MESON Chess Problem Database
Problem Display
PID: 9666 (4B2n/3R1qQ1/2k2r2/3R4/P7/2p1BP2/4K3/8 w - - 0 1)
von Wardener, Friedrich Freiherr
Viareggio Ty., 1907
#2
8 + 5
| 3360 | Simple Two-move Themes | 1924 |
| 5501 | Chess Cameos | 1936 |
| 461 | Schach-Express | 1948 |
| 136 | Problem Observer | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qh5
- 2.R7d6#
- 2.Qxf6#
- 1...Qe6
- 2.R7d6#
- 1...Qg6
- 2.R7d6#
- 1...Qg8
- 2.R7d6#
- 1...Qxd7
- 2.Qxd7#
- 1...Qf8
- 2.R7d6#
- 1...Rxf3
- 2.R5d6#
- 2.Qxc3#
- 1...Rf4
- 2.R5d6#
- 1...Rf5
- 2.R5d6#
- 2.Qxc3#
- 1...Rd6
- 2.R5xd6#
- 1...Re6
- 2.Qxc3#
- 1...Rg6
- 2.Qxc3#
- 1...Rh6
- 2.Qxc3#
- 1...Qh5
- Tries
- 1.Bxf7?
- threat
- 2.Qxf6#
- 1...Rxf3
- 2.R5d6#
- 2.Qxc3#
- 1...Rxf7
- 2.R5d6#
- 2.Qxc3#
- 1...Rd6
- 2.R5xd6#
- 1...Rf4
- 2.R5d6#
- 1...Rf5
- 2.R5d6#
- 2.Qxc3#
- 1...Re6
- 2.Qxc3#
- 1...Rg6
- 2.Qxc3#
- 1...Rh6
- 2.Qxc3#
- 1...Sxf7!
- threat
- 1.Rd2?
- threat
- 2.Rxf7#
- 1...Qc4+
- 2.R7d3#
- 1...Qxe8
- 2.Rc7#
- 1...Qxd7
- 2.Qxd7#
- 1...Qxg7
- 2.Re7#
- 2.Rf7#
- 2.Rxg7#
- 1...Qa2
- 2.Rd3#
- 2.Rd5#
- 2.Rd6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rd8#
- 1...Qb3
- 2.R7d3#
- 2.R7d5#
- 2.R7d6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rd8#
- 1...Qd5
- 2.R7xd5#
- 1...Qh5
- 2.R7d6#
- 2.Rc7#
- 2.Rf7#
- 2.Qxf6#
- 1...Qe6
- 2.R7d6#
- 2.Rc7#
- 1...Qg6
- 2.R7d6#
- 2.Rc7#
- 2.Rf7#
- 1...Qg8
- 2.R7d6#
- 2.Rc7#
- 1...Qe7
- 2.Rxe7#
- 1...Qf8
- 2.R7d6#
- 2.Rc7#
- 1...Rd6
- 2.R2xd6#
- 1...Re6
- 2.Qxc3#
- 1...cxd2!
- threat
- 1.Rd3?
- threat
- 2.Rxf7#
- 1...Qxe8
- 2.Rxc3#
- 2.Rc7#
- 1...Qxd7
- 2.Qxd7#
- 1...Qxg7
- 2.Rxc3#
- 2.Re7#
- 2.Rf7#
- 2.Rxg7#
- 1...Qb3
- 2.R7d5#
- 2.R7d6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rd8#
- 1...Qc4
- 2.Rd5#
- 2.Rd6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rd8#
- 1...Qd5
- 2.R7xd5#
- 1...Qh5
- 2.R7d6#
- 2.Rc7#
- 2.Rf7#
- 2.Qxf6#
- 1...Qe6
- 2.R7d6#
- 2.Rc7#
- 1...Qg6
- 2.Rxc3#
- 2.R7d6#
- 2.Rc7#
- 2.Rf7#
- 1...Qg8
- 2.R7d6#
- 2.Rc7#
- 1...Qe7
- 2.Rxe7#
- 1...Qf8
- 2.R7d6#
- 2.Rc7#
- 1...Rd6
- 2.R3xd6#
- 1...Re6
- 2.Rxc3#
- 2.Qxc3#
- 1...Qa2+!
- threat
- 1.Ra5?
- threat
- 2.Ra6#
- 1...Qa2+
- 2.Rd2#
- 1...Qc4+
- 2.Rd3#
- 1...Qxd7
- 2.Qxd7#
- 1...Qb3
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rdd5#
- 2.Rd8#
- 1...Rd6!
- threat
- 1.Rb5?
- threat
- 2.Rb6#
- 1...Qa2+
- 2.Rd2#
- 1...Qc4+
- 2.Rd3#
- 1...Qxd7
- 2.Qxd7#
- 1...Qb3
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rdd5#
- 2.Rd8#
- 1...Rd6!
- threat
- 1.Ra7+?
- 1...Qxe8
- 2.Qb7#
- 1...Qd7
- 2.Qxd7#
- 1...Kxd5!
- 1...Qxe8
- 1.Qxf6+?
- 1...Qe6
- 2.Qxc3#
- 2.Qxe6#
- 1...Qxf6!
- 1...Qe6
- 1.Qg3?
- threat
- 2.Qc7#
- 1...Rd6
- 2.R5xd6#
- 2.Qxd6#
- 1...Rf4
- 2.R5d6#
- 1...Qxd7!
- threat
- 1.Qxf7?
