rnb1kb2/1p2n3/2pp2p1/p3pp1r/PP2PPPp/2PB4/qB1PK2P/RN2Q1NR w - - 2 21
FEN state: rnb1kb2/1p2n3/2pp2p1/p3pp1r/PP2PPPp/2PB4/qB1PK2P/RN2Q1NR w - - 2 21 ; Best move: a1a2
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at b7 and black knight at e7. Black pawn at c6, black pawn at d6 and black pawn at g6. Black pawn at a5, black pawn at e5, black pawn at f5 and black rook at h5. White pawn at a4, white pawn at b4, white pawn at e4, white pawn at f4, white pawn at g4 and black pawn at h4. White pawn at c3 and white bishop at d3. Black queen at a2, white bishop at b2, white pawn at d2, white king at e2 and white pawn at h2. White rook at a1, white knight at b1, white queen at e1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. White to move.