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Problem Display

PID: 103197 (4K3/B1p1P3/P1k4p/5N1r/2P1P2P/1P6/prp3N1/b6B w - - 0 1)

Matejo, Josef

Praca, 1954

4K3/B1p1P3/P1k4p/5N1r/2P1P2P/1P6/prp3N1/b6B

#2

11 + 8

6490	yacpdb	2009

SOLUTION

SOUND
Tries
- 1.Kf7?
  - threat
    - 2.e8Q#
    - 2.e8B#
  - 1...Kd7
    - 2.e8Q#
  - 1...Rxb3
    - 2.e8Q#
    - 2.e8B#
  - 1...Rxh4
    - 2.e8Q#
    - 2.e8B#
  - 1...c1Q
    - 2.e8Q#
    - 2.e8B#
  - 1...c1S
    - 2.e8Q#
    - 2.e8B#
  - 1...c1B
    - 2.e8Q#
    - 2.e8B#
  - 1...c1R
    - 2.e8Q#
    - 2.e8B#
  - 1...Rb1
    - 2.e8Q#
    - 2.e8B#
  - 1...Rg5
    - 2.e8Q#
    - 2.e8B#
  - 1...Rxf5+!
- 1.Kd8?
  - threat
    - 2.e8Q#
    - 2.e8B#
  - 1...Rxb3
    - 2.e8Q#
    - 2.e8B#
  - 1...Rxh4
    - 2.e8Q#
    - 2.e8B#
  - 1...c1Q
    - 2.e8Q#
    - 2.e8B#
  - 1...c1S
    - 2.e8Q#
    - 2.e8B#
  - 1...c1B
    - 2.e8Q#
    - 2.e8B#
  - 1...c1R
    - 2.e8Q#
    - 2.e8B#
  - 1...Rb1
    - 2.e8Q#
    - 2.e8B#
  - 1...Rg5
    - 2.e8Q#
    - 2.e8B#
  - 1...Rxf5!
- 1.Kf8?
  - threat
    - 2.e8Q#
    - 2.e8B#
  - 1...Kd7
    - 2.e8Q#
  - 1...Rxb3
    - 2.e8Q#
    - 2.e8B#
  - 1...Rxh4
    - 2.e8Q#
    - 2.e8B#
  - 1...c1Q
    - 2.e8Q#
    - 2.e8B#
  - 1...c1S
    - 2.e8Q#
    - 2.e8B#
  - 1...c1B
    - 2.e8Q#
    - 2.e8B#
  - 1...c1R
    - 2.e8Q#
    - 2.e8B#
  - 1...Rb1
    - 2.e8Q#
    - 2.e8B#
  - 1...Rg5
    - 2.e8Q#
    - 2.e8B#
  - 1...Rxf5+!
Keys
- 1.e5!
  - threat
    - 2.Se1#
    - 2.Sge3#
    - 2.Sf4#
    - 2.Sd4#
  - 1...Rxb3
    - 2.Sge3#
  - 1...Rxh4
    - 2.Sgxh4#
  - 1...Rxf5
    - 2.Sf4#
  - 1...c1Q
    - 2.Sd4#
  - 1...c1S
    - 2.Sd4#
  - 1...c1B
    - 2.Sd4#
  - 1...c1R
    - 2.Sd4#
  - 1...Rb1
    - 2.Se1#
  - 1...Rg5
    - 2.Sd4#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
Sets
Tries
- Try
  - K(K);S_FLIGHT
  - Threat
    - P=Q
  - Vars
    - K(f);S_FLIGHT::P=Q
    - R(c);XP(C)::P=Q
    - R(e);XP(F)::P=Q
    - P(d);::P=Q
    - R(c);::P=Q
    - R(e);::P=Q
  - Refutation
    - R(e);CHECK,XS(G)
- Try
  - K(K);P-FLIGHT
  - Threat
    - P=Q
  - Vars
    - R(c);XP(C)::P=Q
    - R(e);XP(F)::P=Q
    - P(d);::P=Q
    - R(c);::P=Q
    - R(e);::P=Q
  - Refutation
    - R(e);XS(G)
- Try
  - K(K);P-FLIGHT
  - Threat
    - P=Q
  - Vars
    - K(f);S_FLIGHT::P=Q
    - R(c);XP(C)::P=Q
    - R(e);XP(F)::P=Q
    - P(d);::P=Q
    - R(c);::P=Q
    - R(e);::P=Q
  - Refutation
    - R(e);CHECK,XS(G)
Actual
- P(E);
- Threat
  - DUALS(4)
- Vars
  - R(c);XP(C)::B(A)+S(B)
  - R(e);XP(F)::B(A)+S(B),XR(e)
  - R(e);XS(G)::B(A)+S(B)
  - P(d);::S(G)
  - R(c);::B(A)+S(B)
  - R(e);::S(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).