r1bqkbr1/1p4p1/1n6/pPppppNp/3Pn2P/P1P3P1/4PP1B/1R1QKBR1 b q - 4 19
FEN state: r1bqkbr1/1p4p1/1n6/pPppppNp/3Pn2P/P1P3P1/4PP1B/1R1QKBR1 b q - 4 19 ; Best move: g7g6
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at b7 and black pawn at g7. Black knight at b6. Black pawn at a5, white pawn at b5, black pawn at c5, black pawn at d5, black pawn at e5, black pawn at f5, white knight at g5 and black pawn at h5. White pawn at d4, black knight at e4 and white pawn at h4. White pawn at a3, white pawn at c3 and white pawn at g3. White pawn at e2, white pawn at f2 and white bishop at h2. White rook at b1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. Black queenside is the only castle move available. Half move number is 4. Full move number is 19. Black to move.