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
q4R2/1p3R2/B7/P2ppp2/Bkp2K2/P6N/6p1/3n4 w - - 0 1
8
9
17
2
1
2
2
0
1
6
1
0
0
1
1
2,200
1,800
400
7k/r7/1r6/6p1/8/5K2/8/8 w - - 0 1
1
4
5
0
0
0
0
0
1
1
0
0
2
0
1
0
1,100
-1,100
8/3p4/P2k4/1p3n2/8/3N1P2/8/K2Q4 w - - 0 1
5
4
9
2
1
0
0
1
1
2
1
0
0
0
1
1,400
500
900
n3QB2/2nP4/7p/k4K2/8/R6P/1p4pp/8 w - - 0 1
6
7
13
2
0
1
1
1
1
4
2
0
0
0
1
1,950
1,000
950
2k5/7P/7B/5pp1/8/7n/P1K2p2/2Q5 w - - 0 1
5
5
10
2
0
1
0
1
1
3
1
0
0
0
1
1,450
600
850
1N5q/5p2/7p/8/P2N3P/1b1P2P1/3k3K/8 w - - 0 1
7
5
12
4
2
0
0
0
1
2
0
1
0
1
1
1,000
1,450
-450
8/P4k2/1R4P1/1p6/2N2pQ1/8/2b3rK/2b5 w - - 0 1
6
6
12
2
1
0
1
1
1
2
0
2
1
0
1
1,900
1,400
500
8/8/4R3/6k1/3P4/2P5/6b1/r5K1 w - - 0 1
4
3
7
2
0
0
1
0
1
0
0
1
1
0
1
700
850
-150
8/2PQ1P1p/7r/p1P5/Bkn2K2/bP6/2pn4/6r1 w - - 0 1
7
9
16
4
0
1
0
1
1
3
2
1
2
0
1
1,650
2,250
-600
7n/1pK2R2/8/2p4q/4p3/1Pk3p1/1n1bP3/3B1r2 w - - 0 1
5
10
15
2
0
1
1
0
1
4
2
1
1
1
1
1,050
2,750
-1,700
8/B7/8/nR6/Kp1P4/8/8/3n2k1 w - - 0 1
4
4
8
1
0
1
1
0
1
1
2
0
0
0
1
950
700
250
8/6qr/B4PP1/k6p/P7/1P6/b7/N1K5 w - - 0 1
7
5
12
4
1
1
0
0
1
1
0
1
1
1
1
1,050
1,850
-800
8/P5R1/N7/5P2/3Bk3/8/8/6K1 w - - 0 1
6
1
7
2
1
1
1
0
1
0
0
0
0
0
1
1,350
0
1,350
2b5/1P5P/6K1/6N1/8/R1P1p2p/1P6/k3r3 w - - 0 1
7
5
12
4
1
0
1
0
1
2
0
1
1
0
1
1,200
1,050
150
8/4b3/8/K7/2PPk3/3P4/7Q/4R3 w - - 0 1
6
2
8
3
0
0
1
1
1
0
0
1
0
0
1
1,700
350
1,350
5n2/4B3/8/6k1/6n1/8/1r6/5K2 w - - 0 1
2
4
6
0
0
1
0
0
1
0
2
0
1
0
1
350
1,100
-750
1k6/8/r4K2/8/5P2/8/6P1/8 w - - 0 1
3
2
5
2
0
0
0
0
1
0
0
0
1
0
1
200
500
-300
n7/p1k5/rP4K1/8/4PP2/1P2B1r1/8/8 w - - 0 1
6
5
11
4
0
1
0
0
1
1
1
0
2
0
1
750
1,400
-650
2q5/4N1k1/1pP3pB/8/1n1B4/1r2p2p/1K1P4/5R2 w - - 0 1
7
8
15
2
1
2
1
0
1
4
1
0
1
1
1
1,700
2,100
-400
8/8/8/1kp5/8/B3p3/2K5/8 w - - 0 1
2
3
