2r1kbr1/pp2pp1p/n1p1b1p1/7n/PN6/4PPP1/1PPP3P/1RB1K1NR w K - 1 18
FEN state: 2r1kbr1/pp2pp1p/n1p1b1p1/7n/PN6/4PPP1/1PPP3P/1RB1K1NR w K - 1 18 ; Best move: b4a6
The current state of the chess board is: Black rook at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at e7, black pawn at f7 and black pawn at h7. Black knight at a6, black pawn at c6, black bishop at e6 and black pawn at g6. Black knight at h5. White pawn at a4 and white knight at b4. White pawn at e3, white pawn at f3 and white pawn at g3. White pawn at b2, white pawn at c2, white pawn at d2 and white pawn at h2. White rook at b1, white bishop at c1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 1. Full move number is 18. White to move.