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Problem Display

PID: 157189 (2Bn4/6B1/3P4/n3Np2/4k3/b2R2P1/4K3/8 w - - 0 1)

Armeni, Alberto

The Problemist, 2015

2Bn4/6B1/3P4/n3Np2/4k3/b2R2P1/4K3/8

#2

7 + 5

SOLUTION

SOUND
Tries
- 1.Sc4?
  - threat
    - 2.Sd2#
    - 2.Rd4#
  - 1...Sxc4
    - 2.Rd4#
  - 1...Bc1
    - 2.Rd4#
  - 1...Bb2
    - 2.Sd2#
  - 1...Bb4
    - 2.Rd4#
  - 1...Bc5
    - 2.Sd2#
  - 1...Sac6
    - 2.Sd2#
  - 1...Sdc6
    - 2.Sd2#
  - 1...Se6
    - 2.Sd2#
  - 1...Sb3!
- 1.Sg4?
  - threat
    - 2.Sf2#
    - 2.Rd4#
  - 1...fxg4
    - 2.Rd4#
  - 1...Bb2
    - 2.Sf2#
  - 1...Sb3
    - 2.Sf2#
  - 1...Sac6
    - 2.Sf2#
  - 1...Sdc6
    - 2.Sf2#
  - 1...Se6
    - 2.Sf2#
  - 1...Bc5!
- 1.Sf7?
  - threat
    - 2.Sg5#
    - 2.Rd4#
  - 1...Sxf7
    - 2.Rd4#
  - 1...Bc1
    - 2.Rd4#
  - 1...Bb2
    - 2.Sg5#
  - 1...Bc5
    - 2.Sg5#
  - 1...Sb3
    - 2.Sg5#
  - 1...Sac6
    - 2.Sg5#
  - 1...Sdc6
    - 2.Sg5#
  - 1...Se6!
Keys
- 1.Sf3!
  - threat
    - 2.Sd2#
    - 2.Sg5#
    - 2.Rd4#
  - 1...Bc1
    - 2.Rd4#
  - 1...Bb2
    - 2.Sd2#
    - 2.Sg5#
  - 1...Bb4
    - 2.Sg5#
    - 2.Rd4#
  - 1...Bc5
    - 2.Sd2#
    - 2.Sg5#
  - 1...Sb3
    - 2.Sg5#
  - 1...Sc4
    - 2.Sg5#
    - 2.Rd4#
  - 1...Sac6
    - 2.Sd2#
    - 2.Sg5#
  - 1...Sdc6
    - 2.Sd2#
    - 2.Sg5#
  - 1...Se6
    - 2.Sd2#
  - 1...Sf7
    - 2.Sd2#
    - 2.Rd4#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
Sets
Tries
- Try
  - S(D);
  - Threat
    - DUALS(2)
  - Vars
    - S(c);XS(D)::R1(B)
    - B(a);::R1(B)
    - B(a);::S(D)
    - S(c);::S(D)
    - S(e);::S(D)
  - Refutation
    - S(c);
- Try
  - S(D);
  - Threat
    - DUALS(2)
  - Vars
    - P(d);XS(D)::R1(B)
    - B(a);::S(D)
    - S(c);::S(D)
    - S(e);::S(D)
  - Refutation
    - B(a);
- Try
  - S(D);
  - Threat
    - DUALS(2)
  - Vars
    - S(e);XS(D)::R1(B)
    - B(a);::R1(B)
    - B(a);::S(D)
    - S(c);::S(D)
    - S(e);::S(D)
  - Refutation
    - S(e);
Actual
- S(D);
- Threat
  - DUALS(3)
- Vars
  - B(a);::R1(B)
  - S(c);::S(D)
  - S(e);::S(D)

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).