Day 421: Development punish
Lesson of the day
Punishing lazy development: half of your opponent's army is asleep on its starting squares, which means you outnumber him where the fight is. Count not the pieces on the board but the pieces in play — if five or more of his pieces have never moved, look for a forcing attack. The sign is a development lead plus open lines toward his king. Strike immediately: give him two quiet moves and the advantage evaporates.
Warm-up
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
Core set
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
White to move — find the best continuation
Challenge
White to move — find the best continuation
Black to move — find the best continuation
Black to move — find the best continuation
Review
White to move — find the best continuation
White to move — find the best continuation
Day complete — every puzzle solved. See you tomorrow!
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