1
0
0
0
1
3,100
800
2,300
8/5Nk1/7P/4K3/1NP5/1P6/8/4r1b1 w - - 0 1
6
3
9
3
2
0
0
0
1
0
0
1
1
0
1
900
850
50
8/2K2P2/6B1/8/1pp5/2kp4/5p2/3r4 w - - 0 1
3
6
9
1
0
1
0
0
1
4
0
0
1
0
1
450
900
-450
k1n5/q2PP1p1/4KP1p/2n5/8/B1r3p1/P2R1P2/1b6 w - - 0 1
8
9
17
5
0
1
1
0
1
3
2
1
1
1
1
1,350
2,650
-1,300
7r/K1B3P1/4N3/P7/pP1P2R1/4Q3/1P5p/1B3k2 w - - 0 1
11
4
15
5
1
2
1
1
1
2
0
0
1
0
1
2,900
700
2,200
8/q1p1R3/1Kbpp1p1/1p3pp1/bk2p2n/8/N7/8 w - - 0 1
3
13
16
0
1
0
1
0
1
8
1
2
0
1
1
800
2,700
-1,900
1k6/4pB2/4P3/1R6/1R4b1/5K2/8/8 w - - 0 1
5
3
8
1
0
1
2
0
1
1
0
1
0
0
1
1,450
450
1,000
5N2/8/2k2r2/5P2/2QP2K1/3pp2P/pP3N2/B4B2 w - - 0 1
10
5
15
4
2
2
0
1
1
3
0
0
1
0
1
2,600
800
1,800
8/8/1B5P/B1r1RP1p/P1pP3k/P7/1NK5/8 w - - 0 1
10
4
14
5
1
2
1
0
1
2
0
0
1
0
1
2,000
700
1,300
8/3P4/6K1/p3p3/4k1N1/1P2R3/1N6/8 w - - 0 1
6
3
9
2
2
0
1
0
1
2
0
0
0
0
1
1,300
200
1,100
8/7K/5P2/1PN5/1k5p/3B4/6p1/6b1 w - - 0 1
5
4
9
2
1
1
0
0
1
2
0
1
0
0
1
850
550
300
8/2r5/6P1/8/B2K1P2/8/8/3k4 w - - 0 1
4
2
6
2
0
1
0
0
1
0
0
0
1
0
1
550
500
50
8/P2kQ1n1/2R1pp2/4PP2/PR6/3b2n1/5p2/1B1K4 w - - 0 1
9
7
16
4
0
1
2
1
1
3
2
1
0
0
1
2,650
1,250
1,400
br6/8/K7/7P/8/8/2kP4/8 w - - 0 1
3
3
6
2
0
0
0
0
1
0
0
1
1
0
1
200
850
-650
6B1/5r2/3p1Kp1/2p5/7R/3b2P1/k3q3/8 w - - 0 1
4
7
11
1
0
1
1
0
1
3
0
1
1
1
1
950
2,050
-1,100
1Bb5/1P6/1K4p1/nr3nk1/1p4r1/pP6/pP6/2Q5 w - - 0 1
6
10
16
3
0
1
0
1
1
4
2
1
2
0
1
1,550
2,350
-800
8/6p1/1R6/3N1rk1/1P2P3/8/2pK4/8 w - - 0 1
5
4
9
2
1
0
1
0
1
2
0
0
1
0
1
1,000
700
300
k4b2/r3b3/3n3P/1NpPR1P1/2pp4/5p1K/6p1/8 w - - 0 1
6
10
16
3
1
0
1
0
1
5
1
2
1
0
1
1,100
2,000
-900
8/1k4Q1/4P1K1/8/8/8/8/8 w - - 0 1
3
1
4
1
0
0
0
1
1
0
0
0
0
0
1
1,000
0
1,000
7n/2K1pn2/1PP5/8/p1R3pb/8/2p4k/8 w - - 0 1
4
8
12
2
0
0
1
0
1
4
2
1
0
0
1
700
1,350
-650
8/7p/K7/8/8/6p1/3R1k2/8 w - - 0 1
2
3
5
0
0
0
1
0
1
2
0
0
0
0
1
500
200
300
8/1k3pnP/2R5/1N6/8/1p1P4/P3B3/1K6 w - - 0 1
7
4
11
3
1
1
1
0
1
2
1
0
0
0
1
1,450
500
950
3k4/1P6/5p2/2NQP1p1/2r2b2/1PP2P2/1Pr5/5bK1 w - - 0 1
9
7
16
6
1
0
0
1
1
2
0
2
2
0
1
1,800
1,900
-100
3K4/1k2p3/1P6/8/8/8/8/8 w - - 0 1
2
2
4
1
0
0
0
0
1
1
0
0
0
0
1
100
100
0
2K5/1N1p4/r3b3/P4R2/4Pp2/1pq1k2n/8/5b2 w - - 0 1
5
9
14
2
1
0
1
0
1
3
1
2
1
1
1
1,000
2,700
-1,700
8/P7/2p1p3/8/5k2/7P/8/2K5 w - - 0 1
3
3
6
2
0
0
0
0
