rnb1kbnr/p5p1/1p5p/2qppp2/1PP2P2/3P2PN/R3P2P/1NBQKB1R w Kkq - 1 10
FEN state: rnb1kbnr/p5p1/1p5p/2qppp2/1PP2P2/3P2PN/R3P2P/1NBQKB1R w Kkq - 1 10 ; Best move: b4c5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7 and black pawn at g7. Black pawn at b6 and black pawn at h6. Black queen at c5, black pawn at d5, black pawn at e5 and black pawn at f5. White pawn at b4, white pawn at c4 and white pawn at f4. White pawn at d3, white pawn at g3 and white knight at h3. White rook at a2, white pawn at e2 and white pawn at h2. White knight at b1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside, black kingside and black queenside castles are available. Half move number is 1. Full move number is 10. White to move.