r1q1k1r1/p1ppp3/2n4b/1b2PR1p/1P4pP/2NB2PR/2P2P2/3QK3 b q - 0 21
FEN state: r1q1k1r1/p1ppp3/2n4b/1b2PR1p/1P4pP/2NB2PR/2P2P2/3QK3 b q - 0 21 ; Best move: b5d3
The current state of the chess board is: Black rook at a8, black queen at c8, black king at e8 and black rook at g8. Black pawn at a7, black pawn at c7, black pawn at d7 and black pawn at e7. Black knight at c6 and black bishop at h6. Black bishop at b5, white pawn at e5, white rook at f5 and black pawn at h5. White pawn at b4, black pawn at g4 and white pawn at h4. White knight at c3, white bishop at d3, white pawn at g3 and white rook at h3. White pawn at c2 and white pawn at f2. White queen at d1 and white king at e1. Black queenside is the only castle move available. Half move number is 0. Full move number is 21. Black to move.