1
2
0
0
0
0
1
200
200
0
8/1p6/K1p2b2/2p2Pp1/8/8/1qPp1R2/7k w - - 0 1
4
8
12
2
0
0
1
0
1
5
0
1
0
1
1
700
1,750
-1,050
8/p7/1P5p/2P2k2/1B4pK/6b1/5n2/Q7 w - - 0 1
5
6
11
2
0
1
0
1
1
3
1
1
0
0
1
1,450
950
500
8/8/P7/4r3/3k4/8/6K1/2q5 w - - 0 1
2
3
5
1
0
0
0
0
1
0
0
0
1
1
1
100
1,400
-1,300
K7/4r2P/8/8/8/8/k7/8 w - - 0 1
2
2
4
1
0
0
0
0
1
0
0
0
1
0
1
100
500
-400
2K5/8/5n2/2R5/2k5/4P3/p4p2/5B2 w - - 0 1
4
4
8
1
0
1
1
0
1
2
1
0
0
0
1
950
500
450
7R/P7/1P2BP2/1pn5/R2p4/1N1p1bKP/1k1P2Q1/8 w - - 0 1
11
6
17
5
1
1
2
1
1
3
1
1
0
0
1
3,050
950
2,100
8/8/8/5k2/1pK5/3nb3/8/8 w - - 0 1
1
4
5
0
0
0
0
0
1
1
1
1
0
0
1
0
750
-750
8/1r6/1P6/2K5/1P6/6P1/k5P1/8 w - - 0 1
5
2
7
4
0
0
0
0
1
0
0
0
1
0
1
400
500
-100
8/2pP4/P7/7K/1k2p3/3pn3/8/2B4R w - - 0 1
5
5
10
2
0
1
1
0
1
3
1
0
0
0
1
1,050
600
450
4q3/2r2k1B/2NN2pp/1PB5/3K2Rp/1P1P3P/2p5/8 w - - 0 1
10
7
17
4
2
2
1
0
1
4
0
0
1
1
1
2,200
1,800
400
2R5/Q2N4/P7/2pp1p1k/5p2/BPK1n3/p4pb1/7R w - - 0 1
8
9
17
2
1
1
2
1
1
6
1
1
0
0
1
2,750
1,250
1,500
4K3/R1k3p1/P1p3p1/2rn2P1/5nP1/1b6/8/4bq2 w - - 0 1
5
10
15
3
0
0
1
0
1
3
2
2
1
1
1
800
3,000
-2,200
2R5/5Q2/3kR2n/5P2/2b2b2/1p6/1Pp4K/8 w - - 0 1
6
6
12
2
0
0
2
1
1
2
1
2
0
0
1
2,100
1,200
900
7K/B5B1/3N2q1/1PP5/3pk3/8/8/8 w - - 0 1
6
3
9
2
1
2
0
0
1
1
0
0
0
1
1
1,200
1,000
200
8/1PN1pb2/7P/4k3/1P6/P6p/8/K7 w - - 0 1
6
4
10
4
1
0
0
0
1
2
0
1
0
0
1
700
550
150
6k1/8/8/4K3/8/pB5p/8/8 w - - 0 1
2
3
5
0
0
1
0
0
1
2
0
0
0
0
1
350
200
150
5K2/2P4B/p7/5k2/1p3r1p/2np4/4Pq1n/4B3 w - - 0 1
5
9
14
2
0
2
0
0
1
4
2
0
1
1
1
900
2,400
-1,500
8/P4P2/8/8/1K1p2Bk/8/4b3/8 w - - 0 1
4
3
7
2
0
1
0
0
1
1
0
1
0
0
1
550
450
100
8/P6p/3P4/8/7n/1p3B2/8/1K5k w - - 0 1
4
4
8
2
0
1
0
0
1
2
1
0
0
0
1
550
500
50
8/8/2k3pP/1PRnK3/3P4/2r1p3/8/8 w - - 0 1
5
5
10
3
0
0
1
0
1
2
1
0
1
0
1
800
1,000
-200
1R6/1B6/4K3/8/4p3/1pp5/5P2/5k2 w - - 0 1
4
4
8
1
0
1
1
0
1
3
0
0
0
0
1
950
300
650
8/8/2p3pr/1P1rP3/2P3k1/1b2K3/5NPp/8 w - - 0 1
6
7
13
4
1
0
0
0
1
3
0
1
2
0
1
700
1,650
-950
N3b3/PR4Pp/1r1q4/p6P/PKB3P1/3k2Np/8/8 w - - 0 1
10
7
17
5
2
1
1
0
1
3
0
1
1
1
1
1,950
2,050
-100
K4Q2/p7/7B/5k2/P6P/4N3/8/2N5 w - - 0 1
7
2
9
2
2
1
0
1
1
1
0
0
0
0
1
2,050
100
1,950
8/k3R1PP/1pBP2B1/2pP2n1/8/3rp3/Np6/3Kq3 w - - 0 1
9
8
17
4
1
2
1
0
1
4
1
0
1
1
1
1,900
2,100
-200
