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Problem Display

PID: 108965 (1Q1RK3/1p6/4pp2/4Np2/4kpn1/8/4Pq2/b1BR3n w - - 0 1)

Mlynka, Karol

Ceskoslovensky Sport, 1963

1Q1RK3/1p6/4pp2/4Np2/4kpn1/8/4Pq2/b1BR3n

#2

7 + 10

6490	yacpdb	2009

SOLUTION

SOUND
Sets
- 1...Qf3
  - 2.exf3#
- 1...Bxe5
  - 2.Qxb7#
- 1...fxe5
  - 2.Qxb7#
Tries
- 1.Sd3?
  - threat
    - 2.Qxb7#
  - 1...Qd4
    - 2.Qxf4#
  - 1...Qc5
    - 2.Sxc5#
    - 2.Qxf4#
  - 1...Qb6
    - 2.Qxf4#
  - 1...Qa7
    - 2.Qxf4#
  - 1...Se3
    - 2.Sc5#
  - 1...b5
    - 2.Qb7#
    - 2.Qa8#
  - 1...b6
    - 2.Qb7#
    - 2.Qa8#
  - 1...Se5!
- 1.Sxg4?
  - threat
    - 2.Qxb7#
  - 1...Qd4
    - 2.Qxf4#
  - 1...Qc5
    - 2.Qxf4#
  - 1...Qb6
    - 2.Qxf4#
  - 1...Qa7
    - 2.Qxf4#
  - 1...b5
    - 2.Qb7#
    - 2.Qa8#
  - 1...b6
    - 2.Qb7#
    - 2.Qa8#
  - 1...fxg4!
- 1.Sd7?
  - threat
    - 2.Qxb7#
  - 1...Se5
    - 2.Sxf6#
  - 1...Qc5
    - 2.Sxc5#
    - 2.Qxf4#
  - 1...Qb6
    - 2.Qxf4#
  - 1...Qa7
    - 2.Qxf4#
  - 1...Se3
    - 2.Sc5#
  - 1...b5
    - 2.Qb7#
    - 2.Qa8#
  - 1...b6
    - 2.Qb7#
    - 2.Qa8#
  - 1...Qd4!
- 1.Sf7?
  - threat
    - 2.Qxb7#
  - 1...Se5
    - 2.Sd6#
  - 1...Qd4
    - 2.Qxf4#
  - 1...Qc5
    - 2.Qxf4#
  - 1...Qb6
    - 2.Qxf4#
  - 1...Qa7
    - 2.Qxf4#
  - 1...b5
    - 2.Qb7#
    - 2.Qa8#
  - 1...b6
    - 2.Qb7#
    - 2.Qa8#
  - 1...Se3!
Keys
- 1.Sc4!
  - threat
    - 2.Qxb7#
  - 1...Se5
    - 2.Sd6#
  - 1...Qd4
    - 2.Qxf4#
  - 1...Qc5
    - 2.Qxf4#
  - 1...Qb6
    - 2.Qxf4#
  - 1...Qa7
    - 2.Qxf4#
  - 1...Se3
    - 2.Sd2#
  - 1...b5
    - 2.Qb7#
    - 2.Qa8#
  - 1...b6
    - 2.Qb7#
    - 2.Qa8#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
Sets
- Q(c);OGATE::P(C),XQ(c)
- B(a);SBLOCK,XS(D)::QAB(E),XP(j)
- P(i);SBLOCK,XS(D)::QAB(E),XP(j)
Tries
- Try
  - S(D);
  - Threat
    - QAB(E),XP(j)
  - Vars
    - Q(c);N_GUARD::QAR1(E),XP(e)
    - S(f);S_CUTQ(c)::S(D)
  - Refutation
    - S(f);
- Try
  - S(D);XS(f)
  - Threat
    - QAB(E),XP(j)
  - Vars
    - Q(c);N_GUARD::QAR1(E),XP(e)
  - Refutation
    - P(g);XS(D)
- Try
  - S(D);
  - Threat
    - QAB(E),XP(j)
  - Vars
    - S(f);N_GUARD,S_CUTB(a)::S(D),XP(i)
    - Q(c);N_GUARD::QAR1(E),XP(e)
    - S(f);S_CUTQ(c)::S(D)
  - Refutation
    - Q(c);
- Try
  - S(D);
  - Threat
    - QAB(E),XP(j)
  - Vars
    - S(f);SBLOCK::S(D)
    - Q(c);N_GUARD::QAR1(E),XP(e)
  - Refutation
    - S(f);
Actual
- S(D);
- Threat
  - QAB(E),XP(j)
- Vars
  - S(f);SBLOCK::S(D)
  - Q(c);N_GUARD::QAR1(E),XP(e)

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).