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Problem Display

PID: 154756 (8/1p1K4/1k6/R3pP2/1Bpp3p/2r1r2R/3Q2P1/8 w - - 0 1)

Williams, Philip Hamilton

Daily Mail, 1907

8/1p1K4/1k6/R3pP2/1Bpp3p/2r1r2R/3Q2P1/8

#2

7 + 8

15351	SCPF/BCPS Black Books	2015

SOLUTION

SOUND
Sets
- 1...Rc1
  - 2.Bc5#
- 1...Rc2
  - 2.Bc5#
- 1...Ra3
  - 2.Bc5#
- 1...Rb3
  - 2.Bc5#
- 1...Rcd3
  - 2.Bc5#
- 1...Re1
  - 2.Qh6#
- 1...Re2
  - 2.Qh6#
- 1...Red3
  - 2.Qh6#
- 1...Rf3
  - 2.Qh6#
- 1...Rxh3
  - 2.Qh6#
- 1...Re4
  - 2.Qh6#
- 1...d3
  - 2.Qxe3#
- 1...e4
  - 2.Qxd4#
Tries
- 1.Rf3?
  - 1...Rxf3
    - 2.Qh6#
  - 1...Rc1
    - 2.Bc5#
  - 1...Rc2
    - 2.Bc5#
  - 1...Ra3
    - 2.Bc5#
  - 1...Rb3
    - 2.Bc5#
  - 1...Rcd3
    - 2.Bc5#
  - 1...Re1
    - 2.Qh6#
  - 1...Re2
    - 2.Qh6#
  - 1...Red3
    - 2.Qh6#
  - 1...Re4
    - 2.Qh6#
  - 1...d3
    - 2.Qxe3#
  - 1...e4
    - 2.Qxd4#
  - 1...h3!
- 1.Rxh4?
  - threat
    - 2.Rh6#
  - 1...Rh3
    - 2.Qh6#
  - 1...Rg3!
- 1.g3?
  - 1...hxg3
    - 2.Rh6#
  - 1...Rc1
    - 2.Bc5#
  - 1...Rc2
    - 2.Bc5#
  - 1...Ra3
    - 2.Bc5#
  - 1...Rb3
    - 2.Bc5#
  - 1...Rcd3
    - 2.Bc5#
  - 1...Re1
    - 2.Qh6#
  - 1...Re2
    - 2.Qh6#
  - 1...Red3
    - 2.Qh6#
  - 1...Rf3
    - 2.Qh6#
  - 1...Re4
    - 2.Qh6#
  - 1...d3
    - 2.Qxe3#
  - 1...e4
    - 2.Qxd4#
  - 1...Rxg3!
Keys
- 1.g4!
  - 1...Rxh3
    - 2.Qh6#
  - 1...hxg4 ep
    - 2.Rh6#
  - 1...Rc1
    - 2.Bc5#
  - 1...Rc2
    - 2.Bc5#
  - 1...Ra3
    - 2.Bc5#
  - 1...Rb3
    - 2.Bc5#
  - 1...Rcd3
    - 2.Bc5#
  - 1...Re1
    - 2.Qh6#
  - 1...Re2
    - 2.Qh6#
  - 1...Red3
    - 2.Qh6#
  - 1...Rf3
    - 2.Qh6#
  - 1...Rg3
    - 2.Qh6#
  - 1...Re4
    - 2.Qh6#
  - 1...d3
    - 2.Qxe3#
  - 1...e4
    - 2.Qxd4#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
Sets
- R(a);::B(D)
- R(b);OGATE::QAR(A)
- R(b);OGATE,XR(C)::QAR(A)
- P(d);OGATEB::QAB(A),XR(b)
- P(f);N_GUARD::QAB(A),XP(d)
Tries
- Try
  - R(C);
  - Vars
    - R(b);OGATE,XR(C)::QAR(A)
    - R(a);::B(D)
    - R(b);OGATE::QAR(A)
    - P(d);OGATEB::QAB(A),XR(b)
    - P(f);N_GUARD::QAB(A),XP(d)
  - Refutation
    - P(e);
- Try
  - R(C);XP(e)
  - Threat
    - R(C)
  - Vars
    - R(b);OGATE::QAR(A)
  - Refutation
    - R(b);
- Try
  - P(B);
  - Vars
    - P(e);OGATE,XP(B)::R(C)
    - R(a);::B(D)
    - R(b);OGATE::QAR(A)
    - P(d);OGATEB::QAB(A),XR(b)
    - P(f);N_GUARD::QAB(A),XP(d)
  - Refutation
    - R(b);XP(B)
Actual
- P(B);
- Vars
  - R(b);OGATE,XR(C)::QAR(A)
  - P(e);EP,OGATE,XP(B)::R(C)
  - R(a);::B(D)
  - R(b);OGATE::QAR(A)
  - P(d);OGATEB::QAB(A),XR(b)
  - P(f);N_GUARD::QAB(A),XP(d)

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).