r3kbn1/p3q2r/n1pp4/1b2p1Np/2p2p1p/1PB1P1PR/2PP1P2/RN1QK3 w q - 10 20
FEN state: r3kbn1/p3q2r/n1pp4/1b2p1Np/2p2p1p/1PB1P1PR/2PP1P2/RN1QK3 w q - 10 20 ; Best move: g5h7
The current state of the chess board is: Black rook at a8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black queen at e7 and black rook at h7. Black knight at a6, black pawn at c6 and black pawn at d6. Black bishop at b5, black pawn at e5, white knight at g5 and black pawn at h5. Black pawn at c4, black pawn at f4 and black pawn at h4. White pawn at b3, white bishop at c3, white pawn at e3, white pawn at g3 and white rook at h3. White pawn at c2, white pawn at d2 and white pawn at f2. White rook at a1, white knight at b1, white queen at d1 and white king at e1. Black queenside is the only castle move available. Half move number is 10. Full move number is 20. White to move.