System.IndexOutOfRangeException is thrown unexpectedly

[Staicu-Ciprian-Stefan]

Repository is up to date.

Error message

This exception was originally thrown at this call stack: MyBot.DeepThink(ChessChallenge.API.Board, ChessChallenge.API.Timer, double, double, int, int) in MyBot.cs MyBot.DeepThink(ChessChallenge.API.Board, ChessChallenge.API.Timer, double, double, int, int) in MyBot.cs MyBot.DeepThink(ChessChallenge.API.Board, ChessChallenge.API.Timer, double, double, int, int) in MyBot.cs MyBot.DeepThink(ChessChallenge.API.Board, ChessChallenge.API.Timer, double, double, int, int) in MyBot.cs MyBot.Think(ChessChallenge.API.Board, ChessChallenge.API.Timer) in MyBot.cs ChessChallenge.Application.ChallengeController.GetBotMove() in ChallengeController.cs [External Code] ChessChallenge.Application.ChallengeController.Update() in ChallengeController.cs ChessChallenge.Application.Program.Main() in Program.cs

Command window error message

An error occurred while bot was thinking. System.IndexOutOfRangeException: Index was outside the bounds of the array. at MyBot.DeepThink(Board board, Timer timer, Double alfa, Double beta, Int32 player, Int32 depth) in D:\MyDesktop\SebLague\Chess-Challenge\Chess-Challenge\src\My Bot\MyBot.cs:line 59 at MyBot.DeepThink(Board board, Timer timer, Double alfa, Double beta, Int32 player, Int32 depth) in D:\MyDesktop\SebLague\Chess-Challenge\Chess-Challenge\src\My Bot\MyBot.cs:line 32 at MyBot.DeepThink(Board board, Timer timer, Double alfa, Double beta, Int32 player, Int32 depth) in D:\MyDesktop\SebLague\Chess-Challenge\Chess-Challenge\src\My Bot\MyBot.cs:line 32 at MyBot.DeepThink(Board board, Timer timer, Double alfa, Double beta, Int32 player, Int32 depth) in D:\MyDesktop\SebLague\Chess-Challenge\Chess-Challenge\src\My Bot\MyBot.cs:line 32 at MyBot.Think(Board board, Timer timer) in D:\MyDesktop\SebLague\Chess-Challenge\Chess-Challenge\src\My Bot\MyBot.cs:line 8 at ChessChallenge.Application.ChallengeController.GetBotMove() in D:\MyDesktop\SebLague\Chess-Challenge\Chess-Challenge\src\Framework\Application\Core\ChallengeController.cs:line 150 Illegal move: Null in position: r1bqk2r/pppp1ppp/2n1p3/8/3Pn3/P1PB1N2/2P2PPP/R1BQK2R b KQkq - 1 7 Game Over: BlackIllegalMove

I also tried debugging my code in case this error originates there, but while stepping through the code, debug mode gets suddenly cancelled. No move was made and no move can be made, but timer goes on.

[Staicu-Ciprian-Stefan]

after more investigation it seems like the behavior described during my previous debug session is because my bot suddenly gets much slower. I don't understand how with no breakpoints the exception is reached instantly, but while debugging it is taking literally minutes.

[ryanheath]

On line 59 in D:\MyDesktop\SebLague\Chess-Challenge\Chess-Challenge\src\My Bot\MyBot.cs your bot code is accessing memory (an array?) out of bounds.

[Staicu-Ciprian-Stefan]

you are right, it was a mistake on my part it is fixed now