5
0
0
1
0
0
1
2
0
0
0
0
1
350
200
150
8/1q1R1K2/3B2P1/7p/8/pN2P2r/2PB1k2/8 w - - 0 1
8
5
13
3
1
2
1
0
1
2
0
0
1
1
1
1,800
1,600
200
2n5/P4P2/5p2/Q7/p1P4R/RP3p2/k2K3P/BN5b w - - 0 1
11
6
17
5
1
1
2
1
1
3
1
1
0
0
1
3,050
950
2,100
8/1k6/8/np6/8/4p3/r1p4P/7K w - - 0 1
2
6
8
1
0
0
0
0
1
3
1
0
1
0
1
100
1,100
-1,000
8/3R1R2/5p2/3p3n/8/k7/P1p1KP2/8 w - - 0 1
5
5
10
2
0
0
2
0
1
3
1
0
0
0
1
1,200
600
600
3n4/PBr2pR1/P5QP/kPP3P1/8/5K2/8/8 w - - 0 1
10
4
14
6
0
1
1
1
1
1
1
0
1
0
1
2,350
900
1,450
8/4p3/8/8/1k6/2p5/7K/8 w - - 0 1
1
3
4
0
0
0
0
0
1
2
0
0
0
0
1
0
200
-200
6Q1/KP1P2kP/3R2p1/3n4/1p6/6P1/5P1B/6bn w - - 0 1
9
6
15
5
0
1
1
1
1
2
2
1
0
0
1
2,250
1,150
1,100
8/4P2k/6np/8/Pb1r1p2/1n6/P2BQ3/7K w - - 0 1
6
7
13
3
0
1
0
1
1
2
2
1
1
0
1
1,550
1,650
-100
8/4K3/7k/8/3P4/8/1R6/8 w - - 0 1
3
1
4
1
0
0
1
0
1
0
0
0
0
0
1
600
0
600
8/8/2bK4/5n2/1P6/k7/8/8 w - - 0 1
2
3
5
1
0
0
0
0
1
0
1
1
0
0
1
100
650
-550
3B4/2P1Kp2/PP4k1/P1r1RN2/8/1Pq4B/n4p2/8 w - - 0 1
10
6
16
5
1
2
1
0
1
2
1
0
1
1
1
2,000
1,900
100
6Bk/8/8/r1p5/6p1/4K2n/7q/8 w - - 0 1
2
6
8
0
0
1
0
0
1
2
1
0
1
1
1
350
1,900
-1,550
1k6/1B6/8/8/8/7K/1n6/8 w - - 0 1
2
2
4
0
0
1
0
0
1
0
1
0
0
0
1
350
300
50
2B2K1B/qP2P3/p5n1/5p1p/8/kp1pR3/N3P3/1r6 w - - 0 1
8
9
17
3
1
2
1
0
1
5
1
0
1
1
1
1,800
2,200
-400
8/2n4P/8/1P1P1bk1/2RN2Pr/4B3/K5q1/8 w - - 0 1
8
5
13
4
1
1
1
0
1
0
1
1
1
1
1
1,550
2,050
-500
8/3KN3/5N1P/2p3P1/2P1r3/4B3/4r1Qp/k6B w - - 0 1
9
5
14
3
2
2
0
1
1
2
0
0
2
0
1
2,500
1,200
1,300
3B4/1Q2Pk1P/2p4K/7n/4r1RP/2Pn4/4p2p/2b5 w - - 0 1
8
8
16
4
0
1
1
1
1
3
2
1
1
0
1
2,150
1,750
400
B7/1R3N1n/4Kq2/1Rp5/p5P1/p4P2/5PPk/8 w - - 0 1
9
6
15
4
1
1
2
0
1
3
1
0
0
1
1
2,050
1,500
550
8/1K6/1Nb5/2p2P2/2kp2N1/r2PP3/3p1p2/1b6 w - - 0 1
6
8
14
3
2
0
0
0
1
4
0
2
1
0
1
900
1,600
-700
6r1/B3P2p/P4p2/5R2/8/2p3kP/2PK4/1bN3N1 w - - 0 1
