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Problem Display

PID: 197060 (2R5/p1Np2p1/P2k2N1/2nP4/1R5p/B2p2np/3K3Q/8 w - - 0 1)

Simkhovich, E

Zadachi i Etyudi, 1996

2R5/p1Np2p1/P2k2N1/2nP4/1R5p/B2p2np/3K3Q/8

#2

9 + 9

SOLUTION

SOUND
Sets
- 1...Sb3+
  - 2.Rxb3#
- 1...Sa4
  - 2.Rxa4#
  - 2.Rb6#
- 1...Se4+
  - 2.Rxe4#
- 1...Sxa6
  - 2.Rb6#
- 1...Se6
  - 2.Rb6#
- 1...Sb7
  - 2.Rb6#
  - 2.Rxb7#
Tries
- 1.Kc1?
  - 1...Sb3+
    - 2.Rxb3#
  - 1...Sxa6
    - 2.Rb6#
  - 1...Sa4
    - 2.Rxa4#
    - 2.Rb6#
  - 1...Se4
    - 2.Rxe4#
    - 2.Rb6#
  - 1...Se6
    - 2.Rb6#
  - 1...Sb7
    - 2.Rb6#
    - 2.Rxb7#
  - 1...d2+!
- 1.Kd1?
  - 1...Sxa6
    - 2.Rb6#
  - 1...Sb3
    - 2.Rxb3#
    - 2.Rb6#
  - 1...Sa4
    - 2.Rxa4#
    - 2.Rb6#
  - 1...Se4
    - 2.Rxe4#
    - 2.Rb6#
  - 1...Se6
    - 2.Rb6#
  - 1...Sb7
    - 2.Rb6#
    - 2.Rxb7#
  - 1...d2!
- 1.Ke1?
  - 1...Sxa6
    - 2.Rb6#
  - 1...Sb3
    - 2.Rxb3#
    - 2.Rb6#
  - 1...Sa4
    - 2.Rxa4#
    - 2.Rb6#
  - 1...Se4
    - 2.Rxe4#
    - 2.Rb6#
  - 1...Se6
    - 2.Rb6#
  - 1...Sb7
    - 2.Rb6#
    - 2.Rxb7#
  - 1...d2+!
- 1.Kc3?
  - 1...Sa4+
    - 2.Rxa4#
  - 1...Se4+
    - 2.Rxe4#
  - 1...Sxa6
    - 2.Rb6#
  - 1...Sb3
    - 2.Rxb3#
    - 2.Rb6#
  - 1...Se6
    - 2.Rb6#
  - 1...Sb7
    - 2.Rb6#
    - 2.Rxb7#
  - 1...d2!
- 1.Ke3?
  - 1...Sxa6
    - 2.Rb6#
  - 1...Sb3
    - 2.Rxb3#
    - 2.Rb6#
  - 1...Sa4
    - 2.Rxa4#
    - 2.Rb6#
  - 1...Se4
    - 2.Rxe4#
    - 2.Rb6#
  - 1...Se6
    - 2.Rb6#
  - 1...Sb7
    - 2.Rb6#
    - 2.Rxb7#
  - 1...d2!
Keys
- 1.Rf4!
  - 1...Sf1+
    - 2.Rxf1#
  - 1...Se4+
    - 2.Rxe4#
  - 1...Sh1
    - 2.Rf6#
  - 1...Se2
    - 2.Rf6#
  - 1...Sf5
    - 2.Rxf5#
  - 1...Sh5
    - 2.Rf6#

FEATURES

Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 4
Sets
- S(e);CHECK,OGATEB::B(C)+R(D),XS(e)
- S(e);XP(F)::B(C)+R(D),DCHECK
- S(e);::B(C)+R(D),DCHECK
Tries
- Try
  - K(A);S_FLIGHT
  - Vars
    - S(e);CHECK,OGATEB::B(C)+R(D),XS(e)
    - S(e);XP(F)::B(C)+R(D),DCHECK
    - S(e);::B(C)+R(D),DCHECK
  - Refutation
    - P(a);CHECK
- Try
  - K(A);P-FLIGHT
  - Vars
    - S(e);XP(F)::B(C)+R(D),DCHECK
    - S(e);::B(C)+R(D),DCHECK
  - Refutation
    - P(a);
- Try
  - K(A);S_FLIGHT
  - Vars
    - S(e);XP(F)::B(C)+R(D),DCHECK
    - S(e);::B(C)+R(D),DCHECK
  - Refutation
    - P(a);CHECK
- Try
  - K(A);S_FLIGHT
  - Vars
    - S(e);CHECK,OGATEB::B(C)+R(D),XS(e)
    - S(e);XP(F)::B(C)+R(D),DCHECK
    - S(e);::B(C)+R(D),DCHECK
  - Refutation
    - P(a);
- Try
  - K(A);S_FLIGHT
  - Vars
    - S(e);XP(F)::B(C)+R(D),DCHECK
    - S(e);::B(C)+R(D),DCHECK
  - Refutation
    - P(a);
Actual
- R(D);N_PINS(b),P_PINS(e)
- Vars
  - S(b);CHECK,OGATEB::QAB(B)+R(D),XS(b)
  - S(b);::QAB(B)+R(D),DCHECK
  - S(b);OGATEB::QAB(B)+R(D),XS(b)

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).