8/28/2010 — Endgame Challenge

FEN: 8/5k2/2RP4/P7/6p1/8/6K1/r7 w - - 0 1
OTBET:
1. d7 Ke7 2. Rd6 Kd8 3. a6 Ra3 4. Kf2 Rf3+ 5. Ke2 Ra3 6. Ke1 Re3+ 7. Kd2 Ra3 8. Ke2 Ra2+ 9. Kf1 Ra5 10. Kf2 Ra3 11. Kg2 Ra1 12. Kg3 Ra4 13. Kh4
8/27/2010 — Accurate Calculation

FEN: 3Q4/6kp/6p1/1p1nP1N1/2p5/4nP2/2P3PP/q1b3K1 w - - 0 1
OTBET:
1. Ne6+ Kf7 2. Qd7+ Ne7 3. Ng5+ Kf8 4. Qd8+ Kg7 5. Qxe7+ Kh6 6. Nf7+