- threat
- 2.R7d6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rd8#
- 2.Qxf6#
- 1...Rxf3
- 2.R5d6#
- 2.R7d6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rd8#
- 2.Qe6#
- 1...Rxf7
- 2.R5d6#
- 1...Rd6
- 2.R5xd6#
- 2.R7xd6#
- 2.Rc7#
- 1...Rf4
- 2.R5d6#
- 2.R7d6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rd8#
- 2.Qe6#
- 1...Rf5
- 2.R5d6#
- 2.R7d6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rd8#
- 2.Qe6#
- 1...Re6
- 2.R7d6#
- 2.Qxe6#
- 1...Rg6
- 2.R7d6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rd8#
- 1...Rh6
- 2.R7d6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rd8#
- 1...Sxf7!
- threat
- 1.Bxf7?
- Keys
- 1.Rd1!
- threat
- 2.Rxf7#
- 1...Qa2+
- 2.R7d2#
- 1...Qc4+
- 2.R7d3#
- 1...Qxe8
- 2.Rc7#
- 1...Qxd7
- 2.Qxd7#
- 1...Qxg7
- 2.Re7#
- 2.Rf7#
- 2.Rxg7#
- 1...Qb3
- 2.R7d2#
- 2.R7d3#
- 2.R7d5#
- 2.R7d6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Re7#
- 2.Rf7#
- 2.Rd8#
- 1...Qd5
- 2.R7xd5#
- 1...Qh5
- 2.R7d6#
- 2.Rc7#
- 2.Rf7#
- 2.Qxf6#
- 1...Qe6
- 2.R7d6#
- 2.Rc7#
- 1...Qg6
- 2.R7d6#
- 2.Rc7#
- 2.Rf7#
- 1...Qg8
- 2.R7d6#
- 2.Rc7#
- 1...Qe7
- 2.Rxe7#
- 1...Qf8
- 2.R7d6#
- 2.Rc7#
- 1...Rd6
- 2.R1xd6#
- 1...Re6
- 2.Qxc3#
- threat
- 1.Rd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- Q(d);P_PINB(B)::B(H)+R(F),DCHECK
- Q(d);::B(H)+R(F),DCHECK
- Q(d);OGATE,P_SPINQ(d),XR(F)::QAB1(G),XQ(d)
- R(c);N_GUARD::R1(E)
- R(c);N_GUARD::R1(E),XR(c)
- R(c);OGATE,P_PINB(B)::QAR(G),XP(a)
- R(c);OGATE::QAR(G),XP(a)
- Tries
- Try
- B(H);XQ(d)
- Threat
- QAR(G),XR(c)
- Vars
- R(c);N_GUARD::R1(E),XR(c)
- R(c);N_GUARD::R1(E)
- R(c);OGATE,P_PINB(B)::QAR(G),XP(a)
- R(c);OGATE::QAR(G),XP(a)
- Refutation
- S(e);XB(H)
- Try
- R(E);
- Threat
- B(H)+R(F),XQ(d)
- Vars
- Q(d);CHECK,N_GUARD::B(H)+R(F)
- Q(d);P_PINB(B),XB(H)::R1(F)
- Q(d);OGATE,P_SPINQ(d),XR(F)::QAB1(G),XQ(d)
- Q(d);N_GUARD::B(H)+R(F),XQ(d)
- Q(d);N_GUARD,P_PINB(B)::B(H)+R(F),XQ(d)
- R(c);N_GUARD::R1(E),XR(c)
- R(c);OGATE,P_PINB(B)::QAR(G),XP(a)
- Refutation
- P(a);XR(E)
- Try
- R(E);
- Threat
- B(H)+R(F),XQ(d)
- Vars
- Q(d);OGATE,P_SPINQ(d),XR(F)::QAB1(G),XQ(d)
- Q(d);N_GUARD::B(H)+R(F),XQ(d)
- Q(d);N_GUARD,P_PINB(B)::B(H)+R(F),XQ(d)
- R(c);N_GUARD::R1(E),XR(c)
- Refutation
- Q(d);CHECK
- Try
- R(E);
- Threat
- R(E)
- Vars
- Q(d);CHECK,N_GUARD::B(H)+R(F)
- Q(d);OGATE,P_SPINQ(d),XR(F)::QAB1(G),XQ(d)
- Refutation
- R(c);
- Try
- R(E);
- Threat
- R1(E)
- Vars
- Q(d);CHECK,N_GUARD::B(H)+R(F)
- Q(d);OGATE,P_SPINQ(d),XR(F)::QAB1(G),XQ(d)
- Refutation
- R(c);
- Try
- R(F);CHECK
- Vars
- Q(d);OGATE,P_PINB(B),XB(H)::QAB1(G)
- Q(d);OGATE,P_SPINQ(d)::QAB1(G),XQ(d)
- Refutation
- K(b);S_FLIGHT,XR(E)
- Try
- Q(G);CHECK,XR(c)
- Refutation
- Q(d);XQ(G)
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- R(c);N_GUARD::R1(E)
- Refutation
- Q(d);P_SPINQ(d),XR(F)
- Try
- Q(G);XQ(d)
- Threat
- DUALS(7)
- Vars
- R(c);N_GUARD,XQ(G)::R1(E)
- Refutation
- S(e);XQ(G)
- Try
- Actual
- R(E);
- Threat
- B(H)+R(F),XQ(d)
- Vars
- Q(d);CHECK,N_GUARD::B(H)+R(F)
- Q(d);P_PINB(B),XB(H)::R1(F)
- Q(d);OGATE,P_SPINQ(d),XR(F)::QAB1(G),XQ(d)
- Q(d);N_GUARD::B(H)+R(F),XQ(d)
- Q(d);N_GUARD,P_PINB(B)::B(H)+R(F),XQ(d)
- R(c);N_GUARD::R1(E),XR(c)
- R(c);OGATE,P_PINB(B)::QAR(G),XP(a)
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).