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Problem Display

PID: 231114 (2k1b1BR/R2NK3/8/8/8/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1927

2k1b1BR/R2NK3/8/8/8/8/8/8

#2

5 + 2

6490	yacpdb	2021

SOLUTION

SOUND
Sets
- 1...Bh5
  - 2.Bf7#
- 1...Bg6
  - 2.Bf7#
- 1...Bxd7
  - 2.Be6#
- 1...Bf7
  - 2.Bxf7#
Tries
- 1.Kf6?
  - 1...Bxd7
    - 2.Be6#
  - 1...Bh5
    - 2.Bf7#
  - 1...Bg6
    - 2.Bf7#
  - 1...Bf7
    - 2.Bxf7#
  - 1...Kd8!
- 1.Sc5?
  - 1...Ba4
    - 2.Be6#
  - 1...Bb5
    - 2.Be6#
  - 1...Bh5
    - 2.Be6#
    - 2.Bf7#
  - 1...Bc6
    - 2.Be6#
  - 1...Bg6
    - 2.Be6#
    - 2.Bf7#
  - 1...Bd7
    - 2.Be6#
  - 1...Bf7
    - 2.Bxf7#
  - 1...Kb8!
- 1.Se5?
  - 1...Ba4
    - 2.Be6#
  - 1...Bb5
    - 2.Be6#
  - 1...Bh5
    - 2.Be6#
    - 2.Bf7#
  - 1...Bc6
    - 2.Be6#
  - 1...Bg6
    - 2.Be6#
    - 2.Bf7#
  - 1...Bd7
    - 2.Be6#
  - 1...Bf7
    - 2.Bxf7#
  - 1...Kb8!
- 1.Sf6?
  - 1...Ba4
    - 2.Be6#
  - 1...Bb5
    - 2.Be6#
  - 1...Bh5
    - 2.Be6#
    - 2.Bf7#
  - 1...Bc6
    - 2.Be6#
  - 1...Bg6
    - 2.Be6#
    - 2.Bf7#
  - 1...Bd7
    - 2.Be6#
  - 1...Bf7
    - 2.Bxf7#
  - 1...Kb8!
- 1.Sb8?
  - 1...Ba4
    - 2.Be6#
  - 1...Bb5
    - 2.Be6#
  - 1...Bh5
    - 2.Be6#
    - 2.Bf7#
  - 1...Bc6
    - 2.Be6#
  - 1...Bg6
    - 2.Be6#
    - 2.Bf7#
  - 1...Bd7
    - 2.Be6#
  - 1...Bf7
    - 2.Bxf7#
  - 1...Kxb8!
Keys
- 1.Kd6!
  - 1...Kd8
    - 2.Ra8#
  - 1...Bxd7
    - 2.Be6#
  - 1...Bh5
    - 2.Bf7#
  - 1...Bg6
    - 2.Bf7#
  - 1...Bf7
    - 2.Bxf7#

FEATURES

Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
Sets
- B(b);OGATEB::R(E)+B(D)
- B(b);OGATEB,XS(B)::R(E)+B(D)
- B(b);OGATEB::R(E)+B(D),XB(b)
Tries
- Try
  - K(C);S_FLIGHT
  - Vars
    - B(b);OGATEB,XS(B)::R(E)+B(D)
    - B(b);OGATEB::R(E)+B(D)
    - B(b);OGATEB::R(E)+B(D),XB(b)
  - Refutation
    - K(a);P-FLIGHT
- Try
  - S(B);
  - Vars
    - B(b);::R(E)+B(D),DCHECK
    - B(b);::R(E)+B(D)
    - B(b);OGATEB::R(E)+B(D),XB(b)
  - Refutation
    - K(a);P-FLIGHT
- Try
  - S(B);
  - Vars
    - B(b);::R(E)+B(D),DCHECK
    - B(b);::R(E)+B(D)
    - B(b);OGATEB::R(E)+B(D),XB(b)
  - Refutation
    - K(a);P-FLIGHT
- Try
  - S(B);
  - Vars
    - B(b);::R(E)+B(D),DCHECK
    - B(b);::R(E)+B(D)
    - B(b);OGATEB::R(E)+B(D),XB(b)
  - Refutation
    - K(a);P-FLIGHT
- Try
  - S(B);
  - Vars
    - B(b);::R(E)+B(D),DCHECK
    - B(b);::R(E)+B(D)
    - B(b);OGATEB::R(E)+B(D),XB(b)
  - Refutation
    - K(a);P-FLIGHT,XS(B)
Actual
- K(C);S_FLIGHT
- Vars
  - K(a);P-FLIGHT::R(A)
  - B(b);OGATEB,XS(B)::R(E)+B(D)
  - B(b);OGATEB::R(E)+B(D)
  - B(b);OGATEB::R(E)+B(D),XB(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).