Change: pete99 vs Axel WehrenbergThis defense is named after Steven Medcalf, who discovered it in January 2006 after observing a Twixt game between Klaus Hußmanns and Peter Eirich, which Peter might have won, had he known the pattern. Thanks to Klaus Hußmanns for alerting me   View changes from previous version. (Word count: 556)

Change:  Twixt championship game at the 2006 World Boardgaming Championships (WBC) final Twixt game at the 2006 World Boardgaming Championships (WBC) and lost to David J. Bush.Bush (right in photo) . Also, this defense can be countered if it is   View changes from previous version. (Word count: 562)

Change: 2006 World Boardgaming Championships (WBC) final Twixt game at the 2006 World Boardgaming Championships (WBC) and lost to David J. Bush. Also, this defense can be countered if it is executed too far away from the edge of the board, as illustrated in pete99 vs György Csizmadia. There   View changes from previous version. (Word count: 546)

Change: Although white can block at peg h7, black can counter with j6.Double Threat, 2nd Attempt: 4.e10 threatens 6.e5 or 6.j6, but the double threat is too localized, and can be neutralized easily with something like 5.i4 or 5.h7:Now if White attempts e5, the   View changes from previous version. (Word count: 470)

Change: otherbottom side of the board. Some supporting white pegs are necessary.)There are too many variations to address in this space. Here are some examples of the Medcalf Defense in actual games:pete99 vs nie_wieszpete99 vs passengerAlan Hensel vs Klaus HußmannsAlan Hensel vs TimAxel   View changes from previous version. (Word count: 456)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 455)

Change: after observing a Twixt game between Klaus Hußmanns and Peter Eirich, which Peter couldmight have won, had he known the pattern. Thanks to Klaus Hußmanns for alerting me to this pattern, and to Peter Eirich for exploring it and explaining its origins.   View changes from previous version. (Word count: 456)

Change: 6.f56.f6 7.f4) doesn't work:And finally, tilting past it (4.j6 5.i9) doesn't work:(Note Black's double threat here: h7 or g10.)Rather than a typical attack on the Beam Defense, a double threat must be created.Double Threat, 1st Attempt: 4.e8 might work   View changes from previous version. (Word count: 435)

Change: Note(Note Black's double threat here: h7 or g10.g10.)Rather than a typical attack on the Beam Defense, a double threat must be created.Double Threat, 1st Attempt: 4.e8 might work in some contexts, but here it   View changes from previous version. (Word count: 430)

Change: Created by alhensel Jan 3 2007, 3:39 PM EST for: no reason given