4kbnr/1p1bpp2/r1q1Q1pp/2ppn3/1P6/2P1P3/P2PNPPP/RNBK1B1R w k - 10 18
FEN state: 4kbnr/1p1bpp2/r1q1Q1pp/2ppn3/1P6/2P1P3/P2PNPPP/RNBK1B1R w k - 10 18 ; Best move: e6e5
The current state of the chess board is: Black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black bishop at d7, black pawn at e7 and black pawn at f7. Black rook at a6, black queen at c6, white queen at e6, black pawn at g6 and black pawn at h6. Black pawn at c5, black pawn at d5 and black knight at e5. White pawn at b4. White pawn at c3 and white pawn at e3. White pawn at a2, white pawn at d2, white knight at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at d1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 10. Full move number is 18. White to move.