9
6
15
4
2
1
1
0
1
3
0
1
1
0
1
1,850
1,150
700
8/4p2N/1n1p2k1/8/7r/4p3/3K4/8 w - - 0 1
2
6
8
0
1
0
0
0
1
3
1
0
1
0
1
300
1,100
-800
8/k1K3p1/2P5/2B5/3p4/8/8/8 w - - 0 1
3
3
6
1
0
1
0
0
1
2
0
0
0
0
1
450
200
250
2K5/5p2/8/5r2/7p/bP4p1/2BRk1NN/6q1 w - - 0 1
6
7
13
1
2
1
1
0
1
3
0
1
1
1
1
1,550
2,050
-500
k1N5/6p1/4PK2/p4b2/3Q4/1PN5/8/3b4 w - - 0 1
6
5
11
2
2
0
0
1
1
2
0
2
0
0
1
1,700
900
800
2k5/8/8/1K2P1Rp/8/2b5/2p5/8 w - - 0 1
3
4
7
1
0
0
1
0
1
2
0
1
0
0
1
600
550
50
7K/8/p7/8/8/8/3Pk3/8 w - - 0 1
2
2
4
1
0
0
0
0
1
1
0
0
0
0
1
100
100
0
5b2/1r2k3/7K/2N5/8/8/8/3q4 w - - 0 1
2
4
6
0
1
0
0
0
1
0
0
1
1
1
1
300
1,750
-1,450
2K1Br2/1Qp4k/P3p3/6pr/p1p2b2/1p6/p7/2N5 w - - 0 1
5
11
16
1
1
1
0
1
1
7
0
1
2
0
1
1,650
2,050
-400
3k4/8/4N3/5p2/8/2p2K2/8/8 w - - 0 1
2
3
5
0
1
0
0
0
1
2
0
0
0
0
1
300
200
100
6r1/3k4/6P1/4b3/8/8/1KP5/8 w - - 0 1
3
3
6
2
0
0
0
0
1
0
0
1
1
0
1
200
850
-650
7N/1p5R/8/8/p7/3p1K2/3p4/5k1q w - - 0 1
3
6
9
0
1
0
1
0
1
4
0
0
0
1
1
800
1,300
-500
8/8/8/8/2K2R2/4P1P1/2k2P2/8 w - - 0 1
5
1
6
3
0
0
1
0
1
0
0
0
0
0
1
800
0
800
1KN1b2k/2P1P2p/8/8/1N6/2PPR3/3B1pP1/8 w - - 0 1
10
4
14
5
2
1
1
0
1
2
0
1
0
0
1
1,950
550
1,400
8/k6N/4P2B/2P4K/B1P5/8/r2n4/6r1 w - - 0 1
7
4
11
3
1
2
0
0
1
0
1
0
2
0
1
1,300
1,300
0
8/p3k2p/8/8/3P4/8/KR1pP1P1/8 w - - 0 1
5
4
9
3
0
0
1
0
1
3
0
0
0
0
1
800
300
500
3k3n/2P3P1/8/p5P1/3PB2R/1p2q3/1K2n3/8 w - - 0 1
7
6
13
4
0
1
1
0
1
2
2
0
0
1
1
1,250
1,700
-450
k7/8/2Kb1P2/2p5/P3pN2/BN2p3/p1p3R1/6r1 w - - 0 1
7
8
15
2
2
1
1
0
1
5
0
1
1
0
1
1,650
1,350
300
4r3/1br1nn2/p7/8/p2p3P/1p6/k1K2P1p/4b3 w - - 0 1
3
12
15
2
0
0
0
0
1
5
2
2
2
0
1
200
2,800
-2,600
6q1/8/p7/k7/1n6/6P1/4Kr2/b1N5 w - - 0 1
3
6
9
1
1
0
0
0
1
1
1
1
1
1
1
400
2,150
-1,750
5n2/p7/5b2/ppr5/2pn4/5Bpk/p3K3/3q4 w - - 0 1
2
12
14
0
0
1
0
0
1
6
2
1
