# No.1383 (MC&SL)

 No.1383  Michel Caillaud & Sébastien Luce(France) Original Fairy problems JF-2019/I: January – June’2019

 No.1383 Michel Caillaud & Sébastien Luce France original – 11.03.2019 Solution: (click to show/hide) White Ka1 Qa2 Black Ka7 Rb8e3 Bc1f3 Pa4d5e4g2 s#26                                             (2+9) Black play only to double check 1.Qa2-b3 2.Ka1-b1 3.Kb1-c2 4.Qb3-d3 5.Kc2-c3 6.Kc3-d4 7.Kd4-e5 8.Ke5-f4 { } 9.Kf4-g3 10.Kg3-h3 Bf3-g4+ 11.Kh3-h4 12.Kh4-g5 13.Kg5-f4 Re3-f3+ 14.Kf4-e5 { } 15.Ke5-d4 16.Kd4-c3 17.Kc3-c2 18.Qd3-d2 19.Kc2-d1 Rf3-f1+ 20.Kd1-c2 { } 21.Qd2-b4 22.Kc2-b1 23.Kb1-a2 24.Qb4-b1 25.Ka2-a1 26.Qb1-a2 Bc1-b2# { (C+ by Winchloé 3.43)} Reciprocal black batteries (Zabunov) : Re3-Bf3 becomes Bg4-Rf3; Bc1-Re3 becomes Rf1-Bc1. Circuits by wK and wQ (circuit by wQ is with 6 different squares). (White must be careful of unwanted double checks 18.Kd1?? 23.Ka1??) (Authors)

### 4 Responses to No.1383 (MC&SL)

1. shankar ram says:

Indeed a rare condition! Normally when a condition like this is imposed on Black, it usually means:
a) Black obeys the condition, if possible, else he plays normally OR
b) Black obeys the condition, if possible, else he’s in stalemate

But here, there’s a third option:
c) Black obeys the condition, if possible, else he skips a move!

But well used by the composers to show a double Zabunov and 2 rundlaufs.

• Paul Rãican says:

The genre could be a sub-variant of: Black must check if able or does not play at all. In german, Schwarzschäche.

2. seetharaman says:

Ingenious use of the condition to create new batteries! Bravo.

3. dupont says:

One can see this problem as mainly a series one, where black must break the white series under particular circumstances.

In e.g. parry series, this particular circumstance is when black is in-check, when black can check in schwarzschache, and when black can double-check in this problem.

There are other variations on the same principle, such as “black play only to capture” (winchloe).