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bgu1

1. a) 1Rc4=wR 2.Sf6=bS Nxc4-c1 B 3.Qxf6-h7+ Bxg6-g7#

b) 1Nc4=wN B 2.Sc5=bS Bxc4-b2 C 3.Qxc5-a4+ Rxb4-b5#

c) 1Bc4=wB C 2.Sd6=bS Rxc4-e2 A 3.Qxd6-b5+ Nxa5-c6#

: , 4 AB-BC-CA, , 4 , .

2. 1Rg2=wR 2.Rxg5-e7 Qd3=wQ! (2Qd2=wQ?) 3.DGa8=bDG Kxf4-a5#

1Bh4=wB 2.Bxf2-h2 Qd2=wQ! (2Qd3=wQ?) 3.DGa7=bDG Kxe6-a6#

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3. a) 1.VAb2 LOxb2-d1 2.PAh1 Qd7+ 3.Kxd7-h3+ LOxc8-h2#

b) 1.PAb5 LOxb5-a6 2.VAa1 Qc7+ 3.Kxc7-c3+ LOxc8-b2#

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bgu2

4. a) 1Qxb7 2.Rb1 Qxb1 3.d8Q Qb8 4.Qd2+ Kxd2=

b) 1Bxd7 2.Ra4 Bxa4 3.c8Q Be8 4.Qg4+ Kxg4=

c) 1Bxc7 2.Ra5 Bxa5 3.b8Q Bxc3 4.Qg3+ Kxg3=

, , .

5. a) 1.nNAg6! nPAxe4 2.nNc4!! nPAxc4#

b) 1.nVAb7! nNAxe4 2.nVAc8!! nNAxc8#

c) 1.nPAa4! nVAxe4 2.nPAa8!! nVAxa8#

, .

6. Set:1VAc4 2.cRc1=cQ+ PAxc1#

Sol: 1.cRh5=cQ PAc6 2.cQb5=cS+ Gxb5#

1.cRh4=cQ Ge6 2.cQc =cS+ VAxc4#

.

bgu3

7. a) 1.Qf5+! Rxf5(Qa5)! 2.exf5(Rf1) Re1 3.f6+ Sxd4(Pd5)# [1Rxf5(Qc5)?]

b) 1.Qe5+! Bxe5(Qc5)! 2.dxe5(Bb2) Bc1 3.e6+ Sxe4(Pe5)# [1Bxe5(Qa5)?]

, .

8. 1.Bc4 DOe3 2.Be6 DOe7 3.Rd3 Ge5#

1.Rxc3 DOd5 2.Rc6 DOb7 3.Gd4 Gd5#

1.Rg3 DOd3 2.Rg6 DOh7 3.Bd3 Gf5#

- .

9. 1.Sc5+? Sxc5 2.d3+ Sxd3 3.Sd2+ Sxd2!

1.Re5+? Rxe5 2.Sg5+ Rxg5 3.f3+ Qxf3!

1.Ke7! (2.Bf5+ Kxd5 3.Be6+ Ke4 4.Bd5#)

1Sc3 2.Sc5+ Sxc5 3.d3+ Sxd3 4.Sd2#

1Qh3 2.Re5+ Rxe5 3.Sg5+ Rxg5 4.f3#

, .


bgu4

10. 1.Bc6?, 1f4!, 1.Ba8?, 1Ra1!

1.Bb7! (2.Rd5+ Ke4 3.Rxd3+ Kxd3 4.Qxd2+ Bxd2#)

1f4 2.Sg6+ Bxg6 3.Rf6+ (Rg6+?) Rd6 4.Qxf4+ Bxf4#

1cxb3 2.Rb5+A Bxb5 3.Rg6+B (Rf6+?) Rd6 4.Qe3+ Bxe3#

(1Be4 2.Rg6+B Rd6 3.Rb5+A Bd5 4.Qe3+ Bxe3#)

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11. Set: 1Qh1 2.Qg5+ Kd4 3.Rf4+ Ke3 4.Rxf2+ Kd4 5.Se4+ Kd3 6.Rf3+ Be3#

Tries:1.Sa4? (zz),1Qh1 2.Bd4+ Kd2 3.Bxf2+ Kc1 4.Qc4+ Kd1(d2) 5.Qe2+ Kc1 6.Be3+ Bxe3#, 1Qxh3!

1.Qd6?(zz),1Qh1 2.Sd5+Kd2 3.Rxf2+Kd1 4.Rd2+Kxd2 5.Qb4+Kd1 6.Se3+Bxe3#,3gxf2 4.Qf4+Kd1 5.Se3+Kd2 6.Qxf2+B(R)xf2#, but1Qxh3!

Sol: 1.Bc2! (zz)

1Qh1 2.Qg5+ Kd4 3.Rf4+ Ke3 4.Rxf2+ Kd4 5.Sab5+ Kc4 6.Rf4+ Bd4#

1Qxh3 2.Qe5+ Kd2 3.Se4+ Ke3 4.Sxg3+ Kd2 5.Se4+ Ke3 6.Qg5+ Rxg5#

- , , , 14 .

