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Problem Display

PID: 224791 (3N4/3n4/6NK/2R3Q1/1n1k4/1q3P2/8/5B2 w - - 0 1)

Setherington, DT

Sunday Chronicle, 1944

(First published on Sun Dec 24 1944)

3N4/3n4/6NK/2R3Q1/1n1k4/1q3P2/8/5B2

#2

7 + 4

15239	Valois Notebooks	2020

SOLUTION

SOUND
Sets
- 1...Qd1
  - 2.Se6#
  - 2.Rc4#
  - 2.Qg1#
- 1...Qc2
  - 2.Se6#
- 1...Qa4
  - 2.Se6#
  - 2.Rc4#
  - 2.Qg1#
- 1...Qc4
  - 2.Rxc4#
- 1...Qd5
  - 2.Qg1#
- 1...Qe6
  - 2.Sxe6#
- 1...Qf7
  - 2.Qg1#
- 1...Qg8
  - 2.Qg1#
- 1...Qb1
  - 2.Se6#
  - 2.Rc4#
  - 2.Qg1#
- 1...Qb2
  - 2.Se6#
  - 2.Rc4#
- 1...Qa3
  - 2.Se6#
  - 2.Rc4#
- 1...Qc3
  - 2.Se6#
- 1...Qd3
  - 2.Se6#
- 1...Qe3
  - 2.Rc4#
- 1...Qxf3
  - 2.Rc4#
- 1...Sa2
  - 2.Sc6#
- 1...Sc2
  - 2.Sc6#
- 1...Sd3
  - 2.Sc6#
- 1...Sd5
  - 2.Se6#
- 1...Sa6
  - 2.Sc6#
- 1...Sc6
  - 2.Sxc6#
- 1...Sxc5
  - 2.Qe5#
- 1...Se5
  - 2.Qxe5#
- 1...Sb6
  - 2.Qe5#
- 1...Sf6
  - 2.Qe5#
- 1...Sb8
  - 2.Qe5#
- 1...Sf8
  - 2.Qe5#
Keys
- 1.Be2!
  - 1...Qxf3
    - 2.Rc4#
  - 1...Sxc5
    - 2.Qe5#
  - 1...Qc4
    - 2.Rxc4#
  - 1...Qd5
    - 2.Qg1#
  - 1...Sd5
    - 2.Se6#
  - 1...Se5
    - 2.Qxe5#
  - 1...Qd1
    - 2.Se6#
    - 2.Rc4#
  - 1...Qa2
    - 2.Qg1#
  - 1...Qc2
    - 2.Se6#
    - 2.Qg1#
  - 1...Qa4
    - 2.Se6#
    - 2.Rc4#
    - 2.Qg1#
  - 1...Qe6
    - 2.Sxe6#
  - 1...Qf7
    - 2.Qg1#
  - 1...Qg8
    - 2.Qg1#
  - 1...Qb1
    - 2.Se6#
    - 2.Rc4#
  - 1...Qb2
    - 2.Se6#
    - 2.Rc4#
    - 2.Qg1#
  - 1...Qa3
    - 2.Se6#
    - 2.Rc4#
  - 1...Qc3
    - 2.Se6#
  - 1...Qd3
    - 2.Se6#
  - 1...Qe3
    - 2.Rc4#
  - 1...Sa2
    - 2.Sc6#
  - 1...Sc2
    - 2.Sc6#
  - 1...Sd3
    - 2.Sc6#
  - 1...Sa6
    - 2.Sc6#
  - 1...Sc6
    - 2.Sxc6#
  - 1...Sb6
    - 2.Qe5#
  - 1...Sf6
    - 2.Qe5#
  - 1...Sb8
    - 2.Qe5#
  - 1...Sf8
    - 2.Qe5#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
Sets
- Q(a);N_GUARD::S(G)
- Q(a);N_GUARD::R1(C),XQ(a)
- Q(a);N_GUARD::QAB(D)
- Q(a);N_GUARD,P_PINS(E)::S(G),XQ(a)
- Q(a);N_GUARD,P_PINQ(D)::R1(C)
- Q(a);N_GUARD,XP(B)::R1(C)
- S(b);N_GUARD::S(G)
- S(b);S_CUTQ(a)::S(G)
- S(b);N_GUARD::S(G),XS(b)
- S(d);N_GUARD,XR(C)::QAB1(D)
- S(d);N_GUARD::QAB1(D),XS(d)
- S(d);N_GUARD::QAB1(D)
Actual
- B(A);
- Vars
  - Q(a);N_GUARD,XP(B)::R1(C)
  - S(d);N_GUARD,XR(C)::QAB1(D)
  - Q(a);N_GUARD::R1(C),XQ(a)
  - Q(a);N_GUARD::QAB(D)
  - S(b);S_CUTQ(a)::S(G)
  - S(d);N_GUARD::QAB1(D),XS(d)
  - Q(a);N_GUARD,P_PINS(E)::S(G),XQ(a)
  - Q(a);N_GUARD::S(G)
  - Q(a);N_GUARD,P_PINQ(D)::R1(C)
  - S(b);N_GUARD::S(G)
  - S(b);N_GUARD::S(G),XS(b)
  - S(d);N_GUARD::QAB1(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).