Meson Chess Problem Database

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Problem Display

PID: 208046 (6N1/1p1p4/1P1p2P1/1Rpkn1R1/P7/1p4p1/1B2P1Np/7K w - - 0 1)

Collins, Francis Charles

Dubuque Chess Journal, 1873

6N1/1p1p4/1P1p2P1/1Rpkn1R1/P7/1p4p1/1B2P1Np/7K

#2

10 + 9

6490	yacpdb	2020

SOLUTION

SOUND
Sets
- 1...Kc4
  - 2.Se3#
- 1...Ke4
  - 2.Sf6#
- 1...Kc6
  - 2.Se7#
- 1...Ke6
  - 2.Sf4#
Tries
- 1.Ba1?
  - 1...Kc4
    - 2.Se3#
  - 1...Ke4
    - 2.Sf6#
  - 1...Kc6
    - 2.Se7#
  - 1...Ke6
    - 2.Sf4#
  - 1...b2!
- 1.Rxe5+?
  - 1...Kc4
    - 2.Se3#
  - 1...Kc6
    - 2.Se7#
  - 1...dxe5!
- 1.g7?
  - 1...Kc4
    - 2.Se3#
  - 1...Ke4
    - 2.Sf6#
  - 1...Kc6
    - 2.Se7#
  - 1...Ke6!
Keys
- 1.Rh5!
  - 1...Kc4
    - 2.Se3#
  - 1...Ke4
    - 2.Sf6#
  - 1...Kc6
    - 2.Se7#
  - 1...Ke6
    - 2.Sf4#

FEATURES

Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
Sets
- K(e);N_SPINP(d),N_SPINS(f),S_FLIGHT::S(D)
- K(e);N_SPINP(d),N_SPINS(f),S_FLIGHT::S(J)
Tries
- Try
  - B(B);
  - Vars
    - K(e);N_SPINP(d),N_SPINS(f),S_FLIGHT::S(D)
    - K(e);N_SPINP(d),N_SPINS(f),S_FLIGHT::S(J)
  - Refutation
    - P(b);
- Try
  - R(G);CHECK,XS(f)
  - Vars
    - K(e);N_SPINP(d),S_FLIGHT::S(D)
    - K(e);N_SPINP(d),S_FLIGHT::S(J)
  - Refutation
    - P(g);XR(G)
- Try
  - P(I);
  - Vars
    - K(e);N_SPINP(d),N_SPINS(f),S_FLIGHT::S(D)
    - K(e);N_SPINP(d),N_SPINS(f),S_FLIGHT::S(J)
  - Refutation
    - K(e);N_SPINP(d),N_SPINS(f),S_FLIGHT
Actual
- R(G);
- Vars
  - K(e);N_SPINP(d),N_SPINS(f),S_FLIGHT::S(D)
  - K(e);N_SPINP(d),N_SPINS(f),S_FLIGHT::S(J)

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).