12. a) 1...a1Q! 2.a8B!! Q:a8(wK=rB) 3.rBf4 c1B! 4.b:a8R(bK=rQ)+! rQ:a8(wrB=rR)#

b) 1a1R! 2.a8S!! R:a8(wK=rS) 3.rSb3 c1S! 4.b:a8Q(bK=rR)+! rR:a8(wrS=rQ)#

, 6 8 8, .

bgu5

13. a) 1.hnLEb1(wLE)+ Ka8! 2.LEb6+ hnNAg6(bNA)#

(3.NAh4?? hnNA in black phase) (3.LEh7?? closed line)

b) 1.VA:e3(wVA) Kb7! 2.VAb6+ hnLEe4(bLE)#

(3.LEh7?? hnLE in black phase) (3.VAh6?? closed line)

c) 1.hnNA:d2(wNA) Ka7! 2.NAb6+ hnVAf8(bVA)#

(3.VAh6?? hnVA in black phase) (3.NAh4?? closed line)

, -, , , 6.

- . ( ) McCracken.

14. The clear winner the tandem operation of the Knights is awesome, and the play is free of other distractions. The most enjoyable problem to solve. The wB wants to go home, but he must first be relieved of shielding duty. bS volunteers for the job, but must keep his own K shielded along the way, with a little help from wS. The amusing result is that wS leads the bS up the diagonal, drops him off at f7, then returns down to b3.Solution: Retract: -1...Sa1-b3 -2.Sc4-a5+ (The only way to avoid retro-stalemate. The two Knights need to get past each other on a narrow staircase) -2Sb3-a1 -3.Sb6-c4 Sa5-b3 -4.Sd5-b6+ Sc4-a5 -5.Sc7(f4)-d5Sb6-c4 -6.Se6-c7(f4)+ Sd5-b6 -7.Sf4-e6 Sc7-d5 -8.Sd5-f4+ Se6-c7 (The wS now goes all theway back in order to make way for the wB) -9.Sb6-d5 Sd8-e6 -10.Sc4-b6+ Se6-d8 -11.Sa5-c4 Sd8-e6 -12.Sb3-a5+ (at least 22 successive Knight moves preceded the diagram position) c6 c5 -13.Bc4-f7 Sf7-d8+ -14.Bf1-c4 c7-c6 -15.e2-e3 e3xBd2 -16.B~-d2 and the position unlocks.

15. The motivation of 4 of 5 shield changes is simply the fact that Black cannot remain idle admirable! The wS is eventually going NE to unpromote. However, at the diagram, blackmust do something other than burn precious P tempi, so wS takes over the screening role. 'Foresightfully' black realizes that d5 must be reserved for a P, and a bS on c7 cannot escape without use of that square. bS was better placed on d7 and we must get him back there. This requires three more changes of role. Only now can wS go unpromote. A timely wS uncapture and fifth role change frees bS for good. Solution: Retract: -1.a7xRb8R+ Sc5-d7 -2.Sd7-e5+ Sd3-c5 -3.Bf7-g8 Sb4-d3 -4.d3-d4 Sd5-b4 -5.e2xPd3 Sc7-d5 -6.Se5-d7 Bg8-h7 -7.Sc4-e5(Not -7.c2-c3? Bh7-g8 -8.Bg8-f7 f4-f3 -9.Sf7-e5 f5-f4 -10.Sh8-f7 d4-d3 -11.Bf7-g8 Bg8-h7 12.h7-h8S d5-d4 -13.h6-h7 h7xg6 and black is retro-stalemated) Bh7-g8 -8.Sa3-c4 Bg8-h7 9.Sb5-a3 Sd5-c7 -10.Sc7-b5+ Bh7-g8 -11.Bg8-f7 Se3-d5 -12.Bf7-g8 Sg4-e3 -13.Bg8-f7 Se5-g4 -14.Bf7-g8 Sd7-e5 -15.Sd5-c7 Bg8-h7 -16.Se3-d5 Bh7-g8 -17.Sc4-e3 Bg8-h7 -18.Se5-c4 Bh7-g8 - 19.Bg8-f7 f4-f3 -20.Sf7-e5 f5-f4 -21.Sh8-f7 d4-d3 -22.Bf7-g8 Bg8-h7 -23.h7-h8S d5-d4 -24.h6-h7 h7xSg6 -25.Se5-g6 Sc5-d7 -26.Sd7-e5+ and everything unlocks.


bgu6

16. 1.Qb7! (2.Sa5+ Kd4 + 3.Qd5 + Bxd5#)

1...Sxa3 2.Qb6! ~ 3.Qxc5+! Kxc5#

1...Bxa3 2.Sc8! ~ 3.Qxb5+! Kxb5 #

3.

17. 1...dxe2 2.Qxg2+ Qxg2#,1...exd5 2.Rxg2+ Qxg2#

1.Qe5(d6)? (2.Rxg2+ Qxg2#), 1f3 2.Qxh2+ Qxh2#, 1...dxe2!

1.Rxe6? (2.Qxg2+ Qxg2#), 1...f3!

1.Be5! (zz)

1...dxe2 2.Qxg2+ Qxg2#, 1...f3 2.Bxh2+ Qxh2#, 1...exd5 2.Rxg2+ Qxg2#

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18. 1.Kg8 2.Kf8 3.Ke8 4.Kd8 5.Kc8 6.K:b7 7.Ka6 8.Ka5 9.Kb4 10.Kc3 11.Kd2 12.Ke1 13.Kf114.K:g1 15.Kf1 16.g1S 17.S:f3 18.Kg1 19.Kh1 20.Sg1 Sf2#

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