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Problem Display

PID: 109339 (3b1B2/2p1r3/B1P5/1R1P4/2k5/3bRN2/1K6/8 w - - 0 1)

Schiffert, Gyorgy

Nederlandse Schaakbond, 1980

3b1B2/2p1r3/B1P5/1R1P4/2k5/3bRN2/1K6/8

#2

8 + 5

6490	yacpdb	2009

SOLUTION

SOUND
Sets
- 1...Rxe3
  - 2.Ra5#
- 1...Re4
  - 2.Ra5#
- 1...Re5
  - 2.Ra5#
- 1...Re6
  - 2.Ra5#
- 1...Rd7
  - 2.Ra5#
- 1...Rf7
  - 2.Ra5#
- 1...Rg7
  - 2.Ra5#
- 1...Rh7
  - 2.Ra5#
- 1...Re8
  - 2.Ra5#
- 1...Bb1
  - 2.Rc3#
- 1...Bf1
  - 2.Rc3#
- 1...Bc2
  - 2.Rc3#
- 1...Be2
  - 2.Rc3#
- 1...Be4
  - 2.Rc3#
- 1...Bf5
  - 2.Rc3#
- 1...Bg6
  - 2.Rc3#
- 1...Bh7
  - 2.Rc3#
Tries
- 1.Re4+?
  - 1...Rxe4
    - 2.Ra5#
  - 1...Bxe4!
Keys
- 1.Ka3!
  - 1...Kc3
    - 2.Rc5#
  - 1...Rxe3
    - 2.Rc5#
  - 1...Re4
    - 2.Rc5#
  - 1...Re5
    - 2.Rc5#
  - 1...Re6
    - 2.Rc5#
  - 1...Rd7
    - 2.Rc5#
  - 1...Rf7
    - 2.Rc5#
  - 1...Rg7
    - 2.Rc5#
  - 1...Rh7
    - 2.Rc5#
  - 1...Re8
    - 2.Rc5#
  - 1...Bb1
    - 2.Ra5#
  - 1...Bf1
    - 2.Ra5#
  - 1...Bc2
    - 2.Ra5#
  - 1...Be2
    - 2.Ra5#
  - 1...Be4
    - 2.Ra5#
  - 1...Bf5
    - 2.Ra5#
  - 1...Bg6
    - 2.Ra5#
  - 1...Bh7
    - 2.Ra5#

FEATURES

Static
- TYPE = MUTATE
- CHANGED MATES = 17
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- R(d);XR(B)::B(F)+R(D)
- R(d);::B(F)+R(D)
- B(a);OGATE::R1(B)
Tries
- Try
  - R(B);CHECK
  - Vars
    - R(d);XR(B)::B(F)+R(D)
  - Refutation
    - B(a);XR(B)
Actual
- K(A);S_FLIGHT
- Vars
  - K(b);P-FLIGHT,P_SPINB(a)::R(D)
  - R(d);XR(B)::B(F)+R(D),DCHECK
  - R(d);::B(F)+R(D),DCHECK
  - B(a);::B(F)+R(D)

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).