rnb1r3/pNq1b2p/5kpn/1ppp4/P2p3P/1P2p3/1RPB1PP1/3QKB1R w K - 0 21
FEN state: rnb1r3/pNq1b2p/5kpn/1ppp4/P2p3P/1P2p3/1RPB1PP1/3QKB1R w K - 0 21 ; Best move: f1b5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black rook at e8. Black pawn at a7, white knight at b7, black queen at c7, black bishop at e7 and black pawn at h7. Black king at f6, black pawn at g6 and black knight at h6. Black pawn at b5, black pawn at c5 and black pawn at d5. White pawn at a4, black pawn at d4 and white pawn at h4. White pawn at b3 and black pawn at e3. White rook at b2, white pawn at c2, white bishop at d2, white pawn at f2 and white pawn at g2. White queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 21. White to move.