1rbk2nR/1p1p4/p1p1pp2/2P5/1P3BPp/Q3b2n/P2PPPBR/RN2K1N1 b Q - 2 21
FEN state: 1rbk2nR/1p1p4/p1p1pp2/2P5/1P3BPp/Q3b2n/P2PPPBR/RN2K1N1 b Q - 2 21 ; Best move: h3f4
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at d8, black knight at g8 and white rook at h8. Black pawn at b7 and black pawn at d7. Black pawn at a6, black pawn at c6, black pawn at e6 and black pawn at f6. White pawn at c5. White pawn at b4, white bishop at f4, white pawn at g4 and black pawn at h4. White queen at a3, black bishop at e3 and black knight at h3. White pawn at a2, white pawn at d2, white pawn at e2, white pawn at f2, white bishop at g2 and white rook at h2. White rook at a1, white knight at b1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 2. Full move number is 21. Black to move.