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|000001d0| 54 68 69 73 20 63 6f 6c | 6c 65 63 74 69 6f 6e 20 |This col|lection |
|000001e0| 77 61 73 20 63 72 65 61 | 74 65 64 20 77 69 74 68 |was crea|ted with|
|000001f0| 20 b7 20 43 68 65 73 73 | 20 34 2e 30 20 61 6e 64 | . Chess| 4.0 and|
|00000200| 20 6d 75 73 74 20 62 65 | 20 63 6f 6e 76 65 72 74 | must be| convert|
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|00000500| 00 11 a0 0f 0b 4b 50 4b | 20 28 70 61 72 74 20 31 |.....KPK| (part 1|
|00000510| 29 00 0d 80 01 00 01 08 | 03 75 10 22 00 30 00 1c |).......|.u.".0..|
|00000520| 40 00 00 16 57 68 69 74 | 65 20 74 6f 20 6d 6f 76 |@...Whit|e to mov|
|00000530| 65 20 61 6e 64 20 77 69 | 6e 2e 00 11 a0 0f 0b 4b |e and wi|n......K|
|00000540| 50 4b 20 28 70 61 72 74 | 20 32 29 00 0d 80 01 00 |PK (part| 2).....|
|00000550| 01 08 21 53 10 22 00 50 | 00 1c 40 00 00 16 57 68 |..!S.".P|..@...Wh|
|00000560| 69 74 65 20 74 6f 20 6d | 6f 76 65 20 61 6e 64 20 |ite to m|ove and |
|00000570| 77 69 6e 2e 00 0c a0 0a | 0b 4e 6f 74 20 4b 64 36 |win.....|.Not Kd6|
|00000580| 00 0f 80 01 00 01 08 54 | 72 20 41 52 10 51 40 00 |.......T|r AR.Q@.|
|00000590| 1f 40 00 00 16 57 68 69 | 74 65 20 74 6f 20 6d 6f |.@...Whi|te to mo|
|000005a0| 76 65 20 61 6e 64 20 77 | 69 6e 2e 80 01 01 00 12 |ve and w|in......|
|000005b0| a0 10 0b 44 6f 65 73 20 | 4b 64 33 20 77 69 6e 3f |...Does |Kd3 win?|
|000005c0| 00 10 80 01 00 01 08 14 | 73 20 30 36 20 40 46 38 |........|s 06 @F8|
|000005d0| 00 1c 40 00 00 16 57 68 | 69 74 65 20 74 6f 20 6d |..@...Wh|ite to m|
|000005e0| 6f 76 65 20 61 6e 64 20 | 77 69 6e 2e 00 11 a0 0f |ove and |win.....|
|000005f0| 0b 41 6e 6f 74 68 65 72 | 20 4b 50 4b 3f 00 11 80 |.Another| KPK?...|
|00000600| 03 00 01 08 24 74 11 15 | 8b 11 25 4c 31 e0 00 32 |....$t..|..%L1..2|
|00000610| 40 00 00 16 57 68 69 74 | 65 20 74 6f 20 6d 6f 76 |@...Whit|e to mov|
|00000620| 65 20 61 6e 64 20 77 69 | 6e 2e 80 01 01 40 03 00 |e and wi|n....@..|
|00000630| 0f 41 6e 64 20 57 68 69 | 74 65 20 77 69 6e 73 2e |.And Whi|te wins.|
|00000640| 00 17 a0 15 0b 54 68 72 | 65 65 20 6d 69 67 68 74 |.....Thr|ee might|
|00000650| 79 20 70 61 77 6e 73 00 | 14 80 05 00 01 08 16 66 |y pawns.|.......f|
|00000660| 30 40 41 42 30 60 61 62 | 82 86 80 01 53 40 00 00 |0@AB0`ab|....S@..|
|00000670| 31 41 20 63 6c 61 73 73 | 69 63 20 65 6e 64 67 61 |1A class|ic endga|
|00000680| 6d 65 20 70 72 6f 62 6c | 65 6d 2e 20 57 68 69 74 |me probl|em. Whit|
