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Problem Display

PID: 159452 (3nr2n/5p1K/7p/Q2BPk1N/3p2NP/3P3P/7b/5r2 w - - 0 1)

Wessels, Martin

Neue Osnabrucker Zeitung, 2000

3nr2n/5p1K/7p/Q2BPk1N/3p2NP/3P3P/7b/5r2

#2

9 + 9

15391	Problemschach-Jahrbuch (2000)	2001

SOLUTION

SOUND
Sets
- 1...Rf4
  - 2.Sg7#
- 1...Rxe5
  - 2.Sxh6#
- 1...Re6
  - 2.Be4#
- 1...Bf4
  - 2.Sg7#
- 1...Bxe5
  - 2.Sxh6#
- 1...Se6
  - 2.Be4#
Tries
- 1.Se3+?
  - 1...Kxe5
    - 2.Qc7#
  - 1...dxe3!
- 1.Ba2?
  - threat
    - 2.Sxh6#
  - 1...Bf4
    - 2.Sg7#
  - 1...Re6!
- 1.Bb3?
  - threat
    - 2.Sxh6#
  - 1...Bf4
    - 2.Sg7#
  - 1...Re6!
- 1.Bc4?
  - threat
    - 2.Sxh6#
  - 1...Bf4
    - 2.Sg7#
  - 1...Re6!
- 1.Qe1?
  - threat
    - 2.Sxh6#
    - 2.Qe4#
  - 1...Rxe5
    - 2.Sxh6#
  - 1...Re6
    - 2.Be4#
    - 2.Qe4#
  - 1...Rf4
    - 2.Sxh6#
    - 2.Sg7#
  - 1...Bf4
    - 2.Sg7#
    - 2.Qe4#
  - 1...Rxe1!
- 1.Qd2?
  - threat
    - 2.Sg7#
  - 1...Bxe5
    - 2.Sxh6#
  - 1...Se6
    - 2.Be4#
  - 1...Rg8!
- 1.Qb6?
  - threat
    - 2.Be4#
    - 2.Qf6#
  - 1...Rxe5
    - 2.Sxh6#
    - 2.Qf6#
  - 1...Bxe5
    - 2.Sxh6#
    - 2.Be4#
  - 1...Re6
    - 2.Be4#
  - 1...Re1
    - 2.Qf6#
  - 1...Rf4
    - 2.Sg7#
    - 2.Qf6#
  - 1...Se6
    - 2.Be4#
  - 1...f6
    - 2.Be4#
    - 2.Qxf6#
  - 1...Sc6!
- 1.Qa2?
  - threat
    - 2.Be4#
  - 1...Rxe5
    - 2.Sxh6#
  - 1...Rf4
    - 2.Sg7#
  - 1...Re1!
- 1.Qa6?
  - threat
    - 2.Be4#
    - 2.Qf6#
  - 1...Rxe5
    - 2.Sxh6#
    - 2.Qf6#
  - 1...Bxe5
    - 2.Sxh6#
    - 2.Be4#
  - 1...Re1
    - 2.Qf6#
  - 1...Rf4
    - 2.Sg7#
    - 2.Qf6#
  - 1...Re6
    - 2.Be4#
  - 1...Se6
    - 2.Be4#
  - 1...f6
    - 2.Be4#
    - 2.Qxf6#
  - 1...Sc6!
Keys
- 1.Qc7!
  - threat
    - 2.Sxh6#
  - 1...Re6
    - 2.Be4#
  - 1...Bf4
    - 2.Sg7#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
Sets
- R(a);SBLOCK::S(H)
- R(h);SBLOCK,XP(G)::S(C),XP(e)
- R(h);SBLOCK::B(F)
- B(b);SBLOCK::S(H)
- B(b);SBLOCK,XP(G)::S(C),XP(e)
- S(g);SBLOCK::B(F)
Tries
- Try
  - S(C);CHECK
  - Vars
    - K(d);P-FLIGHT,XP(G)::QAB(E)
  - Refutation
    - P(c);XS(C)
- Try
  - B(F);
  - Threat
    - S(C),XP(e)
  - Vars
    - B(b);SBLOCK::S(H)
  - Refutation
    - R(h);
- Try
  - B(F);
  - Threat
    - S(C),XP(e)
  - Vars
    - B(b);SBLOCK::S(H)
  - Refutation
    - R(h);
- Try
  - B(F);
  - Threat
    - S(C),XP(e)
  - Vars
    - B(b);SBLOCK::S(H)
  - Refutation
    - R(h);
- Try
  - Q(E);
  - Threat
    - DUALS(2)
  - Vars
    - R(h);XP(G)::S(C),XP(e)
  - Refutation
    - R(a);XQ(E)
- Try
  - Q(E);
  - Threat
    - S(H)
  - Vars
    - B(b);SBLOCK,XP(G)::S(C),XP(e)
    - S(g);SBLOCK::B(F)
  - Refutation
    - R(h);
- Try
  - Q(E);
  - Threat
    - DUALS(2)
  - Vars
    - R(h);::B(F)
    - R(a);::QAR1(E)
    - S(g);::B(F)
  - Refutation
    - S(g);
- Try
  - Q(E);
  - Threat
    - B(F)
  - Vars
    - R(h);SBLOCK,XP(G)::S(C),XP(e)
    - R(a);SBLOCK::S(H)
  - Refutation
    - R(a);
- Try
  - Q(E);
  - Threat
    - DUALS(2)
  - Vars
    - R(a);::QAR1(E)
    - R(h);::B(F)
    - S(g);::B(F)
  - Refutation
    - S(g);
Actual
- Q(E);
- Threat
  - S(C),XP(e)
- Vars
  - R(h);SBLOCK::B(F)
  - B(b);SBLOCK::S(H)

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).