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Problem Display

PID: 159690 (1n6/3p3K/q2N4/2k2p2/1R6/P3P3/8/3RB2B w - - 0 1)

Andrew, Frederick William

Birmingham News, 1900

(First published on Fri Jan 26 1900)

1n6/3p3K/q2N4/2k2p2/1R6/P3P3/8/3RB2B

#2

8 + 5

15351	SCPF/BCPS Black Books	2017

SOLUTION

SOUND
Sets
- 1...Qf1
  - 2.Sb7#
- 1...Qe2
  - 2.Sb7#
- 1...Qd3
  - 2.Sb7#
- 1...Qc4
  - 2.Sb7#
- 1...Qb5
  - 2.Rxb5#
- 1...Qb7
  - 2.Sxb7#
- 1...Qc8
  - 2.Rb5#
- 1...Qxa3
  - 2.Sb7#
  - 2.Rb5#
- 1...Qa4
  - 2.Sb7#
- 1...Qa5
  - 2.Sb7#
- 1...Qb6
  - 2.Rc4#
- 1...Qxd6
  - 2.Rc1#
- 1...Qa7
  - 2.Rb5#
- 1...Qa8
  - 2.Rb5#
- 1...Sc6
  - 2.Rd5#
Tries
- 1.Bg3?
  - 1...Qxa3
    - 2.Rb5#
  - 1...Qxd6
    - 2.Bxd6#
    - 2.Rc1#
  - 1...Qb5
    - 2.Rxb5#
  - 1...Qc6
    - 2.Rc1#
  - 1...Qf1
    - 2.Sb7#
  - 1...Qe2
    - 2.Sb7#
  - 1...Qd3
    - 2.Sb7#
  - 1...Qc4
    - 2.Sb7#
  - 1...Qb7
    - 2.Sxb7#
    - 2.Rc1#
  - 1...Qc8
    - 2.Rc1#
    - 2.Rb5#
  - 1...Qa4
    - 2.Sb7#
  - 1...Qa5
    - 2.Sb7#
    - 2.Rc1#
  - 1...Qb6
    - 2.Rc1#
    - 2.Rc4#
  - 1...Qa7
    - 2.Rc1#
    - 2.Rb5#
  - 1...Qa8
    - 2.Rc1#
    - 2.Rb5#
  - 1...Sc6
    - 2.Rd5#
  - 1...f4!
- 1.Rc1+?
  - 1...Qc4
    - 2.Sb7#
  - 1...Kxd6!
Keys
- 1.Bf2!
  - 1...Qxa3
    - 2.Rb5#
  - 1...Qxd6
    - 2.Rc1#
  - 1...Qd3
    - 2.Sb7#
  - 1...Qb5
    - 2.Rxb5#
  - 1...Qc6
    - 2.e4#
  - 1...Qf1
    - 2.Sb7#
  - 1...Qe2
    - 2.Sb7#
  - 1...Qc4
    - 2.Sb7#
  - 1...Qb7
    - 2.Sxb7#
  - 1...Qc8
    - 2.Rb5#
  - 1...Qa4
    - 2.Sb7#
  - 1...Qa5
    - 2.Sb7#
  - 1...Qb6
    - 2.Rc4#
  - 1...Qa7
    - 2.Rb5#
  - 1...Qa8
    - 2.Rb5#
  - 1...Sc6
    - 2.Rd5#
  - 1...f4
    - 2.exf4#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
Sets
- Q(c);N_GUARD::S(G)
- Q(c);N_GUARD::R1(F),XQ(c)
- Q(c);N_GUARD::S(G),XQ(c)
- Q(c);N_GUARD::R1(F)
- Q(c);N_GUARD,SBLOCK::R1(F)
- Q(c);N_GUARD,SBLOCK,XS(G)::R(A)
- S(e);SBLOCK::R1(A)
Tries
- Try
  - B(B);
  - Vars
    - Q(c);N_GUARD,XP(D)::R1(F)
    - Q(c);N_GUARD::R1(F),XQ(c)
    - Q(c);N_GUARD::R(A)
    - Q(c);N_GUARD::S(G)
    - S(e);SBLOCK::R1(A)
  - Refutation
    - P(b);
- Try
  - R(A);CHECK
  - Vars
    - Q(c);P_SPINQ(c)::S(G)
  - Refutation
    - K(a);S_FLIGHT,XS(G)
Actual
- B(B);
- Vars
  - Q(c);N_GUARD,XP(D)::R1(F)
  - Q(c);N_GUARD,SBLOCK,XS(G)::R(A)
  - Q(c);N_GUARD::S(G)
  - Q(c);N_GUARD::R1(F),XQ(c)
  - Q(c);SBLOCK::B(B)+P(E)
  - Q(c);N_GUARD::S(G),XQ(c)
  - Q(c);N_GUARD::R1(F)
  - Q(c);N_GUARD,SBLOCK::R1(F)
  - S(e);SBLOCK::R1(A)
  - P(b);OGATE::B(B)+P(E),XP(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).