r1bqk3/4br2/5p2/ppp3p1/P2P4/RPP2P1p/3KBn1P/1N4NR w - - 4 23
FEN state: r1bqk3/4br2/5p2/ppp3p1/P2P4/RPP2P1p/3KBn1P/1N4NR w - - 4 23 ; Best move: e2b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black king at e8. Black bishop at e7 and black rook at f7. Black pawn at f6. Black pawn at a5, black pawn at b5, black pawn at c5 and black pawn at g5. White pawn at a4 and white pawn at d4. White rook at a3, white pawn at b3, white pawn at c3, white pawn at f3 and black pawn at h3. White king at d2, white bishop at e2, black knight at f2 and white pawn at h2. White knight at b1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 23. White to move.