rn1k3r/p3b1p1/b6p/1PppnpQ1/1P1Np2P/3q2P1/P2BPP2/RN2KB1R w Q - 6 21
FEN state: rn1k3r/p3b1p1/b6p/1PppnpQ1/1P1Np2P/3q2P1/P2BPP2/RN2KB1R w Q - 6 21 ; Best move: d4e6
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8 and black rook at h8. Black pawn at a7, black bishop at e7 and black pawn at g7. Black bishop at a6 and black pawn at h6. White pawn at b5, black pawn at c5, black pawn at d5, black knight at e5, black pawn at f5 and white queen at g5. White pawn at b4, white knight at d4, black pawn at e4 and white pawn at h4. Black queen at d3 and white pawn at g3. White pawn at a2, white bishop at d2, white pawn at e2 and white pawn at f2. White rook at a1, white knight at b1, white king at e1, white bishop at f1 and white rook at h1. White queenside is the only castle move available. Half move number is 6. Full move number is 21. White to move.