|00000690| 65 20 74 6f 20 6d 6f 76 | 65 20 61 6e 64 20 77 69 |e to mov|e and wi|
|000006a0| 6e 2e c0 01 01 00 83 42 | 6c 61 63 6b 20 6e 61 74 |n......B|lack nat|
|000006b0| 75 72 61 6c 6c 79 20 68 | 61 73 20 74 6f 20 63 61 |urally h|as to ca|
|000006c0| 70 74 75 72 65 20 6f 6e | 20 62 36 2e 20 48 6f 77 |pture on| b6. How|
|000006d0| 65 76 65 72 2c 20 69 66 | 20 62 6c 61 63 6b 20 70 |ever, if| black p|
|000006e0| 6c 61 79 73 20 31 20 2e | 2e 2e 20 61 78 62 36 2c |lays 1 .|.. axb6,|
|000006f0| 20 74 68 65 6e 20 57 68 | 69 74 65 20 73 69 6d 70 | then Wh|ite simp|
|00000700| 6c 79 20 70 6c 61 79 73 | 20 32 20 63 36 21 20 28 |ly plays| 2 c6! (|
|00000710| 69 66 20 31 2e 2e 2e 20 | 63 78 62 36 20 74 68 65 |if 1... |cxb6 the|
|00000720| 6e 20 20 32 20 61 36 21 | 29 2e 40 03 00 90 4e 6f |n  2 a6!|).@...No|
|00000730| 77 20 69 66 20 42 6c 61 | 63 6b 20 70 6c 61 79 73 |w if Bla|ck plays|
|00000740| 20 32 20 2e 2e 2e 20 62 | 78 63 36 2c 20 57 68 69 | 2 ... b|xc6, Whi|
|00000750| 74 65 20 73 69 6d 70 6c | 79 20 70 6c 61 79 73 20 |te simpl|y plays |
|00000760| 33 20 61 36 20 77 68 69 | 63 68 20 77 69 6e 73 2e |3 a6 whi|ch wins.|
|00000770| 20 49 66 20 42 6c 61 63 | 6b 20 64 6f 65 73 6e 27 | If Blac|k doesn'|
|00000780| 74 20 63 61 70 74 75 72 | 65 20 6f 6e 20 63 36 2c |t captur|e on c6,|
|00000790| 20 74 68 65 6e 20 57 68 | 69 74 65 20 77 69 6c 6c | then Wh|ite will|
|000007a0| 20 70 6c 61 79 20 33 20 | 63 78 62 37 20 77 68 69 | play 3 |cxb7 whi|
|000007b0| 63 68 20 61 67 61 69 6e | 20 77 69 6e 73 2e 00 10 |ch again| wins...|
|000007c0| a0 0e 0b 57 68 69 63 68 | 20 70 61 77 6e 3f 00 1a |...Which| pawn?..|
|000007d0| c0 03 00 01 08 23 65 70 | 21 27 30 32 36 54 55 50 |.....#ep|!'026TUP|
|000007e0| 40 42 46 51 57 b0 a9 c0 | 02 29 40 00 00 3c 44 6f |@BFQW...|.)@..<Do|
|000007f0| 65 73 20 69 74 20 6d 61 | 74 74 65 72 20 77 68 65 |es it ma|tter whe|
|00000800| 74 68 65 72 20 42 6c 61 | 63 6b 20 70 6c 61 79 73 |ther Bla|ck plays|
|00000810| 20 31 20 2e 2e 2e 20 4b | 78 66 36 20 6f 72 20 31 | 1 ... K|xf6 or 1|
|00000820| 20 2e 2e 2e 20 4b 78 65 | 36 3f c0 01 01 01 d8 54 | ... Kxe|6?.....T|
|00000830| 68 69 73 20 69 73 20 74 | 68 65 20 6f 6e 6c 79 20 |his is t|he only |
|00000840| 63 6f 72 72 65 63 74 20 | 6d 6f 76 65 2e 20 49 66 |correct |move. If|
|00000850| 20 42 6c 61 63 6b 20 70 | 6c 61 79 73 20 31 20 2e | Black p|lays 1 .|
|00000860| 2e 2e 20 4b 78 65 36 3f | 2c 20 57 68 69 74 65 20 |.. Kxe6?|, White |
|00000870| 70 6c 61 79 73 20 32 20 | 4b 65 34 20 61 6e 64 20 |plays 2 |Ke4 and |
