1N2nkr1/2p1qpp1/bp2p2b/1PPp3p/p6P/N3P2R/PB1P1PP1/R2QKB2 w Q - 4 19
FEN state: 1N2nkr1/2p1qpp1/bp2p2b/1PPp3p/p6P/N3P2R/PB1P1PP1/R2QKB2 w Q - 4 19 ; Best move: b5a6
The current state of the chess board is: White knight at b8, black knight at e8, black king at f8 and black rook at g8. Black pawn at c7, black queen at e7, black pawn at f7 and black pawn at g7. Black bishop at a6, black pawn at b6, black pawn at e6 and black bishop at h6. White pawn at b5, white pawn at c5, black pawn at d5 and black pawn at h5. Black pawn at a4 and white pawn at h4. White knight at a3, white pawn at e3 and white rook at h3. White pawn at a2, white bishop at b2, white pawn at d2, white pawn at f2 and white pawn at g2. White rook at a1, white queen at d1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 4. Full move number is 19. White to move.