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Problem Display

PID: 148227 (8/8/r4P2/1p1Qp2K/q2nNkB1/1r5p/1B1P4/b4N2 w - - 0 1)

Piatesi, Antonio

Comm., Israel Ring Ty., 1985

8/8/r4P2/1p1Qp2K/q2nNkB1/1r5p/1B1P4/b4N2

#2

8 + 9

721	Variantim	1988

SOLUTION

SOUND
Sets
- 1...Re3
  - 2.dxe3#
- 1...Sc2
  - 2.Qxe5#
- 1...Se2
  - 2.Qxe5#
- 1...Sf5
  - 2.Qxe5#
- 1...Se6
  - 2.Qxe5#
Tries
- 1.Sf2?
  - threat
    - 2.Qe4#
  - 1...Re3
    - 2.dxe3#
  - 1...Sc2
    - 2.Qxe5#
  - 1...Se2
    - 2.Qxe5#
  - 1...Sf3
    - 2.Sxh3#
  - 1...Sf5
    - 2.Qxe5#
  - 1...Se6
    - 2.Qxe5#
  - 1...e4
    - 2.Qxe4#
    - 2.Qg5#
  - 1...Sc6!
- 1.Sc3?
  - threat
    - 2.Qe4#
  - 1...Sc2
    - 2.Se2#
    - 2.Qf3#
  - 1...Se2
    - 2.Sxe2#
    - 2.Qf3#
  - 1...Sf3
    - 2.Se2#
    - 2.Qxf3#
  - 1...Sf5
    - 2.Se2#
    - 2.Qf3#
  - 1...Sc6
    - 2.Se2#
    - 2.Qf3#
  - 1...Se6
    - 2.Se2#
    - 2.Qf3#
  - 1...e4
    - 2.Qxe4#
    - 2.Qg5#
  - 1...Rxc3!
- 1.Seg3?
  - threat
    - 2.Qe4#
  - 1...Re3
    - 2.dxe3#
  - 1...Sc2
    - 2.Se2#
    - 2.Qxe5#
  - 1...Se2
    - 2.Sxe2#
    - 2.Qxe5#
  - 1...Sf3
    - 2.Se2#
  - 1...Sf5
    - 2.Se2#
    - 2.Qxe5#
  - 1...Sc6
    - 2.Se2#
  - 1...Se6
    - 2.Se2#
    - 2.Qxe5#
  - 1...e4
    - 2.Qxe4#
    - 2.Qg5#
  - 1...Rxg3!
- 1.Sc5?
  - threat
    - 2.Qe4#
  - 1...Re3
    - 2.dxe3#
  - 1...Sc2
    - 2.Qxe5#
  - 1...Se2
    - 2.Qxe5#
  - 1...Sf5
    - 2.Qxe5#
  - 1...Sc6
    - 2.Se6#
  - 1...Se6
    - 2.Qxe5#
  - 1...e4
    - 2.Qxe4#
    - 2.Qg5#
  - 1...Sf3!
Keys
- 1.Sg5!
  - threat
    - 2.Qe4#
  - 1...Re3
    - 2.dxe3#
  - 1...Sc2
    - 2.Qxe5#
  - 1...Se2
    - 2.Qxe5#
  - 1...Sf3
    - 2.Sxh3#
  - 1...Sf5
    - 2.Qxe5#
  - 1...Sc6
    - 2.Se6#
  - 1...Se6
    - 2.Qxe5#
  - 1...e4
    - 2.Qxe4#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
Sets
- R(b);OGATE::P(C),XR(b)
- S(e);::QAB1(F),XP(h)
Tries
- Try
  - S(D);
  - Threat
    - QAR1(F)
  - Vars
    - R(b);OGATE::P(C),XR(b)
    - S(e);::QAB1(F),XP(h)
    - S(e);S_CUTR(b)::S(D),XP(c)
  - Refutation
    - S(e);
- Try
  - S(D);
  - Threat
    - QAR1(F)
  - Refutation
    - R(b);XS(D)
- Try
  - S(D);
  - Threat
    - QAR1(F)
  - Vars
    - R(b);OGATE::P(C),XR(b)
    - S(e);N_GUARD::S(D)
  - Refutation
    - R(b);XS(D)
- Try
  - S(D);
  - Threat
    - QAR1(F)
  - Vars
    - R(b);OGATE::P(C),XR(b)
    - S(e);::QAB1(F),XP(h)
    - S(e);N_GUARD,S_CUTR(i)::S(D)
  - Refutation
    - S(e);
Actual
- S(D);
- Threat
  - QAR1(F)
- Vars
  - R(b);OGATE::P(C),XR(b)
  - S(e);::QAB1(F),XP(h)
  - S(e);S_CUTR(b)::S(D),XP(c)
  - S(e);N_GUARD,S_CUTR(i)::S(D)
  - P(h);::QAR1(F),XP(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).