|00000880| 6e 6f 77 20 42 6c 61 63 | 6b 20 69 73 20 69 6e 20 |now Blac|k is in |
|00000890| 5a 75 67 7a 77 61 6e 67 | 2c 20 65 2e 67 2e 20 32 |Zugzwang|, e.g. 2|
|000008a0| 20 2e 2e 2e 20 4b 78 66 | 36 20 33 20 4b 64 35 20 | ... Kxf|6 3 Kd5 |
|000008b0| 61 6e 64 20 62 6c 61 63 | 6b 20 71 75 65 65 6e 73 |and blac|k queens|
|000008c0| 69 64 65 20 70 61 77 6e | 73 20 66 61 6c 6c 2e 20 |ide pawn|s fall. |
|000008d0| 54 68 65 20 73 61 6d 65 | 20 74 68 69 6e 67 20 68 |The same| thing h|
|000008e0| 61 70 70 65 6e 73 20 61 | 66 74 65 72 20 32 20 2e |appens a|fter 2 .|
|000008f0| 2e 2e 20 4b 36 20 33 20 | 66 37 20 4b 65 37 20 34 |.. K6 3 |f7 Ke7 4|
|00000900| 20 4b 64 35 2e 0d 09 48 | 6f 77 65 76 65 72 2c 20 | Kd5...H|owever, |
|00000910| 61 66 74 65 72 20 31 20 | 2e 2e 2e 20 4b 78 66 36 |after 1 |... Kxf6|
|00000920| 20 32 20 4b 65 34 20 4b | 78 65 36 20 42 6c 61 63 | 2 Ke4 K|xe6 Blac|
|00000930| 6b 20 68 61 73 20 67 61 | 69 6e 65 64 20 74 68 65 |k has ga|ined the|
|00000940| 20 6f 70 70 6f 73 69 74 | 69 6f 6e 20 61 6e 64 20 | opposit|ion and |
|00000950| 74 68 65 20 67 61 6d 65 | 20 69 73 20 64 72 61 77 |the game| is draw|
|00000960| 6e 2e 20 49 66 20 57 68 | 69 74 65 20 69 6e 73 74 |n. If Wh|ite inst|
|00000970| 65 61 64 20 70 6c 61 79 | 73 20 32 20 4b 65 33 2c |ead play|s 2 Ke3,|
|00000980| 20 42 6c 61 63 6b 20 63 | 61 6e 20 70 6c 61 79 20 | Black c|an play |
|00000990| 32 20 2e 2e 2e 20 4b 65 | 37 21 20 28 6e 6f 74 20 |2 ... Ke|7! (not |
|000009a0| 32 20 2e 2e 2e 20 4b 78 | 65 36 3f 20 33 20 4b 65 |2 ... Kx|e6? 3 Ke|
|000009b0| 34 20 4b 66 36 20 34 20 | 4b 64 35 20 6f 72 20 33 |4 Kf6 4 |Kd5 or 3|
|000009c0| 20 2e 2e 2e 20 4b 64 36 | 20 34 20 4b 66 35 20 61 | ... Kd6| 4 Kf5 a|
|000009d0| 6e 64 20 42 6c 61 63 6b | 20 6c 6f 73 65 73 29 20 |nd Black| loses) |
|000009e0| 33 20 4b 65 34 20 4b 78 | 65 36 20 61 6e 64 20 61 |3 Ke4 Kx|e6 and a|
|000009f0| 67 61 69 6e 20 74 68 65 | 20 67 61 6d 65 20 69 73 |gain the| game is|
|00000a00| 20 64 72 61 77 6e 2e 40 | 03 00 06 44 72 61 77 6e | drawn.@|...Drawn|
|00000a10| 2e 00 12 a0 10 0b 44 6f | 65 73 20 4b 66 36 20 77 |......Do|es Kf6 w|
|00000a20| 69 6e 3f 00 0e 80 01 00 | 01 08 54 25 10 44 10 47 |in?.....|..T%.D.G|
|00000a30| 80 00 1f 40 00 00 16 57 | 68 69 74 65 20 74 6f 20 |...@...W|hite to |
|00000a40| 6d 6f 76 65 20 61 6e 64 | 20 77 69 6e 2e 80 01 01 |move and| win....|
|00000a50| 00 16 a0 14 0b 49 73 20 | 63 35 2d 63 36 20 63 6f |.....Is |c5-c6 co|
|00000a60| 72 72 65 63 74 3f 00 15 | 80 0b 00 01 08 43 63 20 |rrect?..|.....Cc |