1
1
1
350
2,950
-2,600
5q2/8/5b2/8/8/1K6/8/k7 w - - 0 1
1
3
4
0
0
0
0
0
1
0
0
1
0
1
1
0
1,250
-1,250
5K2/7p/1n2b3/1P1k2p1/8/2p5/3p1B2/8 w - - 0 1
3
7
10
1
0
1
0
0
1
4
1
1
0
0
1
450
1,050
-600
r2q4/1N6/5kP1/P3P3/3p3p/2pKN2R/1p1P4/8 w - - 0 1
8
7
15
4
2
0
1
0
1
4
0
0
1
1
1
1,500
1,800
-300
3Q3K/2pp4/8/8/5k2/8/8/8 w - - 0 1
2
3
5
0
0
0
0
1
1
2
0
0
0
0
1
900
200
700
1K6/6N1/8/8/6kq/3r4/5P2/8 w - - 0 1
3
3
6
1
1
0
0
0
1
0
0
0
1
1
1
400
1,400
-1,000
8/3R3P/p7/2K3P1/1r6/3Q4/1p2N3/7k w - - 0 1
6
4
10
2
1
0
1
1
1
2
0
0
1
0
1
1,900
700
1,200
6n1/P4k2/2N1PQ2/5K2/3P2P1/5P2/2p1pb1r/8 w - - 0 1
8
6
14
5
1
0
0
1
1
2
1
1
1
0
1
1,700
1,350
350
8/5P2/7K/8/2B5/P5n1/8/k7 w - - 0 1
4
2
6
2
0
1
0
0
1
0
1
0
0
0
1
550
300
250
8/R1P2p2/1K1q4/4P3/3P4/k7/3P4/N5R1 w - - 0 1
8
3
11
4
1
0
2
0
1
1
0
0
0
1
1
1,700
1,000
700
1k6/5r2/1p6/6nP/7r/1P6/3P4/K7 w - - 0 1
4
5
9
3
0
0
0
0
1
1
1
0
2
0
1
300
1,400
-1,100
8/P2r2N1/1p1K1N1Q/p5R1/8/2P3B1/Bpp5/6k1 w - - 0 1
9
6
15
2
2
2
1
1
1
4
0
0
1
0
1
2,900
900
2,000
8/6k1/2K5/8/5r2/8/3BNPQ1/5R2 w - - 0 1
6
2
8
1
1
1
1
1
1
0
0
0
1
0
1
2,150
500
1,650
7k/8/2pr3P/3p4/P7/2KpP2r/q2b4/N7 w - - 0 1
5
8
13
3
1
0
0
0
1
3
0
1
2
1
1
600
2,550
-1,950
7K/8/2k5/8/5P2/2N5/8/b2r4 w - - 0 1
3
3
6
1
1
0
0
0
1
0
0
1
1
0
1
400
850
-450
8/q1p5/8/8/1n6/2p4k/1K6/8 w - - 0 1
1
5
6
0
0
0
0
0
1
2
1
0
0
1
1
0
1,400
-1,400
8/p7/1p1P4/1K6/P2p2B1/4k3/p7/8 w - - 0 1
4
5
9
2
0
1
0
0
1
4
0
0
0
0
1
550
400
150
8/2p3RP/K5PR/3P4/pn6/2k5/3b1N2/2Q4B w - - 0 1
9
5
14
3
1
1
2
1
1
2
1
1
0
0
1
2,850
850
2,000
1Q2r3/8/4R1pN/1p3p2/2Pp4/4b1k1/1PKn4/4B3 w - - 0 1
7
8
15
2
1
1
1
1
1
4
1
1
1
0
1
2,250
1,550
700
4B3/1p6/K3Bpk1/7P/2P5/2R5/1p1P3P/q6n w - - 0 1
8
6
14
4
0
2
1
0
1
3
1
0
0
1
1
1,600
1,500
100
8/2p2K2/1N2P2k/7P/2p1PRB1/1b4R1/1p1pnp2/8 w - - 0 1
8
8
16
3
1
1
2
0
1
5
1
1
0
0