8/3n4/6p1/1P3B2/r1k5/8/3pKbP1/8 w - - 0 1
4
6
10
2
0
1
0
0
1
2
1
1
1
0
1
550
1,350
-800
1Q6/8/5k2/7p/8/3r3n/1n5P/3K4 w - - 0 1
3
5
8
1
0
0
0
1
1
1
2
0
1
0
1
1,000
1,200
-200
7b/8/8/7K/3P4/5B2/Pk3P2/8 w - - 0 1
5
2
7
3
0
1
0
0
1
0
0
1
0
0
1
650
350
300
R5k1/r4q2/2N3bP/Pp3PPp/7P/1P4nb/8/5K2 w - - 0 1
9
8
17
6
1
0
1
0
1
2
1
2
1
1
1
1,400
2,600
-1,200
6K1/6B1/RP2P2Q/8/1r2p3/1N4kp/P4p2/8 w - - 0 1
8
5
13
3
1
1
1
1
1
3
0
0
1
0
1
2,350
800
1,550
8/q1P5/P4K1p/5R2/8/4R3/b1p1Bk2/8 w - - 0 1
6
5
11
2
0
1
2
0
1
2
0
1
0
1
1
1,550
1,450
100
1k6/8/6pn/7r/K7/5p2/7p/8 w - - 0 1
1
6
7
0
0
0
0
0
1
3
1
0
1
0
1
0
1,100
-1,100
8/8/3P2K1/1n6/6pQ/8/k7/8 w - - 0 1
3
3
6
1
0
0
0
1
1
1
1
0
0
0
1
1,000
400
600
8/4p3/p4K2/1P6/8/6p1/8/k7 w - - 0 1
2
4
6
1
0
0
0
0
1
3
0
0
0
0
1
100
300
-200
6k1/p7/8/4p1p1/5R2/B3PK1p/1b2Q3/1N4n1 w - - 0 1
6
7
13
1
1
1
1
1
1
4
1
1
0
0
1
2,150
1,050
1,100
1r6/2r5/1p6/3P2pp/4b1P1/1nb4p/p3Q1k1/4K2n w - - 0 1
4
12
16
2
0
0
0
1
1
5
2
2
2
0
1
1,100
2,800
-1,700
8/6N1/8/8/8/7p/7K/3k4 w - - 0 1
2
2
4
0
1
0
0
0
1
1
0
0
0
0
1
300
100
200
3Nk1Q1/3BP3/3p1N2/7p/4P1p1/3rp3/1p3p2/B5KR w - - 0 1
9
8
17
2
2
2
1
1
1
6
0
0
1
0
1
2,900
1,100
1,800
2k1r3/8/8/3q4/8/7P/8/4K3 w - - 0 1
2
3
5
1
0
0
0
0
1
0
0
0
1
1
1
100
1,400
-1,300
8/P1n2R2/2Qp4/pp1B3P/5pK1/n7/1p1k3P/8 w - - 0 1
7
8
15
3
0
1
1
1
1
5
2
0
0
0
1
2,050
1,100
950
2n2r2/2P2p1p/7B/p5K1/4B3/pp5p/4P2k/8 w - - 0 1
5
9
14
2
0
2
0
0
1
6
1
0
1
0
1
900
1,400
-500
2k5/4BR2/8/8/8/2NKr3/2P1p2p/8 w - - 0 1
5
4
9
1
1
1
1
0
1
2
0
0
1
0
1
1,250
700
550
8/8/8/8/4k3/3P4/3K4/n7 w - - 0 1
2
2
4
1
0
0
0
0
1
0
1
0
0
0
1
100
300
-200
3B4/3k4/8/8/4P3/8/2K1Q3/8 w - - 0 1
4
1
5
1
0
1
0
1
1
0
0
0
0
0
1
1,350
0
1,350
8/3P4/8/b7/K7/4n1r1/8/6k1 w - - 0 1
2
4
6
1
0
0
0
0
1
0
1
1
1
0
1
100
1,150
-1,050
8/8/8/8/8/1K4k1/1P6/5b2 w - - 0 1
2
2
4
1
0
0
0
0
1
0
0
1
0
0
1
100
350
-250
8/3kb3/1N3P2/8/2b5/7P/2K5/8 w - - 0 1
4
3
7
2
1
0
0
0
1
0
0
2
0
0
1
500
700
-200
2k4K/r5P1/4b3/5p2/6b1/8/4P3/Q7 w - - 0 1
4
5
9
2
0
0
0
1
1
1
0
2
1
0
1
1,100
1,300
-200
8/6K1/8/pP6/8/6bN/6k1/8 w - - 0 1
3
3
6
1
1
0
0
0
1
1
0
1
0
0
1
400
450
-50
8/4P2p/7k/pP1K4/2Pr1r1p/3p4/2N5/8 w - - 0 1
5
7
12
3
1
0
0
0
1
4
0
0
2
0
1
600
1,400
-800
1k6/7P/8/p3pP2/3P2B1/1R2P3/Pr1P4/qKn5 w - - 0 1
9
6
15
6
0
1
1
0
1
2
1
0
1
1
1
1,450
1,900
-450