MESON Chess Problem Database
Problem Display
PID: 161158 (8/4Q3/3p3q/1K1k4/1Rn2p2/p2N4/b7/6B1 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Die Schwalbe, 1978
#2
5 + 7
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qg7
- 2.Sxf4#
- 1...Qh1
- 2.Sxf4#
- 1...Qh3
- 2.Sxf4#
- 1...Qh5
- 2.Sxf4#
- 1...Qe6
- 2.Qb7#
- 1...Qg6
- 2.Sxf4#
- 1...Qh7
- 2.Sxf4#
- 1...Qh8
- 2.Sxf4#
- 1...Sb2
- 2.Rd4#
- 2.Qe4#
- 1...Sd2
- 2.Rd4#
- 1...Se3
- 2.Qe4#
- 1...Sa5
- 2.Rd4#
- 2.Qe4#
- 1...Se5
- 2.Rd4#
- 1...Sb6
- 2.Rd4#
- 2.Qe4#
- 1...Qg7
- Tries
- 1.Rxc4?
- threat
- 2.Sb4#
- 2.Rd4#
- 2.Qe4#
- 1...Qg7
- 2.Sb4#
- 2.Sxf4#
- 2.Qe4#
- 1...Qh1
- 2.Sb4#
- 2.Sxf4#
- 2.Rd4#
- 2.Qf7#
- 1...Qe6
- 2.Rd4#
- 2.Qb7#
- 1...Qf6
- 2.Sb4#
- 2.Qe4#
- 1...Qg6
- 2.Sb4#
- 2.Sxf4#
- 2.Rd4#
- 1...Qh7
- 2.Sb4#
- 2.Sxf4#
- 2.Rd4#
- 1...Qh8
- 2.Sb4#
- 2.Sxf4#
- 2.Qe4#
- 2.Qf7#
- 1...Bxc4+!
- threat
- 1.Qf7+?
- 1...Qe6
- 2.Qb7#
- 1...Ke4!
- 1...Qe6
- 1.Rxc4?
- Keys
- 1.Ra4!
- threat
- 2.Sb4#
- 1...Qe6
- 2.Qb7#
- 1...Se3
- 2.Qe4#
- 1...Se5
- 2.Rd4#
- threat
- 1.Ra4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- Q(g);N_GUARD::S(B),XP(d)
- Q(g);SBLOCK::QAB(E)
- S(c);OGATE::R1(C)
- S(c);::QAB1(E)
- Tries
- Try
- R(C);XS(c)
- Threat
- DUALS(3)
- Refutation
- B(a);CHECK,XR(C)
- Try
- Q(E);CHECK
- Vars
- Q(g);P_SPINQ(g),SBLOCK::QAB(E)
- Refutation
- K(e);P_SPINS(c),S_FLIGHT
- Try
- Actual
- R(C);
- Threat
- S(B)
- Vars
- Q(g);SBLOCK::QAB(E)
- S(c);::QAB1(E)
- S(c);OGATE::R1(C)
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).