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Problem Display

PID: 156947 (3n4/N7/2p1p3/PQ6/3kB3/3P4/3K2P1/8 w - - 0 1)

Abdullayev, Elmar

Troll, 2015

3n4/N7/2p1p3/PQ6/3kB3/3P4/3K2P1/8

#2

7 + 4

SOLUTION

SOUND
Sets
- 1...Sb7
  - 2.Sxc6#
- 1...Sf7
  - 2.Sxc6#
- 1...c5
  - 2.Qb2#
- 1...e5
  - 2.Qc4#
  - 2.Qb4#
Tries
- 1.Bf3?
  - 1...c5
    - 2.Qb2#
  - 1...Sb7
    - 2.Sxc6#
  - 1...Sf7
    - 2.Sxc6#
  - 1...e5
    - 2.Qc4#
    - 2.Qb4#
  - 1...cxb5!
- 1.Qf5?
  - 1...e5
    - 2.Qf2#
  - 1...Sb7
    - 2.Sxc6#
  - 1...Sf7
    - 2.Sxc6#
  - 1...c5
    - 2.Sb5#
  - 1...exf5!
- 1.Qh5?
  - 1...Sb7
    - 2.Sxc6#
  - 1...Sf7
    - 2.Sxc6#
  - 1...c5
    - 2.Sb5#
  - 1...e5!
- 1.Qb6+?
  - 1...c5
    - 2.Qb2#
    - 2.Qd6#
  - 1...Ke5!
- 1.g3?
  - 1...c5
    - 2.Qb2#
  - 1...Sb7
    - 2.Sxc6#
  - 1...Sf7
    - 2.Sxc6#
  - 1...e5
    - 2.Qc4#
    - 2.Qb4#
  - 1...cxb5!
- 1.g4?
  - 1...c5
    - 2.Qb2#
  - 1...Sb7
    - 2.Sxc6#
  - 1...Sf7
    - 2.Sxc6#
  - 1...e5
    - 2.Qc4#
    - 2.Qb4#
  - 1...cxb5!
- 1.a6?
  - 1...c5
    - 2.Qb2#
  - 1...Sb7
    - 2.Sxc6#
  - 1...Sf7
    - 2.Sxc6#
  - 1...e5
    - 2.Qc4#
    - 2.Qb4#
  - 1...cxb5!
Keys
- 1.Qg5!
  - 1...e5
    - 2.Qe3#
  - 1...Sb7
    - 2.Sxc6#
  - 1...Sf7
    - 2.Sxc6#
  - 1...c5
    - 2.Sb5#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- S(d);N_GUARD::S(G),XP(b)
- P(b);SBLOCK::QAB(F)
Tries
- Try
  - B(D);
  - Vars
    - P(b);SBLOCK::QAB(F)
    - S(d);N_GUARD::S(G),XP(b)
  - Refutation
    - P(b);XQ(F)
- Try
  - Q(F);
  - Vars
    - P(c);SBLOCK::QAB(F)
    - S(d);N_GUARD::S(G),XP(b)
    - P(b);N_GUARD::S(G)
  - Refutation
    - P(c);XQ(F)
- Try
  - Q(F);
  - Vars
    - S(d);N_GUARD::S(G),XP(b)
    - P(b);N_GUARD::S(G)
  - Refutation
    - P(c);
- Try
  - Q(F);CHECK
  - Refutation
    - K(a);S_FLIGHT
- Try
  - P(B);
  - Vars
    - P(b);SBLOCK::QAB(F)
    - S(d);N_GUARD::S(G),XP(b)
  - Refutation
    - P(b);XQ(F)
- Try
  - P(B);
  - Vars
    - P(b);SBLOCK::QAB(F)
    - S(d);N_GUARD::S(G),XP(b)
  - Refutation
    - P(b);XQ(F)
- Try
  - P(E);
  - Vars
    - P(b);SBLOCK::QAB(F)
    - S(d);N_GUARD::S(G),XP(b)
  - Refutation
    - P(b);XQ(F)
Actual
- Q(F);
- Vars
  - P(c);SBLOCK::QAB1(F)
  - S(d);N_GUARD::S(G),XP(b)
  - P(b);N_GUARD::S(G)

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).