EPSILON

by Michael Howe (1994)
Epsilon is an extension of game of Delta. Si gioca su un tavoliere più grande, con lo scopo di ottenere un filetto di 5 pedine, anzichè di 4 come in Delta. Viene inoltre giocato con una cadenza doppia bilanciata di mosse.

RULES

It's played on a larger board with a five-in-a-row winning condition instead of four-in-a-row.
It's also played in balanced double-move fashion, which help correct the main flaw of Delta: for the first nine moves of Delta, the first player in that game always has as many or more pieces on the board as the second player. In epsilon, numerical superiority alternates on the move.
The board is 7 squares by 7 squares. Each player has 15 pieces. The objective of the game is to get five pieces in a row or to deprive the opponent of legal move.
White play first by placing a single piece anywhere on the board except the center square.
Black play second by placing two pieces anywhere on the board.
Every more thereafter, a player moves a piece two o more squares and placed a new piece, called the "follower" on the last square passed over. The player then makes another such move using any piece except the new follower, and places another follower. A move is comprised of both parts, and a player who cannot make both parts of his move loses. If a player forms five in a row on the first part of his move, he vins immediately and is not required to make the second part.
If a player has all 15 pieces on the board, he continues to move normally. On the first part of the move, he may use any of his other pieces on the board as the follower. On the second part of this move, he may use as the follower any of his pieces except the first mover and first follower. If 15 moves are made by both player after all the pieces are on the board, with neither player winning, the game is a draw.

SIMPLY GAMES

Baggio-Vecchi 1-0
1.c3 c4/d2
2.c3e3/e3e5 c4c1/d2b4+
Menace c3c5/b4d2#
3.e4c4/e5c5+++ Resign (diagr.1)
Menaces: d3d1/c4e2#, d5d7/c5e5#, c5e7/e7c7#.

diagr. 1

Vecchi-Baggio 1-0
1.c4 c2/e4
2.c4f7/f7c7 e4c6/c6c3+
Menace c4c6/d5b3#
3.d7b5/c7e5++++ Resign
(diagr.2)
Menaces: b5b7/e5/g7#, c6a6/b5d7#, e6g6/e5e7#, e5g7/g7g5#

diagr. 2

Baggio-Keller 1-0
1.c3 d4/e5
2.c3f3/f3d5 e5c7/c7c4
3.e4e6/d5f3+++ Resign
(diagr.3)
Menaces: f3d1#, e3e1/f3d3#, f3f7/f7d7#

diagr. 3

Dulcih-Baggio 0-1
1.d3 c3/d5
2.d3g6/g6e6 c3c7/c7f4
3.f5d3/d3b5 d5d3/e5c5+++++
4.Resign
(diagr.4)
Menaces: f4d2/c5e7#, f4c7/c7e7#, f4c1/c1e1#, d5d7/c5e5#, c5e7/e7c7#

diagr. 4

Dulcich-Vecchi 1-0
1.d3 c4/d4
2.d3f5/f5c5 c4a2/d4f2
3.e4b4/d5d3++ f2f5/a2g2
4.b4d2/d3b1+++ Resign
(diagr.5)
Menaces: b1d1#, c5c7/d4b4#, d4d6/d6b6#

diagr. 5

Vecchi-Dulcich 0-1
1.c3 e4/c5
2.c3a5/a5a1 c5c1/e4c4
3.b4d2/a2a7+ c2f5/c1a3+++
4.d2f4/c3a5 d4f6/b2d4++++++
(diagr.6)
Menaces: a3c1#, c4a2 o c4e2/a2c2# (e2b2#), e4c2 o e4g2/c2a2# (g2b2#), c4c7/c7g7#, e4b7 o e4g2/b7g7# (g2g7#), f5d7/d7g7#

diagr. 6

5.b4b2/a6d6 c4a4/c3c5#

Baggio-Howe 1-0
1.c3 d4/c5
2.c3e3/e3e6 d4f4/c5e3+
3.e6c4/c4c6+++ e3e1/e1a5
4.c5c3/d5b5+++++++ Resign
(diagr.7)
Menaces: d3b1#, d3d1/d1b3#, c3c1/b3b3#, e5c7#, b5b7/b7d7#, e5e7/e7c7#, c4e6/e6g4#

diagr. 7

Howe-Baggio 0-1
1.d5 c4/e3
2.d5d2/d2b4 c4f4/f4d6+
3.d3d5/d5f7 e5c5/d6f4++
4.Resign
(diagr.8)
Menaces: e3e1/f4d2#, e5g5/f4d7#

diagr. 8

The best defence is f7f5.
- if e6g4 thne e5e7/f4d6#
- if e6c6 then e5g5/e4e6# or e5e7/d5f5#.
The best is c3e1.
- if d4d2 then e3e1/c5e3#
The best is 4.f7f5/c3e1. Then e4c2/c2c4+++... (diar. 9)
A lot of menaces!

diagr. 9

Vecchi-Baggio 0-1
1.b6 b4/d2
2.b6e3/e3b3 d2f4/b4e7
3.d4g7/c3e5+ e3c3/d6a3+
4.f6b6/e5c7+++
(diagr.10)
Menaces: d5f5/c7e5#, b3e6/d4g6 or g7e5#, b3f7/f7f5#, b6-f6.

diagr. 10

4.... e7e5/f4d2+++
5.Resign

Baggio-Vecchi 1-0
1.c3 d4/f2
2.c3e3/e3e6 f2b2/d4f2+
3.e5c3/c3e1+ c2c5/c5e5
4.d3b3/b3b5+ c4c6/e3g5+
5.e6g4/e1e4 c6f6/d5d7++
(diagr.11)
Menaces: c5c7/g5g7#, d6b6/d7d5#

diagr. 11

6.e4c6/b5d3+ Resign
Menace g4d1#.

Baggio-Dulcich 1-0
1.c3 e4/c5
2.c3e5/e5c7 e4e6/e6c4++
3.c7a5/d6g6 c5c7/d5b5++++
(diagr.12)
Menaces: c4c2/b5d3#, b5b3/b3d3#, e5e3/e3c3#, c4e6/e6g4#

diagr. 12

4.d4b2/g6e4 c5e3/e5g3+++
5.f5d5/b2e2 g3e1/c4a2+
6.c3c5/a5c3+++ Resign
(diagr.13)
Menaces: e4b1/b1d1#, e5g5/e4e6#, e4g6/g6g4#

diagr. 13

Keller-Baggio 0-1
1.a2 c4/c2
2.a2a5/a5c3 c2e4/e4e6
3.b4b6/b6e3 e5c5/e6e4++
4.b5d7/d7f5 d3f1/e4c2++
5.a4a2/c6a4++
(diagr.14)
Menaces: c3a5/e6a6#, c3a5/d4a1#

diagr. 14

5. ... c5c7/c5a5
6.a3d6/f5f2+ e5g3/d5f5++!
(diagr.15)
Menaces: c6e4/f1b1#, c6e4/g3g6#

diagr. 15

7.f3d5/e6g6, f1b1/d3d1+
(diagr.16)
- If 8.e4g2/b5b2 or c3a1 then f5d3/e5g5#;
- If 8.e4g2/g6g4 than c2e4/d2b2 o d1b3#.

diagr. 16

8.Resign

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since 11 Gen. 1999; Last Updated: 11 Gen. 1999