|00000a70| 42 51 10 61 4d 9a 0b 6a | eb fc 80 00 39 40 00 00 |BQ.aM..j|....9@..|
|00000a80| 30 57 68 69 74 65 20 74 | 6f 20 6d 6f 76 65 20 61 |0White t|o move a|
|00000a90| 6e 64 20 77 69 6e 2e 20 | 49 73 20 31 20 63 36 20 |nd win. |Is 1 c6 |
|00000aa0| 74 68 65 20 63 6f 72 72 | 65 63 74 20 6d 6f 76 65 |the corr|ect move|
|00000ab0| 3f 80 01 01 00 19 a0 17 | 0b 43 61 6e 20 74 77 6f |?.......|.Can two|
|00000ac0| 20 6b 6e 69 67 68 74 73 | 20 77 69 6e 3f 00 13 80 | knights| win?...|
|00000ad0| 09 00 01 08 15 07 02 13 | 1d 10 33 74 84 5c 14 b3 |........|..3t.\..|
|00000ae0| 00 5b 40 00 00 55 49 74 | 20 69 73 20 77 65 6c 6c |.[@..UIt| is well|
|00000af0| 20 6b 6e 6f 77 6e 20 74 | 68 61 74 20 74 77 6f 20 | known t|hat two |
|00000b00| 6b 6e 69 67 68 74 73 20 | 63 61 6e 6e 6f 74 20 66 |knights |cannot f|
|00000b10| 6f 72 63 65 20 6d 61 74 | 65 20 61 6c 6f 6e 65 2e |orce mat|e alone.|
|00000b20| 20 42 75 74 20 68 65 72 | 65 20 42 6c 61 63 6b 20 | But her|e Black |
|00000b30| 68 61 73 20 61 20 70 61 | 77 6e 2e 00 19 a0 17 0b |has a pa|wn......|
|00000b40| 57 68 69 74 65 20 74 68 | 72 65 61 74 65 6e 73 20 |White th|reatens |
|00000b50| 4e 67 36 2b 00 12 c0 04 | 00 01 08 65 77 03 65 26 |Ng6+....|...ew.e&|
|00000b60| 34 01 a8 6e c8 a0 00 bf | 40 00 00 24 4c 6f 6f 6b |4..n....|@..$Look|
|00000b70| 73 20 62 61 64 20 66 6f | 72 20 42 6c 61 63 6b 2e |s bad fo|r Black.|
|00000b80| 20 57 68 61 74 20 63 61 | 6e 20 68 65 20 64 6f 3f | What ca|n he do?|
|00000b90| c0 01 01 00 64 57 68 69 | 74 65 20 63 61 6e 6e 6f |....dWhi|te canno|
|00000ba0| 74 20 70 6c 61 79 20 32 | 20 4b 78 66 36 20 73 69 |t play 2| Kxf6 si|
|00000bb0| 6e 63 65 20 74 68 69 73 | 20 77 69 6c 6c 20 6d 61 |nce this| will ma|
|00000bc0| 6b 65 20 42 6c 61 63 6b | 20 73 74 61 6c 65 6d 61 |ke Black| stalema|
|00000bd0| 74 65 2e 20 54 68 65 72 | 65 66 6f 72 65 20 57 68 |te. Ther|efore Wh|
|00000be0| 69 74 65 20 68 61 73 20 | 74 6f 20 6d 6f 76 65 20 |ite has |to move |
|00000bf0| 68 69 73 20 6b 69 6e 67 | 2e 80 03 01 40 04 00 25 |his king|....@..%|
|00000c00| 44 72 61 77 6e 2e 20 54 | 77 6f 20 6b 6e 69 67 68 |Drawn. T|wo knigh|
|00000c10| 74 73 20 63 61 6e 6e 6f | 74 20 66 6f 72 63 65 20 |ts canno|t force |
|00000c20| 6d 61 74 65 2e 00 0b a0 | 09 0b 4c 61 73 6b 65 72 |mate....|..Lasker|
|00000c30| 00 13 80 01 00 01 08 00 | 60 40 30 33 35 43 30 40 |........|`@035C0@|
|00000c40| 45 53 18 03 11 40 00 00 | 9f 54 68 69 73 20 69 73 |ES...@..|.This is|
|00000c50| 20 74 68 65 20 66 61 6d | 6f 75 73 20 4c 61 73 6b | the fam|ous Lask|
