4kb1r/rbp1pppp/1n5B/1p5q/1p1PnP1P/4P3/P3B1PR/RN2K1N1 w k - 3 21
FEN state: 4kb1r/rbp1pppp/1n5B/1p5q/1p1PnP1P/4P3/P3B1PR/RN2K1N1 w k - 3 21 ; Best move: e2h5
The current state of the chess board is: Black king at e8, black bishop at f8 and black rook at h8. Black rook at a7, black bishop at b7, black pawn at c7, black pawn at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black knight at b6 and white bishop at h6. Black pawn at b5 and black queen at h5. Black pawn at b4, white pawn at d4, black knight at e4, white pawn at f4 and white pawn at h4. White pawn at e3. White pawn at a2, white bishop at e2, white pawn at g2 and white rook at h2. White rook at a1, white knight at b1, white king at e1 and white knight at g1. Black kingside is the only castle move available. Half move number is 3. Full move number is 21. White to move.