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Problem Display

PID: 198895 (8/1p1Q4/1K4p1/2Npp1P1/2pk1n2/1p2N3/3P4/8 w - - 0 1)

Eder, Istvan

Bekes, 1921

8/1p1Q4/1K4p1/2Npp1P1/2pk1n2/1p2N3/3P4/8

#2

6 + 8

6490	yacpdb	2019

SOLUTION

SOUND
Sets
- 1...Se2
  - 2.Qxd5#
- 1...Sg2
  - 2.Qxd5#
- 1...Sd3
  - 2.Qxd5#
- 1...Sh3
  - 2.Qxd5#
- 1...Sh5
  - 2.Qxd5#
- 1...Se6
  - 2.Qxd5#
- 1...b2
  - 2.Sc2#
- 1...c3
  - 2.Qa4#
- 1...e4
  - 2.Qg7#
Tries
- 1.Qc6?
  - 1...e4
    - 2.Qf6#
  - 1...Se2
    - 2.Qxd5#
  - 1...Sg2
    - 2.Qxd5#
  - 1...Sd3
    - 2.Qxd5#
  - 1...Sh3
    - 2.Qxd5#
  - 1...Sh5
    - 2.Qxd5#
  - 1...Se6
    - 2.Qxd5#
  - 1...b2
    - 2.Sc2#
  - 1...c3
    - 2.Qa4#
  - 1...bxc6!
- 1.Qd6?
  - 1...Se2
    - 2.Qxd5#
  - 1...Sg2
    - 2.Qxd5#
  - 1...Sd3
    - 2.Qxd5#
  - 1...Sh3
    - 2.Qxd5#
  - 1...Sh5
    - 2.Qxd5#
  - 1...Se6
    - 2.Qxd5#
  - 1...b2
    - 2.Sc2#
  - 1...e4
    - 2.Qf6#
  - 1...c3!
- 1.Qxb7?
  - 1...e4
    - 2.Qg7#
  - 1...Se2
    - 2.Qxd5#
  - 1...Sg2
    - 2.Qxd5#
  - 1...Sd3
    - 2.Qxd5#
  - 1...Sh3
    - 2.Qxd5#
  - 1...Sh5
    - 2.Qxd5#
  - 1...Se6
    - 2.Qxd5#
  - 1...b2
    - 2.Sc2#
  - 1...c3!
- 1.Qd8?
  - 1...e4
    - 2.Qf6#
    - 2.Qh8#
  - 1...Se2
    - 2.Qxd5#
  - 1...Sg2
    - 2.Qxd5#
  - 1...Sd3
    - 2.Qxd5#
  - 1...Sh3
    - 2.Qxd5#
  - 1...Sh5
    - 2.Qxd5#
  - 1...Se6
    - 2.Qxd5#
  - 1...b2
    - 2.Sc2#
  - 1...c3!
Keys
- 1.Qf5!
  - 1...gxf5
    - 2.Sxf5#
  - 1...Se2
    - 2.Se6#
  - 1...Sg2
    - 2.Se6#
  - 1...Sd3
    - 2.Se6#
  - 1...Sh3
    - 2.Se6#
  - 1...Sh5
    - 2.Se6#
  - 1...Se6
    - 2.Sxe6#
  - 1...b2
    - 2.Sc2#
  - 1...c3
    - 2.Sxb3#
  - 1...e4
    - 2.Qf6#

FEATURES

Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- S(d);N_GUARD::QAR1(F),XP(e)
- P(a);N_GUARD::S(B)
- P(b);OGATEB::QAR(F)
- P(f);OGATEB::QAB(F)
Tries
- Try
  - Q(F);N_PINP(e)
  - Vars
    - P(f);OGATEB::QAB(F)
    - S(d);N_GUARD::QAR1(F),XP(e)
    - P(a);N_GUARD::S(B)
    - P(b);OGATEB::QAR(F)
  - Refutation
    - P(h);XQ(F)
- Try
  - Q(F);
  - Vars
    - S(d);N_GUARD::QAR1(F),XP(e)
    - P(a);N_GUARD::S(B)
    - P(f);OGATEB::QAB(F)
  - Refutation
    - P(b);
- Try
  - Q(F);N_PINP(e),XP(h)
  - Vars
    - P(f);OGATEB::QAB(F)
    - S(d);N_GUARD::QAR1(F),XP(e)
    - P(a);N_GUARD::S(B)
  - Refutation
    - P(b);
- Try
  - Q(F);
  - Vars
    - S(d);N_GUARD::QAR1(F),XP(e)
    - P(a);N_GUARD::S(B)
  - Refutation
    - P(b);
Actual
- Q(F);N_PINP(e)
- Vars
  - P(g);XQ(F)::S(B),XP(g)
  - S(d);N_GUARD::S(C)
  - S(d);N_GUARD::S(C),XS(d)
  - P(a);N_GUARD::S(B)
  - P(b);N_GUARD::S(C),XP(a)
  - P(f);OGATEB::QAB(F)

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).