2b1k2r/2pp1p1p/r1nbp3/pp1n3R/PqB3P1/1RP1PP2/2QP2P1/1NB1K1N1 w k - 4 16
FEN state: 2b1k2r/2pp1p1p/r1nbp3/pp1n3R/PqB3P1/1RP1PP2/2QP2P1/1NB1K1N1 w k - 4 16 ; Best move: b3b4
The current state of the chess board is: Black bishop at c8, black king at e8 and black rook at h8. Black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at h7. Black rook at a6, black knight at c6, black bishop at d6 and black pawn at e6. Black pawn at a5, black pawn at b5, black knight at d5 and white rook at h5. White pawn at a4, black queen at b4, white bishop at c4 and white pawn at g4. White rook at b3, white pawn at c3, white pawn at e3 and white pawn at f3. White queen at c2, white pawn at d2 and white pawn at g2. White knight at b1, white bishop at c1, white king at e1 and white knight at g1. Black kingside is the only castle move available. Half move number is 4. Full move number is 16. White to move.