r1b4r/p1pnkp2/np5b/3pp1pp/2P1P3/P1QP1PP1/1P5P/RN3K1R w - - 1 15
FEN state: r1b4r/p1pnkp2/np5b/3pp1pp/2P1P3/P1QP1PP1/1P5P/RN3K1R w - - 1 15 ; Best move: e4d5
The current state of the chess board is: Black rook at a8, black bishop at c8 and black rook at h8. Black pawn at a7, black pawn at c7, black knight at d7, black king at e7 and black pawn at f7. Black knight at a6, black pawn at b6 and black bishop at h6. Black pawn at d5, black pawn at e5, black pawn at g5 and black pawn at h5. White pawn at c4 and white pawn at e4. White pawn at a3, white queen at c3, white pawn at d3, white pawn at f3 and white pawn at g3. White pawn at b2 and white pawn at h2. White rook at a1, white knight at b1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 15. White to move.