Sneak Preview
Sneak Preview is one of the new possible maps for Sokoban Level 2 in Hack'EM. It has 12 boulders and 10 holes, but only 11 are accessible in a given pass, leaving 1 spare boulder.
The puzzle layout is nearly identical to Reading Rooms rotated 90°.
---- 0 boulder -----------..| ^ hole |..0.^^^^^^..| > starting position/downstairs |.--.-------^| < upstairs --......|...|^| + door |.......+.0.|^| # sink |.......|...|^| ≠ iron bars |-+--.--|≠≠≠-+| |...|...|.....| |.0.|.|.|#.<..| |...|0|.|.....| ----|.0.-----≠| |..0...--.| |.--0...|.| |....0-.|.| |.-.-.0.|.| |...0..0--| -----...0.| --.>..| ------
Strategy
Open a path so you can clear the first two boulders:
---- A ll -----------..| I uuuu uuu |..K.^^^^^^..| K rr* |.--.-------^| I urr* --......|...|^| |.......+.L.|^| |.......|...|^| |-+--.--|≠≠≠-+| |...|...|.....| |.J.|.|.|#.<..| |...|I|.|.....| ----|.H.-----≠| |..G...--.| |.--F...|.| |....E-.|.| |.-.-.D.|.| |...A..C--| -----...B.| --.>..| ------
The next boulder can be taken from either 3x3 chamber, with the doors functioning like the prize doors on the top floor do in Hack'EM and some other variants: once you open one door, the other will seal. If you want to look for any items within either chamber before then, a means of object detection (such as the potion of object detection or the detect treasure spell) is recommended. The right chamber has a set of iron bars that cannot be destroyed, but can be crossed by phasing, or by polyself into a form that has phasing or else can slip between the bars.
Left chamber
This set of moves assumes that you opened the chamber containing boulder J:
---- J uuuu rrru uurr r* -----------..| H luuu uuuu uurr rr* |........^^..| G rr |.--.-------^| F d --......|...|^| C d |.......+.L.|^| G llll uuuu uuuu uurr rrr |.......|...|^| E uull lluu uuuu uuuu rrrr rr |-+--.--|≠≠≠-+| F ruul lllu uuuu uuuu urrr rrrr rd |...|...|.....| |.J.|.|.|#.<..| |...|.|.|.....| ----|.H.-----≠| |..G...--.| |.--F...|.| |....E-.|.| |.-.-.D.|.| |.A....C--| -----...B.| --.>..| ------
---- D luuu llll uuuu uuuu uurr rrrr rrdd -----------..| C u |............| B llul uuul lllu uuuu uuuu urrr rrrr rddd |.--.-------.| A rrru uuul lllu uuuu uuuu urrr rrrr rddd d --......|...|^| |.......|.L.|^| |.......|...|^| |-+--.--|≠≠≠-+| |...|...|.....| |...|.|.|#.<..| |...|.|.|.....| ----|...-----≠| |......--.| |.--....|.| |.....-.|.| |.-.-.D.|.| |.A.....--| -----..CB.| --.>..| ------
Right chamber
This set of moves assumes that you opened the chamber containing boulder L:
---- L llll luuu rrrr r* -----------..| H luuu uuuu uurr rr* |........^^..| G rr |.--.-------^| F d --......|...|^| C d |.......+.L.|^| G llll uuuu uuuu uurr rrr |.......|...|^| E uull lluu uuuu uuuu rrrr rr |-+--.--|≠≠≠-+| F ruul lllu uuuu uuuu urrr rrrr rd |...|...|.....| |.J.|.|.|#.<..| |...|.|.|.....| ----|.H.-----≠| |..G...--.| |.--F...|.| |....E-.|.| |.-.-.D.|.| |.A....C--| -----...B.| --.>..| ------
---- D luuu llll uuuu uuuu uurr rrrr rrdd -----------..| C u |............| B llul uuul lllu uuuu uuuu urrr rrrr rddd |.--.-------.| A rrru uuul lllu uuuu uuuu urrr rrrr rddd d --......|...|^| |.......+...|^| |.......|...|^| |----.--|≠≠≠-+| |...|...|.....| |.J.|.|.|#.<..| |...|.|.|.....| ----|...-----≠| |......--.| |.--....|.| |.....-.|.| |.-.-.D.|.| |.A.....--| -----..CB.| --.>..| ------
Next level
The map for Sokoban's top floor is selected from one of the following: