معمای شطرنج

[MEHDI]

Different opinions

In a chess tournament played exactly a hundred years ago the following position occurred:

white to move

1. An amateur, who had strolled by the board, whispered to a friend: "The black pawn on a2 is going to queen, and White can do absolutely nothing to stop it. So Black is winning!"
2. His friend, a stronger player, didn't agree: "Come on, wake up! White plays 1.Rh7! a1Q 2.Rxb7+ Ka3 3.Ra7+ Kb2 4.Rxa1 Kxa1. It's a clear win for White!"
3. At the board White, an expert player, studied the position for a while and then resigned! He stretched out his hand and said to his opponent: "It's quite hopeless, really. After 1.Rh7 you play 1...Ka5 2.Rxb7 Ka6 3.Rb8 Ka7 and I can't stop you from getting the queen. So Black obviously wins."
4. 
   His opponent, who was an even stronger player, accepted his resignation and then, to the horror of the white player, said: "Actually I was just about to resign myself. I saw that after 1.Rh7! Ka5 you simply play 2.Rh8! The a-pawn is lost and the game is over. So actually White was winning."

So who was right – or were all four wrong? We urge you to study the above position and draw your own independent conclusion. If you can solve the puzzle in your head you should give yourself a contortionist's pat on the back.

[Russell]

In a chess tournament played exactly a hundred years ago the following position occurred:

من البته با جرزنی اینرا حل کردم پس جواب را نمی‌گویم، نرم‌افزار قوی از همه‌یِ این‌ها درست‌تر می‌گوید !!

[MEHDI]

من البته با جرزنی اینرا حل کردم پس جواب را نمی‌گویم، نرم‌افزار قوی از همه‌یِ این‌ها درست‌تر می‌گوید !!

So who was right – or were all four wrong? We urge you to study the above position and draw your own independent conclusion. If you can solve the puzzle in your head you should give yourself a contortionist's pat on the back.
if you cheat, give yourself a punch in the groin.

[Russell]

So who was right – or were all four wrong?

همه از دم اشتباه می‌کردند !! بازی پات می‌شود

[MEHDI]

همه از دم اشتباه می‌کردند !! بازی پات می‌شود

بله میدونم خسته شدی و با کمک نرم افزار به این نتیجه رسیدی! آخرش نوشتم :

If you can solve the puzzle in your head you should give yourself a contortionist's pat on the back.
if you cheat, give yourself a punch in the groin

[Russell]

بله میدونم خسته شدی و با کمک نرم افزار به این نتیجه رسیدی! آخرش نوشتم :

If you can solve the puzzle in your head you should give yourself a contortionist's pat on the back.
if you cheat, give yourself a punch in the groin

البته بنظرم حرکتی نمانده بود که چک کنم، برای همین آنچنان جرزنی هم نبود

[MEHDI]

البته بنظرم حرکتی نمانده بود که چک کنم، برای همین آنچنان جرزنی هم نبود

در محاسبات پیش بینی امکانات غیرمنتظره را باید کرد و صرفا براساس پیش فرض های ذهنی نباید عمل کرد. همین یک قدم جلوتر را محاسبه کردن و تسلیم نشدن خودش تفاوت ها را رقم می زند. حالا که حل شده دیدی چقدر ساده بود با خودت فکر می کنی که می تونستی خودت هم به جواب برسی ولی افسوس که خودت را از این لذت محروم کردی!