MESON Chess Problem Database
Problem Display
PID: 204406 (4Nr2/2b1RpR1/3P4/q4k1p/PpQ5/1P4B1/3p1r2/1b1K4 w - - 0 1)
Ullrich, Ewald
Chemnitzer Tageblatt, 1925
#2
9 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qb6
- 2.Re5#
- 2.Qd5#
- 1...Qxa4
- 2.Re5#
- 2.Qd5#
- 2.Qc5#
- 1...Qb5
- 2.Qxb5#
- 1...Qc5
- 2.Qxc5#
- 1...Qd5
- 2.Qxd5#
- 1...Qe5
- 2.Rxe5#
- 1...Qa6
- 2.Re5#
- 2.Qd5#
- 2.Qc5#
- 1...Qa7
- 2.Re5#
- 2.Qd5#
- 1...Qa8
- 2.Re5#
- 1...Rf1+
- 2.Qxf1#
- 1...Re2
- 2.Qf4#
- 1...Rg2
- 2.Qf4#
- 1...Rh2
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rxe8
- 2.Rexf7#
- 2.Qxf7#
- 1...Rg8
- 2.Rexf7#
- 2.Qxf7#
- 1...Rh8
- 2.Rexf7#
- 2.Qxf7#
- 1...Ba2
- 2.Qd3#
- 2.Qc2#
- 2.Qe4#
- 1...Bc2+
- 2.Qxc2#
- 1...Bd3
- 2.Qxd3#
- 1...Be4
- 2.Qxe4#
- 1...Bb6
- 2.Qc8#
- 1...Bxd6
- 2.Qc8#
- 1...Bb8
- 2.Qc8#
- 1...Bd8
- 2.Qc8#
- 1...h4
- 2.Qg4#
- 1...f6
- 2.Qe6#
- 1...Qb6
- Tries
- 1.dxc7?
- threat
- 2.c8Q#
- 2.c8B#
- 1...Rf1+
- 2.Qxf1#
- 1...Bc2+
- 2.Qxc2#
- 1...Qxa4
- 2.Re5#
- 2.Qd5#
- 2.Qc5#
- 1...Rxe8
- 2.Rexf7#
- 2.Qxf7#
- 1...Rf3
- 2.c8Q#
- 2.c8B#
- 1...Qb6
- 2.Re5#
- 2.Qd5#
- 1...Qb5
- 2.Qxb5#
- 1...Qc5
- 2.Qxc5#
- 1...Qd5
- 2.Qxd5#
- 1...Qe5
- 2.Rxe5#
- 1...Qa6
- 2.Re5#
- 2.Qd5#
- 2.Qc5#
- 1...Qa7
- 2.Re5#
- 2.Qd5#
- 1...Qa8
- 2.Re5#
- 1...Re2
- 2.Qf4#
- 1...Rg2
- 2.Qf4#
- 2.c8Q#
- 2.c8B#
- 1...Rh2
- 2.Qf4#
- 2.c8Q#
- 2.c8B#
- 1...Rf4
- 2.Qxf4#
- 2.c8Q#
- 2.c8B#
- 1...Rg8
- 2.Rexf7#
- 2.Qxf7#
- 2.c8Q#
- 2.c8B#
- 1...Rh8
- 2.Rexf7#
- 2.Qxf7#
- 2.c8Q#
- 2.c8B#
- 1...Ba2
- 2.Qd3#
- 2.Qc2#
- 2.Qe4#
- 2.c8Q#
- 2.c8B#
- 1...Bd3
- 2.Qxd3#
- 2.c8Q#
- 2.c8B#
- 1...Be4
- 2.Qxe4#
- 2.c8Q#
- 2.c8B#
- 1...h4
- 2.Qg4#
- 2.c8Q#
- 2.c8B#
- 1...f6
- 2.Sd6#
- 2.Qe6#
- 2.c8Q#
- 2.c8B#
- 1...Qxc7!
- threat
- 1.dxc7?
- Keys
- 1.Re3!
