MESON Chess Problem Database
Problem Display
PID: 232641 (B5r1/5q1p/2R2nRr/1P1kPN1p/1P3K2/3p1P2/1n3BQ1/8 w - - 0 1)
Hoffmann, Fritz
Freie Presse, 1974
#2
11 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Rc5#
- 1...Qxg6
- 2.Se7#
- 1...Qe7
- 2.Sxe7#
- 1...Sc4
- 2.Rd6#
- 1...Se4
- 2.Rc5#
- 2.fxe4#
- 1...Sg4
- 2.Rc5#
- 2.fxg4#
- 1...Sd7
- 2.Rc5#
- 2.Rc8#
- 1...Se8
- 2.Rc5#
- 2.Rc7#
- 1...Qe6
- Tries
- 1.Ba7?
- threat
- 2.Se3#
- 1...Sd1
- 2.Qa2#
- 1...Sc4
- 2.Rd6#
- 1...Se4
- 2.Rc5#
- 2.fxe4#
- 1...Sg4
- 2.Rc5#
- 2.fxg4#
- 1...Sd7
- 2.Rc5#
- 2.Rc8#
- 1...Se8
- 2.Rc5#
- 2.Rc7#
- 1...Qxa7!
- threat
- 1.Rc7+?
- 1...Ke6
- 2.Sd4#
- 1...Rxa8!
- 1...Ke6
- 1.Ba7?
- Keys
- 1.Bb6!
- threat
- 2.Se3#
- 1...Sd1
- 2.Qa2#
- 1...Sc4
- 2.Rd6#
- 1...Se4
- 2.Rc5#
- 2.fxe4#
- 1...Sg4
- 2.Rc5#
- 2.fxg4#
- 1...Sd7
- 2.Rc5#
- 2.Rc8#
- 1...Se8
- 2.Rc5#
- 2.Rc7#
- threat
- 1.Bb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(g);SBLOCK::B(K)+R(I),DCHECK
- Q(g);N_GUARD,XR(J)::S(H)
- Q(g);N_GUARD::S(H),XQ(g)
- S(a);SBLOCK::B(K)+R(I),DCHECK
- Tries
- Try
- B(A);
- Threat
- S(H)
- Vars
- S(a);OGATE::QAB(B)
- S(a);SBLOCK::B(K)+R(I),DCHECK
- Refutation
- Q(g);XB(A)
- Try
- R(I);CHECK
- Vars
- K(c);P_SPINS(e),S_FLIGHT::S(H)
- Refutation
- R(i);XB(K)
- Try
- Actual
- B(A);
- Threat
- S(H)
- Vars
- S(a);OGATE::QAB(B)
- S(a);SBLOCK::B(K)+R(I),DCHECK
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).