On Trax


On Trax
The New Zealand Trax Association Newsletter. Issue: 2

An Interesting Game

Here is an interesting game, played between Donald Bailey (white) and Tom Siegenthaler (black). It is interesting from the point of view of the counterplay between threat and counter-threat.
(Note - the notation has been changed from the original article to reflect the new notation).
1 @0+ 
2 @1\ 
3 B2\A less common though safe opening
4 A2+An unconventional move - again safe
5 B0/TrapWhite sets up an opening trap (the position is shown to the right), where there is only one safe defence. The trap is:
C2/ A0\ any D1/ any win
C2\ A4/ any D4\ any win
C1/ D1+ any D5\ any A5/ any win
6 C3\Black choses the only safe defence.
7 D3+White continues with the attack, forming an edge on the top (D0/ any A1\ any win).
8 A4+Black makes the required counter-attack to avoid losing to the edge.
9 @2+This thoroughly kills the black attack, and leaves 2 threats - the edge across the top and a 4 stage threat on the right hand side
F1/ any D6+E5\ F5\ any win
 E6\ F6+ any win
10 C0/Black caps off the edge while making an attack. This is a faulty move since it does not defend the white 4 stage threat on the right.
11 F2+White defends both the attack and edge, while maintaining the 3 stage threat on the bottom right. This lets black off the hook - F1+ would win for white:
F1+ any D7+E6\ F6\ any win
 E7\ F7+ any win
12 G2\Let off the hook, black kills the 3 stage threat while setting up his own 4 stage across the top
B0\ any C0/D1/ G1+ any win
 any G2/ any win
13 C0+Destroys the threat by killing a critical corner.
14 D7\Black attacks, hoping to use the corner to later link either the vertical or horizontal line
15 E7\The only safe defence. E6+ loses to C8/ any E8\ any win
16 E1+Black realises that white also has a strong vertical line prospect. This move continues pushing the black line while slowing down the white line. It also creates a black L (G1/).
17 F7\White attacks, partially turning back the black line.
18 F8\Black counterattacks with an unconnected line (H5+ completes the line)
19 E0/White turns back the other end of the line threat by linking it to the L. This kills the horizontal line threat that was building, and also sets up an L in the top left corner (B1/)
20 E0/This defuses the white L while reforming the black L (G1/).
21 H5+White makes an unconventional defence of the new L. In this instance, the conventional defences do not work. This move also sets up a 4 stage threat along the bottom and right hand sides
H6+ any C11/ any H11\ any win
22 G2+Black reforms the line attack and temporarily defuses the 4 stage threat by providing a counter-attack (H3/).
23 F0/White defends the line threat
24 G1+This allows Black to straighten the line again later, and sets up a 4 stage loop line threat
H1/ any I6/H5/ I5+ any win
 I5/ I4+ any win
25 I6\White kills the critical corner while setting an L (I5/). Note that black has a counter-attack to the other 3 stage threat (H7+, H4+).
26 H3\Black kills both threats anyway, setting up his own 2 stage (H1/) and 3 stage
J6+ any J3/ any win
27 H7+White kills both threats while setting up 3 more of his own, an L, and edge and a loop line threat:
I11\ any win
C12/ any H12\ any win
D3+ any D1\ any win
28 J7+This kills the L and defuses the loop line threat, but ignores the edge. Killing all 3 threats is quite difficult. Possibly 28 F12\ may be the only safe move as black can use it to give his own edge at the bottom. Black can then defend white's counter-attack with 30 J6\, defusing the loop line threat and forming a black L (J3/)
29 C12/White activates the edge to win.
30 B10+
31 H12\
Final position
TRAX is the common law mark of David Smith and is used to identify his tile game and equipment. Rules of TRAX copyright 1981, 1984, 1987, 1990, 1998 and 2017 David Smith, Christchurch, NZ.
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