Set 3 of 10x8 chess mating problems

This a my third set of five mating problems for the various 10x8 Chess variants out there with the Rook + Knight and Bishop + Knight pieces. Solutions (hidden via CSS) are at the bottom of the page.

The following positions are not composed problems, but are positions from actual games played with my own 10x8 Chess variant.

Setup

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    [0] => http://www.samiam.org/chessvariants/mates/mate-set03-02.png
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    [2] => http://www.samiam.org/chessvariants/mates/mate-set03-04.png
    [3] => http://www.samiam.org/chessvariants/mates/mate-set03-05.png
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Position 1:

Black to move and force mate

Position 2:

Black to move and force mate

Position 3:

White to move and force mate

Position 4:

Black to move and force mate

Position 5:

Black to move and force mate

Pieces

All of the FIDE Chess pieces, with a Rook + Knight and Bishop + Knight piece added. Just as the Queen is a Rook + Bishop piece, there is a Rook + Knight and Bishop + Knight piece in these positions. In the solutions, the "A" represents the Knight + Bishop piece, and the "M" represents the Rook + Knight piece.

Rules

Notes

Solutions

The solutions are hidden via CSS and can be seen by selecting all text with Cntl + A. If you are using an older browser without CSS support, or are reading a printout of this page, stop reading now unless you want to know the solutions. (Spoiler space provided)

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1) 1. ... Nd2#

2) 1. ... Qe8+ 2. Qe3 Qxe3 3. Be2 Qxe2#

3) 1. Qxg6+ Kh8 2. Rh1+ Mh2 3. Rxh2#

4) 1. ... Nxj3+ 2. KxI2 (if 2. Bxj3 Mxj3+ 3. KI2 Ah4#) Ah4+ and now:

a) 3. Kh3 Mj4+ 4. Kg4 NI5#
b) 3. Kj1 Nxh2+ 4. KI1 Mj1#

5) 1. ... Rjh8 2. Mg3 (the only move that stops 2. Rh1#) Mxg3 and now:

a) 3. Kf2 Mxe4+ 4. Kf3 (4. Kg1 Mg4 5. Kf1 Rhf8 followed by Mg2#) Mc3 5. Kg2 Rd2 6. Kg1 Mf3#
b) 3. Qb2 Mxe4+ 4. Kf1 (forced) Rdf8+ 5. Qf6+ (to delay Me2) Rxf6 6. Kg1 Me2#
c) 3. Qb3 Mg2+ 4. Kf1 (forced) Md2+ 5. Kg1 (5. Kf1 Rh1#) MI2 6. Kf1 Rh1#

This 'user submitted' page is a collaboration between the posting user and the Chess Variant Pages. Registered contributors to the Chess Variant Pages have the ability to post their own works, subject to review and editing by the Chess Variant Pages Editorial Staff.

By Sam Trenholme.
Web page created: 2007-07-29. Web page last updated: 2007-07-29