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Problem Display

PID: 50038 (8/8/8/8/8/3pN3/p2Q2pr/R3K1Nk w Q - 0 1)

Gruber, Bratoljub

Problem (Zagreb), 1955

8/8/8/8/8/3pN3/p2Q2pr/R3K1Nk

#2

5 + 5

273	Mat Plus	1995

SOLUTION

SOUND
Sets
- 1...Kxg1
  - 2.0-0-0#
- 1...Rh3
  - 2.Qxg2#
- 1...Rh4
  - 2.Qxg2#
- 1...Rh5
  - 2.Qxg2#
- 1...Rh6
  - 2.Qxg2#
- 1...Rh7
  - 2.Qxg2#
- 1...Rh8
  - 2.Qxg2#
Tries
- 1.Rxa2?
  - 1...Rh3
    - 2.Qxg2#
  - 1...Rh4
    - 2.Qxg2#
  - 1...Rh5
    - 2.Qxg2#
  - 1...Rh6
    - 2.Qxg2#
  - 1...Rh7
    - 2.Qxg2#
  - 1...Rh8
    - 2.Qxg2#
  - 1...Kxg1!
- 1.Qxa2?
  - 1...Kxg1
    - 2.0-0-0#
  - 1...Rh3
    - 2.Qxg2#
  - 1...Rh4
    - 2.Qxg2#
  - 1...Rh5
    - 2.Qxg2#
  - 1...Rh6
    - 2.Qxg2#
  - 1...Rh7
    - 2.Qxg2#
  - 1...Rh8
    - 2.Qxg2#
  - 1...d2+!
- 1.Qb2?
  - 1...Kxg1
    - 2.0-0-0#
  - 1...Rh3
    - 2.Qxg2#
  - 1...Rh4
    - 2.Qxg2#
  - 1...Rh5
    - 2.Qxg2#
  - 1...Rh6
    - 2.Qxg2#
  - 1...Rh7
    - 2.Qxg2#
  - 1...Rh8
    - 2.Qxg2#
  - 1...d2+!
- 1.Qf2?
  - 1...Rh3
    - 2.Qxg2#
  - 1...Rh4
    - 2.Qxg2#
  - 1...Rh5
    - 2.Qxg2#
  - 1...Rh6
    - 2.Qxg2#
  - 1...Rh7
    - 2.Qxg2#
  - 1...Rh8
    - 2.Qxg2#
  - 1...d2+!
Keys
- 1.Kd1!
  - 1...Kxg1
    - 2.Qe1#
  - 1...Rh3
    - 2.Qxg2#
  - 1...Rh4
    - 2.Qxg2#
  - 1...Rh5
    - 2.Qxg2#
  - 1...Rh6
    - 2.Qxg2#
  - 1...Rh7
    - 2.Qxg2#
  - 1...Rh8
    - 2.Qxg2#

There are these versions: 50071

FEATURES

Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
Sets
- K(a);P-FLIGHT,XS(C)::0-0-0
- R(d);N_GUARD::QAB1(D),XP(c)
Tries
- Try
  - R(A);XP(b)
  - Vars
    - R(d);N_GUARD::QAB1(D),XP(c)
  - Refutation
    - K(a);P-FLIGHT,XS(C)
- Try
  - Q(D);XP(b)
  - Vars
    - K(a);P-FLIGHT,XS(C)::0-0-0
    - R(d);N_GUARD::QAB1(D),XP(c)
  - Refutation
    - P(e);CHECK
- Try
  - Q(D);
  - Vars
    - K(a);P-FLIGHT,XS(C)::0-0-0
    - R(d);N_GUARD::QAB1(D),XP(c)
  - Refutation
    - P(e);CHECK
- Try
  - Q(D);
  - Vars
    - R(d);N_GUARD::QAB1(D),XP(c)
  - Refutation
    - P(e);CHECK
Actual
- K(B);P-FLIGHT
- Vars
  - K(a);OGATEB,P-FLIGHT,XS(C)::QAR2(D)
  - R(d);N_GUARD::QAB1(D),XP(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).