No.509.6 (HG&PR)

No.509.6 by Henryk Grudziński & Paul Rãican – Correction to the versions published in March, 2014 (No.509.-509.5) and excluded from JF Retro&PG TT 2013/2014: “509.5 Extremely complex cook with with a cyclic Platzwechsel of a different triple of black pawns!! 1.d3 (Tempo) d5 2.d4 Bh3 3.g×h3-c8=Q e6 4.Q×b8-a6 Sh6 5.B×h6-f5 Ba3 6.b×a3-f8=Q K×f8- b4 7.e3 e×f5-d7 8.Bc4 Qg5 9.Qe6 f×e6-e7 10.f4 d×c4-f7 11.Sd2 Kc3. (Dirk Borst)”. (JV)

Definitions:

Take & Make: Having captured, a unit must immediately, as part of its move, play a non-capturing move in imitation of the captured unit from the capture-square. If no such move is available, the capture is illegal. Promotion by capture occurs only when a pawn arrives on the promotion rank as the result of a take&make move. Checks are as in normal chess: after the notional capture of the checked K, the checking unit does not move away from the King’s square.