1Rb3nr/r2np3/p3kp1b/3p2pp/3P4/q1P3PP/P2NPP1B/4KBNR b K - 0 20
FEN state: 1Rb3nr/r2np3/p3kp1b/3p2pp/3P4/q1P3PP/P2NPP1B/4KBNR b K - 0 20 ; Best move: a3c1
The current state of the chess board is: White rook at b8, black bishop at c8, black knight at g8 and black rook at h8. Black rook at a7, black knight at d7 and black pawn at e7. Black pawn at a6, black king at e6, black pawn at f6 and black bishop at h6. Black pawn at d5, black pawn at g5 and black pawn at h5. White pawn at d4. Black queen at a3, white pawn at c3, white pawn at g3 and white pawn at h3. White pawn at a2, white knight at d2, white pawn at e2, white pawn at f2 and white bishop at h2. White king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.