MESON Chess Problem Database
Problem Display
PID: 90047 (8/1b1p4/2rq4/3Q3p/5k2/2N2NR1/3K2R1/1B4n1 w - - 0 1)
Reddmann, Hauke
Die Schwalbe, 1999
#2
7 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa3
- 2.Qe4#
- 2.Qd4#
- 2.Qe5#
- 2.Qf5#
- 2.Qg5#
- 1...Qb4
- 2.Qe5#
- 2.Qf5#
- 2.Qg5#
- 1...Qc5
- 2.Qe4#
- 1...Qe5
- 2.Qxe5#
- 1...Qc7
- 2.Qe4#
- 2.Qd4#
- 2.Qf5#
- 2.Qg5#
- 1...Qe7
- 2.Qf5#
- 1...Qb8
- 2.Qe4#
- 2.Qd4#
- 2.Qf5#
- 2.Qg5#
- 1...Qf8
- 2.Qe4#
- 2.Qd4#
- 2.Qe5#
- 2.Qg5#
- 1...Qxd5+
- 2.Sxd5#
- 1...Qe6
- 2.Qg5#
- 1...Qf6
- 2.Qe4#
- 1...Qg6
- 2.Qe5#
- 1...Qh6
- 2.Qe4#
- 2.Qd4#
- 2.Qe5#
- 2.Qf5#
- 1...Rxc3
- 2.Qxd6#
- 1...Rc4
- 2.Qxd6#
- 1...Rc7
- 2.Qxd6#
- 1...Rc8
- 2.Qxd6#
- 1...Se2
- 2.Sxe2#
- 1...Sxf3+
- 2.Rxf3#
- 1...Sh3
- 2.Se2#
- 1...h4
- 2.Rg4#
- 1...Qa3
- Tries
- 1.Sxg1?
- threat
- 2.Sge2#
- 2.Sh3#
- 2.Sce2#
- 2.Rf3#
- 1...Rxc3
- 2.Se2#
- 2.Sh3#
- 2.Qxd6#
- 1...Qb4
- 2.Se2#
- 2.Sh3#
- 2.Rf3#
- 2.Qf5#
- 2.Qg5#
- 1...Qe5
- 2.Sh3#
- 2.Rf3#
- 2.Qf3#
- 1...Qe7
- 2.Sh3#
- 2.Rf3#
- 2.Qf5#
- 1...Qe6
- 2.Rf3#
- 2.Qg5#
- 1...Ba6
- 2.Sh3#
- 2.Rf3#
- 1...Qxd5+!
- threat
- 1.Bd3?
- threat
- 2.Qe4#
- 2.Qf5#
- 2.Qg5#
- 1...Sxf3+
- 2.Rxf3#
- 1...Qxd5
- 2.Sxd5#
- 1...Rxc3
- 2.Qf5#
- 2.Qg5#
- 2.Qxd6#
- 1...Qe5
- 2.Qxe5#
- 1...Qb4
- 2.Qe5#
- 2.Qf5#
- 2.Qg5#
- 1...Qc5
- 2.Qe4#
- 1...Qe7
- 2.Qf5#
- 1...Qf8
- 2.Qe4#
- 2.Qd4#
- 2.Qe5#
- 2.Qg5#
- 1...Qe6
- 2.Qg5#
- 1...Qf6
- 2.Qe4#
- 1...Qg6
- 2.Qe5#
- 1...Qh6
- 2.Qe4#
- 2.Qd4#
- 2.Qe5#
- 2.Qf5#
- 1...Rc4
- 2.Qf5#
- 2.Qg5#
- 2.Qxd6#
- 1...Ra6
- 2.Qf5#
- 2.Qg5#
- 1...Rb6
- 2.Qf5#
- 2.Qg5#
- 1...Rc7
- 2.Qf5#
- 2.Qg5#
- 2.Qxd6#
- 1...Rc8
- 2.Qf5#
- 2.Qg5#
- 2.Qxd6#
- 1...Sh3
- 2.Se2#
- 2.Qe4#
- 2.Qf5#
- 1...Rc5!
- threat
- 1.Rxg1?
- threat
- 2.Se2#
- 1...Qxd5+
- 2.Sxd5#
- 1...Rxc3
- 2.Qxd6#
- 1...Qe5
- 2.Qxe5#
- 1...Qb4
- 2.Qe5#
- 2.Qf5#
- 2.Qg5#
- 1...Qe7
- 2.Qf5#
- 1...Qe6
- 2.Qg5#
- 1...Ba6!
- threat
- 1.Sxg1?
- Keys
- 1.Rh3!
- threat
- 2.Rh4#
- 1...Qxd5+
- 2.Sxd5#
- 1...Sxf3+
- 2.Rxf3#
- 1...Sxh3
- 2.Se2#
- 1...Qe7
- 2.Qf5#
- 1...Qe6
- 2.Qg5#
- 1...Qf6
- 2.Qe4#
- 1...Qg6
- 2.Qe5#
- 1...h4
- 2.Rxh4#
- threat
- 1.Rh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(e);N_PINQ(G)::QAR1(G)
- Q(e);N_PINQ(G)::QAB1(G),XQ(e)
- Q(e);CHECK,XQ(G)::S(D),XQ(e)
- Q(e);N_PINQ(G)::QAB1(G)
- R(d);N_GUARD,XS(D)::QAB(G),XQ(e)
- R(d);N_GUARD::QAB(G),XQ(e)
- S(a);N_GUARD::S(D),XS(a)
- S(a);CHECK,OGATE,XS(E)::R1(F),XS(a)
- S(a);N_GUARD::S(D)
- P(c);N_GUARD::R1(F)
- Tries
- Try
- S(E);XS(a)
- Threat
- DUALS(4)
- Refutation
- Q(e);CHECK,XQ(G)
- Try
- B(A);N_SPINQ(G)
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,OGATE,XS(E)::R1(F),XS(a)
- Q(e);P_PINB(A),XQ(G)::S(D),XQ(e)
- Q(e);N_GUARD::QAB1(G),XQ(e)
- Q(e);::QAR1(G)
- Q(e);::QAB1(G)
- Q(e);N_GUARD::QAB1(G)
- Refutation
- R(d);
- Try
- R(C);XS(a)
- Threat
- S(D)
- Vars
- Q(e);CHECK,XQ(G)::S(D),XQ(e)
- R(d);N_GUARD,XS(D)::QAB(G),XQ(e)
- Q(e);N_PINQ(G)::QAB1(G),XQ(e)
- Q(e);N_PINQ(G)::QAR1(G)
- Q(e);N_PINQ(G)::QAB1(G)
- Refutation
- B(f);
- Try
- Actual
- R(F);
- Threat
- R(F)
- Vars
- Q(e);CHECK,XQ(G)::S(D),XQ(e)
- S(a);CHECK,OGATE,XS(E)::R1(F),XS(a)
- S(a);N_GUARD,XR(F)::S(D)
- Q(e);N_PINQ(G)::QAR1(G)
- Q(e);N_PINQ(G)::QAB1(G)
- P(c);::R(F),XP(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).