[Retros] 14 consecutive checks

[Joost de Heer]

I found this today on Tim Krabbe's page 
(http://www.xs4all.nl/~timkr/chess2/diary.htm) :

343. 6 July 2007: 76 year old record broken

In item 308 of this Diary, I gave a few records for the construction 
task of consecutive checks. One of them was for consecutive discovered 
checks, in a legal position, with promoted pieces allowed. A. Lapierre 
had published a series of 13 in L'Échiquier in 1931 but now Sampsa 
Lahtonen (whom we already met in item 340) from Finland goes one better.

Sampsa Lahtonen
14 consecutive discovered checks
Original, 2007
B2Rq1B1/b7/1rRBs2b/3kS2R/2S2s2/rs1BK1sr/B2Rb1P1/2b1r2Q (14+14)
+---+---+---+---+---+---+---+---+

| B | . |   | R |*Q | . | B | . |

+---+---+---+---+---+---+---+---+

|*B |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   |*R | R | B |*S | . |   |*B |

+---+---+---+---+---+---+---+---+

| . |   | . |*K | S |   | . | R |

+---+---+---+---+---+---+---+---+

|   | . | S | . |   |*S |   | . |

+---+---+---+---+---+---+---+---+

|*R |*S | . | B | K |   |*S |*R |

+---+---+---+---+---+---+---+---+

| B | . |   | R |*B | . | P | . |

+---+---+---+---+---+---+---+---+

| . |   |*B |   |*R |   | . | Q |

+---+---+---+---+---+---+---+---+

1.Nf7+ Ngxh5+ 2.gxh3+ Bf3+ 3.Be2+ Nxd2+ 4.Nxa3+ Nb3+ 5.Rxc1+ Rb7+ 6.Bc5+ 
Nxd8+ 7.Ne5+ Nfe6+ Bravo. And in a new setting.

Lahtonen also gives a proof game for the legality of this position:
1.h4 c5 2.d4 g5 3.dxc5 gxh4 4.f4 e5 5.fxe5 b5 6.a4 bxa4 7.b4 d5 8.c4 d4 
9.e4 d3 10.Rh3 f5 11.Kf2 f4 12.e6 f3 13.Ke3 f2 14.Nf3 a5 15.c6 Ke7 16.c7 
Ba6 17.c8B a3 18.b5 a2 19.Ba3+ Kf6 20.e7 Qd6 21.e5+ Kg6 22.e6 Kf6 23.c5 
h5 24.Rg3 d2 25.Bd3 h3 26.b6 Nc6 27.Bc2 Be2 28.Bd3 h2 29.e8B a4 30.e7 
Na5 31.Bc6 Nb3 32.Nc3 h1R 33.Qg1 h4 34.Qh2 Re1 35.Qg1 h3 36.e8B h2 
37.Bd5 h1R 38.b7 d1N+ 39.Ke4 f1N 40.b8R Nde3 41.Rd1 Ra7 42.Rd2 a1B 
43.Nb5 Bb2 44.c6 Bc1 45.Bc5 a3 46.Rg7 R1h3 47.Bb7 Nd4 48.Ba8 a2 49.Rc7 
a1B 50.Ba2 Nb3 51.Bb4 Bd4 52.Rcb7 Ra3 53.c7 Nd5 54.Bf7 Nh6 55.c8R Nf5 
56.Bg8 Ng7 57.Rc6 Nf4 58.Rd8 Nge6 59.Rh7 Ba7 60.Rh5 Rh7 61.Ne5 Qe7 
62.Nd6 Qe8 63.Ndc4 Rb7 64.Bd6 Rb6 65.Bh7 Ng7 66.Bb7 Ng3+ 67.Ke3 Ke6 
68.Ba8 Kd5 69.Bg8+ Nge6 70.Qh1 Bh6