Rn2k1r1/3b3p/2P2p2/3pPn1P/Pb1q4/6pN/1P1QP1P1/RNB1KB2 w Q - 3 21
FEN state: Rn2k1r1/3b3p/2P2p2/3pPn1P/Pb1q4/6pN/1P1QP1P1/RNB1KB2 w Q - 3 21 ; Best move: a8b8
The current state of the chess board is: White rook at a8, black knight at b8, black king at e8 and black rook at g8. Black bishop at d7 and black pawn at h7. White pawn at c6 and black pawn at f6. Black pawn at d5, white pawn at e5, black knight at f5 and white pawn at h5. White pawn at a4, black bishop at b4 and black queen at d4. Black pawn at g3 and white knight at h3. White pawn at b2, white queen at d2, white pawn at e2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 3. Full move number is 21. White to move.