r1b2bnr/p1ppkp1q/7p/6pP/4pN2/1Q1nP1PR/PP3P2/RNB1KB2 w Q - 0 20
FEN state: r1b2bnr/p1ppkp1q/7p/6pP/4pN2/1Q1nP1PR/PP3P2/RNB1KB2 w Q - 0 20 ; Best move: f4d3
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7, black king at e7, black pawn at f7 and black queen at h7. Black pawn at h6. Black pawn at g5 and white pawn at h5. Black pawn at e4 and white knight at f4. White queen at b3, black knight at d3, white pawn at e3, white pawn at g3 and white rook at h3. White pawn at a2, white pawn at b2 and white pawn at f2. 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 0. Full move number is 20. White to move.