Shredder – CT800skip over animated chessboard
Shredder Mobile vs. CT800 1. e2-e4 c7-c5 (Sicilian Opening) 2. Ng1-f3 d7-d6 3. d2-d4 c5xd4 4. Nf3xd4 Ng8-f6 5. Nb1-c3 Bc8-d7 6. Bc1-e3 g7-g6 7. Bf1-c4 Bf8-g7 8. 0-0 0-0 9. Qd1-d2 Nb8-c6 10. Nd4xc6 Bd7xc6 11. f2-f3 Ra8-c8 12. Be3xa7 ... (That pawn is poisoned.) 12. ... Bc6-d7 13. b2-b3 b7-b6 14. Qd2-e3 Rc8-c5 15. a2-a4 Qd8-c7 16. Nc3-b5 Bd7xb5 17. a4xb5 Nf6-d7 18. c2-c3 Rf8-a8 19. Ba7xb6 Nd7xb6 (That was the poison in the pawn.) 20. Ra1xa8+ Nb6xa8 21. Rf1-a1 Na8-b6 22. g2-g4 e7-e5 (Why closing off the bishop?!) 23. Kg1-g2 Nb6xc4 24. b3xc4 Rc5xc4 (Blunder! Qc7-c8 to guard the back rank. In analysis mode, the CT800 comes up with Qc7-b8 after 185s.) 25. Ra1-a8+ Bg7-f8 26. Ra8-a3 d6-d5 27. Ra3-b3 ... (The counter-blunder. Qe3-h6 would have turned the game, probably even winning.) 28. ... Qc7-a5 28. Qe3-e2 Qa5-a4 29. Qe2-c2 d5xe4 30. f3xe4 Rc4xe4 31. h2-h3 Re4-e3 32. Rb3-b2 Qa4-a8+ 33. Kg2-g1 Re3xh3 34. Qc2-g2 Bf8-c5+ 35. Rb2-f2 Qa8-a1+ (The CT800 announces mate in 7.) 36. Qg2-f1 Bc5xf2+ 37. Kg1-g2 Rh3-h2+ 38. Kg2-f3 Qa1xc3+ 39. Kf3-e2 Bf2-g3+ 40. Qf1-f2 Rh2xf2+ 41. Ke2-d1 Qc3-a1#
It begins as a bread-and-butter Sicilian Opening until the CT800 offers a poisoned pawn, the classic “trapped bishop on a7” move. Shredder Mobile takes the bait, and they have an argument about whether the bishop is actually being trapped or not.
Neither of them was able to calculate this through in advance. It is just that the CT800 knows about trapped bishops and Shredder Mobile does not. Finally, Shredder Mobile has to agree that the bishop has no future, and the CT800 wins the bishop for two pawns.
The CT800 continues its attack on the queenside, targeting the pawns before they become dangerous. Then the CT800 blunders, taking one of the pawns too early instead of guarding the back rank first.
In analysis mode, the CT800 keeps the weak move until depth 9 is reached, which takes 185 seconds. Only then it sees the necessity to guard the back rank.
Shredder Mobile has the opportunity to turn the odds and probably even win the game. However, Shredder Mobile counter-blunders and retreats the rook instead of getting the queen to the black king.
From then on, the CT800 wins the game, announcing “mate in 7” by the 35th move.