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Problem Display

PID: 243581 (3r4/Qb4q1/3p4/3Nn1R1/PpkNPp2/8/1nB5/bR3K2 w - - 0 1)

Dimitrov, Nikolai

Rochade Europa, 2009

3r4/Qb4q1/3p4/3Nn1R1/PpkNPp2/8/1nB5/bR3K2

#2

9 + 10

15148	Sadier Collection	2021

SOLUTION

SOUND
Sets
- 1...Sd1
  - 2.Rxb4#
- 1...Sbd3
  - 2.Bb3#
- 1...Sxa4
  - 2.Rxb4#
- 1...Sed3
  - 2.Bb3#
Tries
- 1.Se2?
  - threat
    - 2.Qd4#
  - 1...Sxa4
    - 2.Rxb4#
  - 1...Sd1
    - 2.Rxb4#
  - 1...Sbd3
    - 2.Bb3#
  - 1...Sed3
    - 2.Sb6#
  - 1...Sf3
    - 2.Sb6#
  - 1...Sg4
    - 2.Sb6#
  - 1...Sc6
    - 2.Sb6#
  - 1...Sg6
    - 2.Sb6#
  - 1...Sf7
    - 2.Sb6#
  - 1...Sd7!
- 1.Sb3?
  - threat
    - 2.Sd2#
    - 2.Sa5#
    - 2.Qd4#
  - 1...Bxd5
    - 2.Qd4#
  - 1...Qc7
    - 2.Sd2#
    - 2.Qd4#
  - 1...Sd1
    - 2.Sd2#
    - 2.Sa5#
  - 1...Sbd3
    - 2.Sd2#
    - 2.Sa5#
  - 1...Sed3
    - 2.Sd2#
    - 2.Sa5#
  - 1...Sf3
    - 2.Sa5#
  - 1...Sg4
    - 2.Sd2#
    - 2.Sa5#
  - 1...Sc6
    - 2.Sd2#
  - 1...Sg6
    - 2.Sd2#
    - 2.Sa5#
  - 1...Sd7
    - 2.Sd2#
    - 2.Sa5#
  - 1...Sf7
    - 2.Sd2#
    - 2.Sa5#
  - 1...Sxa4!
- 1.Sf3?
  - threat
    - 2.Sd2#
    - 2.Qd4#
  - 1...Bxd5
    - 2.Qd4#
  - 1...Sxa4
    - 2.Rxb4#
  - 1...Sd1
    - 2.Sd2#
    - 2.Rxb4#
  - 1...Sbd3
    - 2.Sd2#
    - 2.Bb3#
  - 1...Sed3
    - 2.Sd2#
  - 1...Sg4
    - 2.Sd2#
  - 1...Sc6
    - 2.Sd2#
  - 1...Sg6
    - 2.Sd2#
  - 1...Sd7
    - 2.Sd2#
  - 1...Sf7
    - 2.Sd2#
  - 1...Sxf3!
Keys
- 1.Sb5!
  - threat
    - 2.Qd4#
  - 1...Sxa4
    - 2.Rxb4#
  - 1...Sd1
    - 2.Rxb4#
  - 1...Sbd3
    - 2.Bb3#
  - 1...Sed3
    - 2.Sb6#
  - 1...Sf3
    - 2.Sb6#
  - 1...Sg4
    - 2.Sb6#
  - 1...Sc6
    - 2.Sb6#
  - 1...Sg6
    - 2.Sb6#
  - 1...Sd7
    - 2.Sxd6#
  - 1...Sf7
    - 2.Sb6#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 0
Sets
- S(b);OGATE::R1(A),XP(c)
- S(b);SBLOCK::B(C)
- S(b);OGATE,XP(D)::R1(A),XP(c)
- S(f);SBLOCK::B(C)
Tries
- Try
  - S(E);
  - Threat
    - QAR1(I)
  - Vars
    - S(b);OGATE,XP(D)::R1(A),XP(c)
    - S(b);OGATE::R1(A),XP(c)
    - S(b);SBLOCK::B(C)
    - S(f);::S(G)
  - Refutation
    - S(f);
- Try
  - S(E);
  - Threat
    - DUALS(3)
  - Vars
    - B(h);XS(G)::QAR1(I)
    - S(f);::S(E)
  - Refutation
    - S(b);XP(D)
- Try
  - S(E);
  - Threat
    - DUALS(2)
  - Vars
    - B(h);XS(G)::QAR1(I)
    - S(b);OGATE,XP(D)::R1(A),XP(c)
    - S(f);::S(E)
  - Refutation
    - S(f);XS(E)
Actual
- S(E);
- Threat
  - QAR1(I)
- Vars
  - S(b);OGATE,XP(D)::R1(A),XP(c)
  - S(b);OGATE::R1(A),XP(c)
  - S(b);SBLOCK::B(C)
  - S(f);::S(G)
  - S(f);S_CUTR(j)::S(E),XP(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).