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Problem Display

PID: 108150 (4B2K/4b3/5p1k/6p1/3B4/1p1p3P/1Q1P4/8 w - - 0 1)

Godbout, Alain J

Apprenti Sorcier, 1992

4B2K/4b3/5p1k/6p1/3B4/1p1p3P/1Q1P4/8

#2

6 + 6

6490	yacpdb	2009

SOLUTION

SOUND
Sets
- 1...g4
  - 2.Be3#
- 1...f5
  - 2.Bg7#
Tries
- 1.Bg1?
  - 1...g4
    - 2.Be3#
  - 1...Ba3
    - 2.Qxf6#
  - 1...Bb4
    - 2.Qxf6#
  - 1...Bc5
    - 2.Qxf6#
  - 1...Bd6
    - 2.Qxf6#
  - 1...Bf8
    - 2.Qxf6#
  - 1...f5
    - 2.Qg7#
  - 1...Bd8!
- 1.Bf2?
  - 1...g4
    - 2.Be3#
  - 1...Ba3
    - 2.Qxf6#
  - 1...Bb4
    - 2.Qxf6#
  - 1...Bc5
    - 2.Qxf6#
  - 1...Bd6
    - 2.Qxf6#
  - 1...Bf8
    - 2.Qxf6#
  - 1...f5
    - 2.Qg7#
  - 1...Bd8!
- 1.Be3?
  - 1...Ba3
    - 2.Qxf6#
  - 1...Bb4
    - 2.Qxf6#
  - 1...Bc5
    - 2.Qxf6#
  - 1...Bd6
    - 2.Qxf6#
  - 1...Bf8
    - 2.Qxf6#
  - 1...f5
    - 2.Qg7#
  - 1...Bd8!
- 1.Bb6?
  - 1...g4
    - 2.Be3#
  - 1...Ba3
    - 2.Qxf6#
  - 1...Bb4
    - 2.Qxf6#
  - 1...Bc5
    - 2.Qxf6#
  - 1...Bd6
    - 2.Qxf6#
  - 1...Bf8
    - 2.Qxf6#
  - 1...f5
    - 2.Qg7#
  - 1...Bd8!
- 1.Ba7?
  - 1...g4
    - 2.Be3#
  - 1...Ba3
    - 2.Qxf6#
  - 1...Bb4
    - 2.Qxf6#
  - 1...Bc5
    - 2.Qxf6#
  - 1...Bd6
    - 2.Qxf6#
  - 1...Bf8
    - 2.Qxf6#
  - 1...f5
    - 2.Qg7#
  - 1...Bd8!
Keys
- 1.Bc5!
  - 1...Bxc5
    - 2.Qxf6#
  - 1...g4
    - 2.Be3#
  - 1...Bd8
    - 2.Bf8#
  - 1...Bd6
    - 2.Qxf6#
  - 1...Bf8
    - 2.Bxf8#
    - 2.Qxf6#
  - 1...f5
    - 2.Qg7#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
Sets
- P(c);OGATEB::B(D)
- P(d);OGATE::B(D)
Tries
- Try
  - B(D);
  - Vars
    - P(c);OGATEB::B(D)
    - B(f);N_GUARD::QAR2(A),XP(d)
    - P(d);OGATE::QAB1(A)
  - Refutation
    - B(f);
- Try
  - B(D);
  - Vars
    - P(c);OGATEB::B(D)
    - B(f);N_GUARD::QAR2(A),XP(d)
    - P(d);OGATE::QAB1(A)
  - Refutation
    - B(f);
- Try
  - B(D);P_PINP(c)
  - Vars
    - B(f);N_GUARD::QAR2(A),XP(d)
    - P(d);OGATE::QAB1(A)
  - Refutation
    - B(f);
- Try
  - B(D);
  - Vars
    - P(c);OGATEB::B(D)
    - B(f);N_GUARD::QAR2(A),XP(d)
    - P(d);OGATE::QAB1(A)
  - Refutation
    - B(f);
- Try
  - B(D);
  - Vars
    - P(c);OGATEB::B(D)
    - B(f);N_GUARD::QAR2(A),XP(d)
    - P(d);OGATE::QAB1(A)
  - Refutation
    - B(f);
Actual
- B(D);
- Vars
  - B(f);N_GUARD,XB(D)::QAR2(A),XP(d)
  - P(c);OGATEB::B(D)
  - B(f);OGATE::B(D)
  - B(f);N_GUARD::QAR2(A),XP(d)
  - P(d);OGATE::QAB1(A)

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).