Meson Chess Problem Database

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Problem Display

PID: 186044 (2b4B/2q1p1QK/3P2pp/7r/1R1N3r/P1k3PR/4P3/5N2 w - - 0 1)

Stanley, Cyril (Kipping, Cyril Stanley)

Chess, 1958

2b4B/2q1p1QK/3P2pp/7r/1R1N3r/P1k3PR/4P3/5N2

#2

11 + 8

SOLUTION

SOUND
Sets
- 1...e5
  - 2.Qxc7#
- 1...e6
  - 2.gxh4#
Keys
- 1.Qf7!
  - threat
    - 2.Rb3#
    - 2.Qb3#
    - 2.Qf3#
  - 1...Rxd4
    - 2.Qb3#
  - 1...exd6
    - 2.Rb3#
  - 1...Qb6
    - 2.Qb3#
    - 2.Qc4#
    - 2.Qf3#
  - 1...Qb8
    - 2.Qb3#
    - 2.Qc4#
    - 2.Qf3#
  - 1...Qc4
    - 2.Qxc4#
  - 1...Qc6
    - 2.Rb3#
    - 2.Qb3#
  - 1...Qb7
    - 2.Qb3#
    - 2.Qc4#
  - 1...Re4
    - 2.Rb3#
    - 2.Qb3#
  - 1...Rf4
    - 2.Rb3#
    - 2.Qb3#
  - 1...Rb5
    - 2.Qb3#
    - 2.Qf3#
  - 1...Rd5
    - 2.Qf3#
  - 1...Re5
    - 2.Qb3#
  - 1...Rf5
    - 2.Rb3#
    - 2.Qb3#
  - 1...Bg4
    - 2.Rb3#
    - 2.Qb3#
  - 1...Bf5
    - 2.Rb3#
    - 2.Qb3#
  - 1...Ba6
    - 2.Rb3#
    - 2.Qb3#
  - 1...Be6
    - 2.Qf3#
  - 1...Bb7
    - 2.Rb3#
    - 2.Qb3#
  - 1...e5
    - 2.Qxc7#
  - 1...e6
    - 2.gxh4#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
Sets
- P(g);OGATE,P_PINQ(I)::QAR(I),XQ(f)
- P(g);P_PINQ(I),S_CUTB(h)::R(E)+P(D),XR(b)
Actual
- Q(I);
- Threat
  - DUALS(3)
- Vars
  - R(b);P_SPINR(b),XS(G)::QAR1(I)
  - P(g);P_PINQ(I),XP(H)::R1(F)
  - Q(f);N_GUARD::QAR1(I),XQ(f)
  - R(c);::QAR(I)
  - R(c);::QAR1(I)
  - B(h);::QAR(I)
  - P(g);OGATE,P_PINQ(I)::QAR(I),XQ(f)
  - P(g);P_PINQ(I),S_CUTB(h)::R(E)+P(D),XR(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).