Top 10 hardest — Wordoku
№ 16370
Givens: 24 · Difficulty: 1101
№ 16153
Givens: 26 · Difficulty: 757
№ 17096
Givens: 26 · Difficulty: 542
№ 16148
Givens: 26 · Difficulty: 511
№ 16374
Givens: 25 · Difficulty: 472
№ 16504
Givens: 26 · Difficulty: 436
№ 16979
Givens: 25 · Difficulty: 404
№ 16997
Givens: 26 · Difficulty: 346
№ 16717
Givens: 26 · Difficulty: 332
№ 16413
Givens: 26 · Difficulty: 320