|00000c60| 65 72 20 70 6f 73 69 74 | 69 6f 6e 2e 20 57 68 69 |er posit|ion. Whi|
|00000c70| 74 65 20 74 6f 20 6d 6f | 76 65 20 77 69 6e 73 2e |te to mo|ve wins.|
|00000c80| 20 42 75 74 20 68 65 20 | 6d 75 73 74 20 62 65 20 | But he |must be |
|00000c90| 63 61 72 65 66 75 6c 2e | 20 41 20 6e 61 74 75 72 |careful.| A natur|
|00000ca0| 61 6c 20 6d 6f 76 65 20 | 73 75 63 68 20 61 73 20 |al move |such as |
|00000cb0| 31 20 4b 62 32 20 6d 65 | 72 65 6c 79 20 6c 65 61 |1 Kb2 me|rely lea|
|00000cc0| 64 73 20 74 6f 20 61 20 | 64 72 61 77 21 20 57 68 |ds to a |draw! Wh|
|00000cd0| 61 74 20 69 73 20 74 68 | 65 20 63 6f 72 72 65 63 |at is th|e correc|
|00000ce0| 74 20 6d 6f 76 65 3f 20 | c0 01 03 02 67 54 68 65 |t move? |....gThe|
|00000cf0| 20 72 65 61 73 6f 6e 20 | 66 6f 72 20 74 68 69 73 | reason |for this|
|00000d00| 20 69 74 20 66 61 72 20 | 66 72 6f 6d 20 6f 62 76 | it far |from obv|
|00000d10| 69 6f 75 73 2e 20 57 68 | 69 74 65 20 68 61 73 20 |ious. Wh|ite has |
|00000d20| 74 77 6f 20 77 61 79 73 | 20 6f 66 20 65 6e 74 65 |two ways| of ente|
|00000d30| 72 69 6e 67 20 74 68 65 | 20 42 6c 61 63 6b 20 63 |ring the| Black c|
|00000d40| 61 6d 70 3a 20 56 69 61 | 20 62 35 20 61 6e 64 20 |amp: Via| b5 and |
|00000d50| 67 35 2f 68 35 2e 20 48 | 6f 77 65 76 65 72 20 69 |g5/h5. H|owever i|
|00000d60| 66 20 57 68 69 74 65 20 | 73 69 6d 70 6c 79 20 73 |f White |simply s|
|00000d70| 74 65 65 72 73 20 74 6f | 77 61 72 64 73 20 62 35 |teers to|wards b5|
|00000d80| 2c 20 42 6c 61 63 6b 20 | 63 61 6e 20 65 61 73 69 |, Black |can easi|
|00000d90| 6c 79 20 64 65 66 65 6e | 64 20 62 79 20 6d 6f 76 |ly defen|d by mov|
|00000da0| 69 6e 67 20 74 6f 20 62 | 36 20 6f 72 20 61 36 2e |ing to b|6 or a6.|
|00000db0| 20 53 69 6d 69 6c 61 72 | 6c 79 2c 20 69 66 20 57 | Similar|ly, if W|
|00000dc0| 68 69 74 65 20 77 61 6e | 64 65 72 73 20 6f 76 65 |hite wan|ders ove|
|00000dd0| 72 20 74 6f 20 74 68 65 | 20 72 69 67 68 74 20 73 |r to the| right s|
|00000de0| 69 64 65 20 6f 66 20 74 | 68 65 20 62 6f 61 72 64 |ide of t|he board|
|00000df0| 2c 20 42 6c 61 63 6b 20 | 63 61 6e 20 61 67 61 69 |, Black |can agai|
|00000e00| 6e 20 64 65 66 65 6e 64 | 20 62 79 20 6d 6f 76 69 |n defend| by movi|
|00000e10| 6e 67 20 74 6f 20 67 36 | 20 6f 72 20 68 36 2e 0d |ng to g6| or h6..|
|00000e20| 09 54 68 65 20 69 64 65 | 61 20 69 73 20 66 6f 72 |.The ide|a is for|
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+--------+-------------------------+-------------------------+--------+--------+