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Problem Display

PID: 79775 (8/4r1bq/1p4N1/1K1k1Pn1/1B3Q2/2p1r3/1nN5/8 w - - 0 1)

Savournin, Jacques

L'Echiquier de France, 1958

8/4r1bq/1p4N1/1K1k1Pn1/1B3Q2/2p1r3/1nN5/8

#2

6 + 9

SOLUTION

SOUND
Sets
- 1...Rd3
  - 2.Sxe7#
- 1...Rf3
  - 2.Sxe7#
- 1...Rg3
  - 2.Sxe7#
- 1...Rh3
  - 2.Sxe7#
- 1...R3e4
  - 2.Qd6#
- 1...R3e5
  - 2.Qd4#
- 1...R7e4
  - 2.Qd6#
- 1...R7e5
  - 2.Qd4#
- 1...Ra7
  - 2.Sxe3#
- 1...Rb7
  - 2.Sxe3#
- 1...Rc7
  - 2.Sxe3#
- 1...Rd7
  - 2.Sxe3#
- 1...Rf7
  - 2.Sxe3#
- 1...Bd4
  - 2.Qxd4#
- 1...Be5
  - 2.Sxe3#
- 1...Bh6
  - 2.Qd4#
- 1...Bf8
  - 2.Qd4#
- 1...Sd1
  - 2.Qc4#
- 1...Sd3
  - 2.Qc4#
- 1...Sa4
  - 2.Qc4#
- 1...Sc4
  - 2.Qxc4#
- 1...Se4
  - 2.Sxe7#
- 1...Se6
  - 2.Sxe3#
  - 2.Sxe7#
Tries
- 1.Bc5?
  - threat
    - 2.Sb4#
  - 1...R3e4
    - 2.Qd6#
  - 1...R7e4
    - 2.Qd6#
  - 1...Sd3
    - 2.Qc4#
  - 1...bxc5!
- 1.Bxe7?
  - threat
    - 2.Sxe3#
    - 2.Sb4#
  - 1...Rxe7
    - 2.Sb4#
    - 2.Sxe7#
  - 1...Qh3
    - 2.Sb4#
  - 1...Re1
    - 2.Sb4#
  - 1...Re2
    - 2.Sb4#
  - 1...Rd3
    - 2.Sb4#
  - 1...Rf3
    - 2.Sb4#
  - 1...Rg3
    - 2.Sb4#
  - 1...Rh3
    - 2.Sb4#
  - 1...Re4
    - 2.Qd6#
  - 1...Re5
    - 2.Sb4#
    - 2.Qd4#
  - 1...Re6
    - 2.Sb4#
  - 1...Bd4
    - 2.Sb4#
    - 2.Qxd4#
  - 1...Sd1
    - 2.Sb4#
    - 2.Qc4#
  - 1...Sd3
    - 2.Sxe3#
    - 2.Qc4#
  - 1...Sc4
    - 2.Sb4#
    - 2.Qxc4#
  - 1...Se4!
Keys
- 1.Ba3!
  - threat
    - 2.Sb4#
  - 1...R3e4
    - 2.Qd6#
  - 1...R3e5
    - 2.Qd4#
  - 1...R7e4
    - 2.Qd6#
  - 1...R7e5
    - 2.Qd4#
  - 1...Be5
    - 2.Sxe3#
  - 1...Sd3
    - 2.Qc4#
  - 1...Se4
    - 2.Sxe7#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 15
Sets
- R(c);N_GUARD::S(F),XR(g)
- R(c);SBLOCK::QAR1(C)
- R(c);S_CUTB(h)::QAR1(C)
- R(g);SBLOCK::QAR1(C)
- R(g);S_CUTB(h)::QAR1(C)
- R(g);N_GUARD::S(A),XR(c)
- B(h);N_GUARD::QAR1(C),XB(h)
- B(h);S_CUTR(g)::S(A),XR(c)
- B(h);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(e);S_CUTR(c)::S(F),XR(g)
Tries
- Try
  - B(B);
  - Threat
    - S(A)
  - Vars
    - R(c);SBLOCK::QAR1(C)
    - R(g);SBLOCK::QAR1(C)
    - S(a);N_GUARD::QAB1(C)
  - Refutation
    - P(f);XB(B)
- Try
  - B(B);XR(g)
  - Threat
    - DUALS(2)
  - Vars
    - Q(i);::S(A)
    - R(c);::S(A)
    - R(c);SBLOCK::QAR1(C)
  - Refutation
    - S(e);
Actual
- B(B);
- Threat
  - S(A)
- Vars
  - R(c);SBLOCK::QAR1(C)
  - R(c);S_CUTB(h)::QAR1(C)
  - R(g);SBLOCK::QAR1(C)
  - R(g);S_CUTB(h)::QAR1(C)
  - B(h);S_CUTR(g)::S(A),XR(c)
  - S(a);N_GUARD::QAB1(C)
  - S(e);S_CUTR(c)::S(F),XR(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).