MAO (MA): The Chinese knight, which is a Rider, moving along a bent line to the arrival square of a normal Knight, first orthogonally then diagonally. The Mao can be interfered with on the intervening square.
MOA (MO): The Chinese knight, which is a Rider, moving along a bent line to the arrival square of a normal Knight, first diagonally then orthogonally. The MOA can be interfered with on the intervening square.
white kf6 rc7 bb6f5 sh2h3 moa4
black kd5 sf7 pd6e3h5 mae5e6 moc2g2
#3 (7+9)
MAO e5, e6
MOA a4; c2, g2
1.Bb6-a5 ? threat:
2.MOa4-b6 +
2...Kd5-d4
3.Ba5-c3 #
1...Kd5-d4
2.Ba5-c3 +
2...Kd4-d5
3.MOa4-b6 #{
}
{(exchange of W 2nd & 3rd MOVES between threat and variation)}
1...MOc2-b4
2.MOa4-c3 +
2...Kd5-d4
3.Ba5-b6 #{(Switchback)
}
{(exchange of only the SQUARES of W 2nd & 3rd moves between
threat and variation, the pieces remaining the same!
Also, exchange of only the PIECES of W 2nd & 3rd moves between
the 2 variations, the squares remaining the same!)}
1...MAe5-d3{(2.MOb6+? MAc5!)}
2.Bf5*e6 +
2...Kd5-e4
3.Rc7-c4 #
2...Kd5-d4
3.Rc7-c4 #{
}
{(selfblock on d3)}
but
1...e3-e2 !
1.MOa4-c3 + ?
but
1...MOc2-d4 !
1.Sh3-f4 + ?
but
1...MOg2*f4 !
1.Sh2-g4 ? threat:
2.Sg4*e3 +
but
1...h5*g4 !
1.Sh2-f1 ! threat:
2.Sf1*e3 +
2...MOc2*e3{display-departure-square}
3.MOa4-c3 #
2...MOg2*e3{display-departure-square}
3.Sh3-f4 #
1...MAe5-d3{(Opens Mao line e6-d4/f4, closes Moa line c2-d4/e3)}
2.Sh3-f4 +
2...MOg2*f4
3.Sf1*e3 #
2...MAe6*f4
3.MOa4-c3 #
1...MAe5-f3{(Opens Mao line e6-d4/f4, closes Moa line g2-e3/f4)}
2.MOa4-c3 +
2...MOc2-d4
3.Sf1*e3 #
2...MAe6-d4
3.Sh3-f4 #
1.Sh2-f3 ? threat:
2.Sh3-f4 #
but
1...MAe5*f3 !
1.Sh3-g5 ?
but
1...Sf7*g5 ! {
(C+ by Popeye 4.83 and WinChloe 3.45)}
Line opening and closing of Mao/Moa lines by Mao e5
No.1447