rnb1kb2/2pp4/pp1q1npr/P4p1p/R1N1pP1P/1R4K1/1PPPP1P1/2BQ1BN1 w q - 3 13
FEN state: rnb1kb2/2pp4/pp1q1npr/P4p1p/R1N1pP1P/1R4K1/1PPPP1P1/2BQ1BN1 w q - 3 13 ; Best move: c4d6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at c7 and black pawn at d7. Black pawn at a6, black pawn at b6, black queen at d6, black knight at f6, black pawn at g6 and black rook at h6. White pawn at a5, black pawn at f5 and black pawn at h5. White rook at a4, white knight at c4, black pawn at e4, white pawn at f4 and white pawn at h4. White rook at b3 and white king at g3. White pawn at b2, white pawn at c2, white pawn at d2, white pawn at e2 and white pawn at g2. White bishop at c1, white queen at d1, white bishop at f1 and white knight at g1. Black queenside is the only castle move available. Half move number is 3. Full move number is 13. White to move.