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Problem Display

PID: 147161 (8/4NKN1/3r1p1r/5P2/3P1k1P/4R1R1/8/8 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1937

8/4NKN1/3r1p1r/5P2/3P1k1P/4R1R1/8/8

#2

8 + 4

15256	TRD Scrapbook	2013

SOLUTION

SOUND
Sets
- 1...Rxd4
  - 2.Se6#
- 1...Rd5
  - 2.Sxd5#
  - 2.Se6#
- 1...Ra6
  - 2.Sd5#
- 1...Rb6
  - 2.Sd5#
- 1...Rc6
  - 2.Sd5#
- 1...Re6
  - 2.Sd5#
  - 2.Sxe6#
- 1...Rd7
  - 2.Se6#
- 1...Rd8
  - 2.Se6#
- 1...Rxh4
  - 2.Sg6#
- 1...Rh5
  - 2.Sg6#
  - 2.Sxh5#
- 1...Rg6
  - 2.Sxg6#
  - 2.Sh5#
- 1...Rh7
  - 2.Sg6#
- 1...Rh8
  - 2.Sg6#
Keys
- 1.h5!
  - 1...Rxd4
    - 2.Se6#
  - 1...Rxh5
    - 2.Sg6#
    - 2.Sxh5#
  - 1...Rd5
    - 2.Sxd5#
    - 2.Se6#
  - 1...Ra6
    - 2.Sd5#
  - 1...Rb6
    - 2.Sd5#
  - 1...Rc6
    - 2.Sd5#
  - 1...Re6
    - 2.Sd5#
    - 2.Sxe6#
  - 1...Rd7
    - 2.Se6#
  - 1...Rd8
    - 2.Se6#
  - 1...Rg6
    - 2.Sxg6#
  - 1...Rh7
    - 2.Sg6#
  - 1...Rh8
    - 2.Sg6#

FEATURES

Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
Sets
- R(b);N_GUARD,XP(C)::S(H)
- R(b);N_GUARD::S(F)
- R(b);N_GUARD,P_PINS(F)::S(H)
- R(b);N_GUARD::S(H)
- R(d);N_GUARD,XP(D)::S(F)
- R(d);N_GUARD,P_PINS(H)::S(F)
- R(d);N_GUARD::S(F)
Actual
- P(D);
- Vars
  - R(b);N_GUARD,XP(C)::S(H)
  - R(b);N_GUARD::S(F)
  - R(b);N_GUARD,P_PINS(F)::S(H)
  - R(b);N_GUARD::S(H)
  - R(d);N_GUARD::S(F),XR(d)
  - R(d);N_GUARD,P_PINS(H)::S(F)
  - R(d);N_GUARD::S(F)

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).