Mat Plus Challenge No.1

Aaron Hirschenson
Israel







#2*v 8+11
 

 *1.Bc3?1.Bf6!
...Qg7:2.Sc32.Qd6-
...Qb2:2.Sf6-2.Qd6
...Qg3/h2(d)2.Sf62.Sc3
  ...Bg7:! 
(thr. 2.Qe5#)
ww: Lf4-d6 Bc3 Bf6

Aaron Hirschenson
Israel







#2*v 12+9
 

 *1.d3?1.d4!
...Qc52.Sd32.Qh2-
...Qa32.Qe5:-2.Qh2
...Sf5:(d)2.Qe5:2.Sd3
  ...Qb4! 
(thr. 2.Qc1/Qd2)
ww: Lb2-h2 Bd3 Lb2-e5

Aaron Hirschenson
Israel







#2 12+10
 

 *1.Be2?1.Be6!
...Qf7:2.Se22.Qe5-
...Qf12.Se6-2.Qe5
...Qc7:(d)2.Se62.Se2
  ...Qd6! 
(thr. 2.Ra4/Qc4)
ww: Fc4 Be2 Be6

Aaron Hirschenson
Israel







#2 7+10
* 1.Sge5? 1.Se3!
... Bd2 2.Qh8 2.Rc4: -
...Bd6 2.Qf2 - 2.Rc4:
...Sd2/6 (d) 2.Qf2 2.Qh8
...Sd3!
(thr. 2.Qf4)
ww: Fc4 Lh8-d4 Lf2-d4

Aaron Hirschenson
Israel







#2 10+8
1.Se6? 1.Sf5? 1.Se7:!
...Sc6 2.Qf5 2.Qe6 -
...Rf2 2.Bd4: - 2.Qe6#
...Rb6: - 2.Bd4: 2.Qf5#
...Se6:! ...Sf5:!
(thr. Qg7 .. Qf6)
ww: Be6 Bf5 Fd4

Aaron Hirschenson
Israel







#2 10+10
* 1.Sc4? 1.Sd7!
...Qh7 2.c4 2.Sb6: -
...Qc2: 2.Qd7 - 2.Sb6:
...Sd4 - 2.Qd7 2.c4
...Rh7!
(thr. 2.Qc6:)
ww: b6? Bc4 Bd7

Note: Sc4:b6 & Sd7:b6

Aaron Hirschenson
Israel







#2 11+9
* 1.R6e3? 1.R6e4!
...Rd4: 2.Se3 2.Qf7 -
...Rc3: 2.Be4 - 2.Qf7
...Se6 (d) 2.Be4 2.Se3
...Sh5!
(thr. 2.Rf2)
ww: Lb3-f7 Be3 Be4

Yosi Retter
Israel







#2 13+9
1.Bd4? 1.Be1? 1.Bb4!
...Qb7 2.Se1 2.Qd5 -
...Qf1 2.Sb4 - 2.Qd5
...Qf6 - 2.Sb4 2.Se1
...Qf4! ...Sd2!
(thr. 2.Sb2)
ww: Ld5-d3 e1 b4

Yosi Retter
Israel







#2 9+8
1.Re2? 1.Rf3? 1.R3e5!
...Qf8 2.Be5 - 2.Se2
...Qd6 2.Sf3 2.Se2 -
...Qb2 - 2.Be5 2.Sf3
...Kc5! ...Kc5!
(thr. 2.Bf2)
ww: Be2 Bf3 Be5

Michel Caillaud
France







#2 3 Sol. 9+2
1.Se3! 1.Sf2:! 1.Ba4!
...Kf3: 2.Rf2: 2.Qe3 [2.Bd1]
...Kd3 2.c5 - 2.Qe3
...Kf1 - 2.c5 2.Rf2:
(zugzwang)
ww: Be3 Bf2 ?b5-BK

Marjan Kovacevic
Yugoslavia







#2 7+7
* 1.Bc6? 1.Qh4!
...Rd5 2.Re4 2.Sf7 -
...Rf7 2.Qd4: - 2.Sf7:
...Sd5 (d) 2.Qd4: 2.Re4
(~ 2.Re4 2.Qf6)
...Rg4!
ww: Ff4 Lc6-e4* ?d4
* = critical
(1.Bc6? Bf4: 2.Qf4:#)
(1.Qh4! Rg6/Rf8:,Rg5 2.Sg6,Qg5:#)

Marjan Kovacevic
Yugoslavia







#2 10+8
* 1.Rf3? 1.Rf5!
...Se3 2.d3 2.Sf2 -
...Ba3 2.Qf5 - 2.Sf2:
...Be3 (d) 2.Qf5 2.d3
(~ 2.d3 2.Rf4)
...Sd2:!
ww: Ff4 f3-d3* Bf5
* = critical
(1.Rf3? Ba6 2.Bd5#)
(1.Rf5! Kf5: 2.Bh7#)

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