- 1...Rf1+
- 2.Qxf1#
- 1...Bc2+
- 2.Qxc2#
- 1...Qxa4
- 2.Re5#
- 2.Qd5#
- 2.Qc5#
- 1...Rxe8
- 2.Qxf7#
- 1...Bxd6
- 2.Qc8#
- 1...Qb6
- 2.Re5#
- 2.Qd5#
- 1...Qb5
- 2.Qxb5#
- 1...Qc5
- 2.Qxc5#
- 1...Qd5
- 2.Qxd5#
- 1...Qe5
- 2.Rxe5#
- 1...Qa6
- 2.Re5#
- 2.Qd5#
- 2.Qc5#
- 1...Qa7
- 2.Re5#
- 2.Qd5#
- 1...Qa8
- 2.Re5#
- 1...Re2
- 2.Rf3#
- 2.Qf4#
- 1...Rg2
- 2.Rf3#
- 2.Qf4#
- 1...Rh2
- 2.Rf3#
- 2.Qf4#
- 1...Rf3
- 2.Rxf3#
- 1...Rf4
- 2.Qxf4#
- 1...Rg8
- 2.Qxf7#
- 1...Rh8
- 2.Qxf7#
- 1...Ba2
- 2.Qd3#
- 2.Qc2#
- 2.Qe4#
- 1...Bd3
- 2.Qxd3#
- 1...Be4
- 2.Qxe4#
- 1...Bb6
- 2.Qc8#
- 1...Bb8
- 2.Qc8#
- 1...Bd8
- 2.Qc8#
- 1...h4
- 2.Qg4#
- 1...f6
- 2.Qe6#
- 1...Rf1+
- 1.Re3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- Q(e);N_GUARD::QAR(E),XQ(e)
- Q(e);N_GUARD::QAR2(E),XQ(e)
- Q(e);N_GUARD::R1(G),XQ(e)
- Q(e);N_GUARD::R1(G)
- R(c);CHECK,OGATEB::QAR(E),XR(c)
- R(c);N_GUARD::QAR1(E)
- R(c);N_GUARD::QAR1(E),XR(c)
- B(a);CHECK,N_GUARD::QAB(E),XB(a)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);N_GUARD::QAB1(E),XB(a)
- B(h);OGATE::QAB(E)
- B(h);OGATE,XP(F)::QAB(E)
- P(g);N_GUARD::QAB1(E)
- P(i);N_GUARD::QAB1(E)
- Tries
- Try
- P(F);XB(h)
- Threat
- P=Q
- Vars
- R(c);CHECK,OGATEB::QAR(E),XR(c)
- B(a);CHECK,N_GUARD::QAB(E),XB(a)
- R(c);::P=Q
- Q(e);N_GUARD::QAR(E),XQ(e)
- Q(e);N_GUARD::QAR2(E),XQ(e)
- Q(e);N_GUARD::R1(G),XQ(e)
- Q(e);N_GUARD::R1(G)
- R(c);N_GUARD::QAR1(E)
- Refutation
- Q(e);XP(F)
- Try
- Actual
- R(G);
- Vars
- R(c);CHECK,OGATEB::QAR(E),XR(c)
- B(a);CHECK,N_GUARD::QAB(E),XB(a)
- R(j);N_GUARD,XS(I)::QAR2(E),XP(i)
- B(h);OGATE,XP(F)::QAB(E)
- Q(e);N_GUARD::QAR(E),XQ(e)
- Q(e);N_GUARD::QAR2(E),XQ(e)
- Q(e);N_GUARD::R1(G),XQ(e)
- Q(e);N_GUARD::R1(G)
- R(c);N_GUARD::R(G),XR(c)
- R(c);N_GUARD::QAR1(E),XR(c)
- R(j);N_GUARD::QAR2(E),XP(i)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);N_GUARD::QAB1(E),XB(a)
- B(h);OGATE::QAB(E)
- P(g);N_GUARD::QAB1(E)
- P(i);N_GUARD::QAB1(E)
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).