Yves Costel of Wbridg5 reports that his bot does in fact use single-dummy as defender, but there was a glitch (due to a combination of things). East ‘thinks’ there is no way to beat the contract. POSTSCRIPT: Erik Liu reports that Synrey Bridge employs single-dummy as declarer but only double-dummy as defender. If defending double-dummy in the end game, East would assume declarer ‘sees’ all the cards and will take the winning position, so ruff now and be endplayed or be endplayed later.Īs Barry Rigal notes in his editorial comment that this deal both shows the strength and weakness of bridge bots. At both tables East ruffed and led a heart into declarer’s AQ, taking declarer off the end guess of an endplay or heart finesse. Declarer won the diamond ten, and set about stripping the hand, spade king, spade ruff, diamond to the king, spade ruff, diamond ace, club ace, club king, and spade ace. Board 64Ħ♣ was reached at both tables, and at both tables the play was identical. In a rematch between last year’s finalists, the last board of the match demonstrated the nature of robot play.

The final was a rematch between last year’s finalists, with the same result, Wbridge5 (with a 12.9 IMP carryover) defeating Synrey Bridge, 150.9 – 132.Īlso see 2018 IBPA Alan Truscott Award also see the WBF webpage In two close semifinal matches Wbridge5, with a 3.7 IMP carryover, defeated Q-Plus Bridge by the margin of the carryover, 158.7 – 155 and Synrey Bridge bested Micro Bridge (Micro Bridge had a 1.7 IMP carryover) 87 – 78.7. The final standing (on a 20 VP scale) of the 32-board round robin (bye=0): This year’s contestants were two-time defending championship, Wbridge5 (France), last year’s runner up, Synrey Bridge (China), Micro Bridge (Japan), Q-Plus Bridge (Germany), Bridge Baron (USA), Shark Bridge (Denmark), Meadowlark Bridge (USA), RoboBridge (The Netherlands), and TCS BridgeBot (India). The 22nd World Computer-Bridge Championship attracted nine bridge bots, each entry playing as a team of four identical bots. Entries 2018-Complete Results 22-Year History

Ace of spades game world championship