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Problem Display

PID: 10998 (8/5P2/p7/p7/kb6/4Q3/B7/3K4 w - - 0 1)

Kainer, Cenek

Narodni osvobozeni, 1931

8/5P2/p7/p7/kb6/4Q3/B7/3K4

#2

4 + 4

SOLUTION

SOUND
Sets
- 1...Be1
  - 2.Qb3#
- 1...Bd2
  - 2.Qb3#
- 1...Ba3
  - 2.Qb3#
- 1...Bc5
  - 2.Qb3#
- 1...Bd6
  - 2.Qb3#
- 1...Be7
  - 2.Qb3#
- 1...Bf8
  - 2.Qb3#
Tries
- 1.Qb6?
  - 1...Be1
    - 2.Qb3#
  - 1...Bd2
    - 2.Qb3#
  - 1...Ba3
    - 2.Bb3#
    - 2.Qb3#
  - 1...Bc3
    - 2.Qb3#
  - 1...Bc5
    - 2.Qb3#
  - 1...Bd6
    - 2.Qb3#
  - 1...Be7
    - 2.Qb3#
  - 1...Bf8
    - 2.Qb3#
  - 1...Ka3!
- 1.Qd3?
  - 1...Be1
    - 2.Qb3#
  - 1...Bd2
    - 2.Qb3#
  - 1...Ba3
    - 2.Qb3#
  - 1...Bc5
    - 2.Qb3#
  - 1...Bd6
    - 2.Qb3#
  - 1...Be7
    - 2.Qb3#
  - 1...Bf8
    - 2.Qb3#
  - 1...Bc3!
- 1.Qe6?
  - 1...Ka3
    - 2.Qb3#
  - 1...Be1
    - 2.Qb3#
  - 1...Bd2
    - 2.Qb3#
  - 1...Bc3
    - 2.Qb3#
  - 1...Bc5
    - 2.Qb3#
  - 1...Bd6
    - 2.Qb3#
  - 1...Be7
    - 2.Qb3#
  - 1...Bf8
    - 2.Qb3#
  - 1...Ba3
    - 2.Qb3#
  - 1...Kb5!
- 1.f8B?
  - 1...Bxf8
    - 2.Qb3#
  - 1...Bc5
    - 2.Qb3#
  - 1...Bd6
    - 2.Qb3#
  - 1...Be7
    - 2.Qb3#
  - 1...Be1
    - 2.Qb3#
    - 2.Qe8#
  - 1...Bd2
    - 2.Qb3#
    - 2.Qe8#
  - 1...Ba3
    - 2.Qb3#
    - 2.Qe8#
  - 1...Bc3
    - 2.Qe8#
  - 1...Kb5!
Keys
- 1.f8Q!
  - threat
    - 2.Qfe8#
  - 1...Kb5
    - 2.Qfe8#
  - 1...Bxf8
    - 2.Qb3#
  - 1...Bc5
    - 2.Qb3#
  - 1...Bd6
    - 2.Qb3#
  - 1...Be7
    - 2.Qb3#
  - 1...Be1
    - 2.Qb3#
    - 2.Qee8#
  - 1...Bd2
    - 2.Qb3#
    - 2.Qee8#
  - 1...Ba3
    - 2.Qb3#
    - 2.Qee8#
  - 1...Bc3
    - 2.Qee8#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
Sets
- B(b);::QAB1(C)
Tries
- Try
  - Q(C);
  - Vars
    - B(b);OGATE::QAB1(C)
  - Refutation
    - K(a);P-FLIGHT
- Try
  - Q(C);
  - Vars
    - B(b);::QAB1(C)
  - Refutation
    - B(b);
- Try
  - Q(C);
  - Vars
    - K(a);P-FLIGHT::QAR1(C)
    - B(b);::QAB1(C)
  - Refutation
    - K(a);S_FLIGHT
- Try
  - P(D);
  - Vars
    - B(b);XB(D)::QAB1(C)
    - B(b);::QAB1(C)
    - B(b);::QAB(C)
  - Refutation
    - K(a);S_FLIGHT
Actual
- P(D);
- Threat
  - QAB(D)
- Vars
  - K(a);S_FLIGHT::QAB(D)
  - B(b);XQ(D)::QAB1(C)
  - B(b);::QAB1(C)
  - B(b);::QAB(C)

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).