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Problem Display

PID: 87671 (8/8/6R1/8/2N2p2/7N/3K2n1/5k2 w - - 0 1)

Mladenovic, Slobodan

Buletin Problemistic, 1988

8/8/6R1/8/2N2p2/7N/3K2n1/5k2

#2

4 + 3

6490	yacpdb	2009

SOLUTION

SOUND
Sets
- 1...Se1
  - 2.Rg1#
- 1...Se3
  - 2.Rg1#
- 1...Sh4
  - 2.Rg1#
Tries
- 1.Sb2?
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...f3!
- 1.Sa3?
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...f3!
- 1.Se3+?
  - 1...Sxe3
    - 2.Rg1#
  - 1...fxe3+!
- 1.Sa5?
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...f3!
- 1.Se5?
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...f3!
- 1.Sb6?
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...f3!
- 1.Sd6?
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...f3!
- 1.Rg3?
  - threat
    - 2.Rf3#
  - 1...f3
    - 2.Rxf3#
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...fxg3!
- 1.Rg4?
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...f3!
- 1.Rg5?
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...f3!
- 1.Rg7?
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...f3!
- 1.Rg8?
  - 1...Se1
    - 2.Rg1#
  - 1...Se3
    - 2.Rg1#
  - 1...Sh4
    - 2.Rg1#
  - 1...f3!
Keys
- 1.Rf6!
  - 1...Se1
    - 2.Se3#
  - 1...Se3
    - 2.Sxe3#
  - 1...Sh4
    - 2.Se3#
  - 1...f3
    - 2.Rxf3#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- S(b);OGATE::R1(D)
Tries
- Try
  - S(C);
  - Vars
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);
- Try
  - S(C);
  - Vars
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);
- Try
  - S(C);CHECK
  - Vars
    - S(b);OGATE,XS(C)::R1(D)
  - Refutation
    - P(c);CHECK,XS(C)
- Try
  - S(C);
  - Vars
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);
- Try
  - S(C);
  - Vars
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);
- Try
  - S(C);
  - Vars
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);
- Try
  - S(C);
  - Vars
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);
- Try
  - R(D);
  - Threat
    - R(D)
  - Vars
    - P(c);::R(D),XP(c)
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);XR(D)
- Try
  - R(D);
  - Vars
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);
- Try
  - R(D);
  - Vars
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);
- Try
  - R(D);
  - Vars
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);
- Try
  - R(D);
  - Vars
    - S(b);OGATE::R1(D)
  - Refutation
    - P(c);
Actual
- R(D);P_PINP(c)
- Vars
  - S(b);N_GUARD::S(C)
  - S(b);N_GUARD::S(C),XS(b)
  - P(c);OGATE::R(D),XP(c)

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).