1
1,950
1,150
800
8/P1P5/8/8/3q4/8/8/kNK5 w - - 0 1
4
2
6
2
1
0
0
0
1
0
0
0
0
1
1
500
900
-400
8/1RK4B/1B6/8/pp2k3/PNp5/8/8 w - - 0 1
6
4
10
1
1
2
1
0
1
3
0
0
0
0
1
1,600
300
1,300
4K2k/1P2Q3/2n5/5B1p/2r2p1P/1B1R2pN/p7/8 w - - 0 1
8
7
15
2
1
2
1
1
1
4
1
0
1
0
1
2,600
1,200
1,400
8/4p3/1k6/4K2P/4p3/7R/8/1Q6 w - - 0 1
4
3
7
1
0
0
1
1
1
2
0
0
0
0
1
1,500
200
1,300
1K6/n5p1/3pp3/r1B1P3/2p5/8/P3k3/8 w - - 0 1
4
7
11
2
0
1
0
0
1
4
1
0
1
0
1
550
1,200
-650
5Q2/5PBP/1P6/3k4/5P2/8/4K3/1r6 w - - 0 1
7
2
9
4
0
1
0
1
1
0
0
0
1
0
1
1,650
500
1,150
8/1pp4n/2k3PP/2p2P2/6p1/4R3/1p6/1K1bq3 w - - 0 1
5
9
14
3
0
0
1
0
1
5
1
1
0
1
1
800
2,050
-1,250
5Q2/7n/k7/8/8/4B2R/P2P4/3K4 w - - 0 1
6
2
8
2
0
1
1
1
1
0
1
0
0
0
1
1,950
300
1,650
5b2/8/2P1P3/8/8/7P/3K4/5k2 w - - 0 1
4
2
6
3
0
0
0
0
1
0
0
1
0
0
1
300
350
-50
8/k1K5/8/6p1/2B5/8/8/8 w - - 0 1
2
2
4
0
0
1
0
0
1
1
0
0
0
0
1
350
100
250
8/3BP1BP/Rr6/2P3k1/pN2p3/6P1/1K6/8 w - - 0 1
9
4
13
4
1
2
1
0
1
2
0
0
1
0
1
1,900
700
1,200
8/7P/3Q4/n4p2/P5Kp/3P1RB1/n2B3k/8 w - - 0 1
8
5
13
3
0
2
1
1
1
2
2
0
0
0
1
2,400
800
1,600
3B4/1Rq5/4P3/3pn3/5pB1/P7/r3K3/2k5 w - - 0 1
6
6
12
2
0
2
1
0
1
2
1
0
1
1
1
1,400
1,900
-500
3r4/3KP3/8/4P3/1B2k1N1/1p6/8/N2Q4 w - - 0 1
7
3
10
2
2
1
0
1
1
1
0
0
1
0
1
2,050
600
1,450
8/6k1/1b2p3/7P/3K4/Rq6/7P/8 w - - 0 1
4
4
8
2
0
0
1
0
1
1
0
1
0
1
1
700
1,350
-650
8/6b1/1P1n4/3k1P2/nprP3P/5KP1/1q1p4/4r3 w - - 0 1
6
9
15
5
0
0
0
0
1
2
2
1
2
1
1
500
3,050
-2,550
1B6/2r1Q3/2P1Pp2/np1K4/2p3N1/3R4/pPp5/3b1k2 w - - 0 1
8
9
17
3
1
1
1
1
1
5
1
1
1
0
1
2,350
1,650
700
8/2k5/7K/7P/8/8/B7/3B4 w - - 0 1
4
1
5
1
0
2
0
0
1
0
0
0
0
0
1
800
0
800
1n4q1/3bN3/1b5p/1P2P3/4p3/1R4PP/p2K2k1/R7 w - - 0 1
8
8
16
4
1
0
2
0
1
3
1
2
0
1
1
1,700
2,200
-500
5k2/p7/8/8/N2p4/4K3/8/8 w - - 0 1
2
3
5
0
1
0
0
0
1
2
0
0
0
0
1
300
200
100