rnb2kn1/4b2r/p1ppqp2/4p1Pp/PPp1P1PP/8/1BPPN1K1/R2Q2NR b - - 0 20
FEN state: rnb2kn1/4b2r/p1ppqp2/4p1Pp/PPp1P1PP/8/1BPPN1K1/R2Q2NR b - - 0 20 ; Best move: e6g4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at f8 and black knight at g8. Black bishop at e7 and black rook at h7. Black pawn at a6, black pawn at c6, black pawn at d6, black queen at e6 and black pawn at f6. Black pawn at e5, white pawn at g5 and black pawn at h5. White pawn at a4, white pawn at b4, black pawn at c4, white pawn at e4, white pawn at g4 and white pawn at h4. White bishop at b2, white pawn at c2, white pawn at d2, white knight at e2 and white king at g2. White rook at a1, white queen at d1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. Black to move.