MESON Chess Problem Database
Problem Display
PID: 174189 (1Q2b3/4R3/2r2kp1/2p3p1/7N/8/rb2R1K1/8 w - - 0 1)
Buchner, Richard
1st Prize, Volkswacht, 1927
#2
5 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxb2#
- 1...Ra5
- 2.Qxb2#
- 1...Raa6
- 2.Qxb2#
- 1...Ra7
- 2.Qxb2#
- 1...Ra8
- 2.Qxb2#
- 1...Rd6
- 2.Qxd6#
- 1...Re6
- 2.R2xe6#
- 1...Rc7
- 2.R2e6#
- 1...Rc8
- 2.R2e6#
- 2.Qd6#
- 1...Bc1
- 2.Qe5#
- 1...Ba3
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Bd7
- 2.Qf8#
- 2.Qh8#
- 1...Bf7
- 2.Qh8#
- 1...gxh4
- 2.Qf4#
- 1...g4
- 2.Qf4#
- 1...Ra1
- Tries
- 1.Rf7+?
- 1...Bxf7
- 2.Qh8#
- 1...Kxf7!
- 1...Bxf7
- 1.Rh7?
- threat
- 2.Qd8#
- 1...gxh4
- 2.Qf4#
- 1...Be5
- 2.Qxe5#
- 1...Ra7
- 2.Qxb2#
- 1...Ra8
- 2.Qxb2#
- 1...Rd6
- 2.Qxd6#
- 1...Re6
- 2.Rf2#
- 1...Rc8
- 2.Qd6#
- 1...Rc7!
- threat
- 1.Qxe8?
- threat
- 2.Rf2#
- 2.Rf7#
- 2.Qxc6#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...g4
- 2.Qxg6#
- 1...Ra3
- 2.Rf7#
- 2.Qxc6#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Ra4
- 2.Rf7#
- 2.Qxc6#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Raa6
- 2.Rf2#
- 2.Rf7#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Ra7
- 2.Rf2#
- 2.Qxc6#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Ra8
- 2.Rf2#
- 2.Rf7#
- 2.Qxc6#
- 2.Qxg6#
- 2.Qf7#
- 1...Rca6
- 2.Rf2#
- 2.Rf7#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Rb6
- 2.Rf2#
- 2.Rf7#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Rd6
- 2.Rf2#
- 2.Rf7#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Re6
- 2.R2xe6#
- 2.Rf7#
- 2.Qf7#
- 2.Qf8#
- 1...Rc7
- 2.Rf2#
- 2.R2e6#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Rc8
- 2.Rf2#
- 2.R2e6#
- 2.Rf7#
- 2.Qxg6#
- 2.Qf7#
- 1...Ba1
- 2.Rf7#
- 2.Qxc6#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Bc1
- 2.Rf7#
- 2.Qxc6#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Ba3
- 2.Rf7#
- 2.Qxc6#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Bc3
- 2.Rf7#
- 2.Qxc6#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Bd4
- 2.Rf7#
- 2.Qxc6#
- 2.Qxg6#
- 2.Qf7#
- 2.Qf8#
- 2.Qh8#
- 1...Be5
- 2.Rf7#
- 2.Qf7#
- 2.Qf8#
- 1...gxh4!
- threat
- 1.Rf7+?
- Keys
- 1.Rd7!
- threat
- 2.Qd8#
- 1...Bxd7
- 2.Qf8#
- 1...gxh4
- 2.Qf4#
- 1...Be5
- 2.Qxe5#
- 1...Bf7
- 2.Qh8#
- 1...Ra8
- 2.Qxb2#
- 1...Re6
- 2.Rf2#
- 1...Rc8
- 2.Qd6#
- threat
- 1.Rd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- R(a);N_GUARD::QAB(E),XB(b)
- R(e);N_GUARD::QAR2(E),XR(e)
- R(e);N_GUARD::R1(A),XR(e)
- R(e);N_GUARD::R1(A)
- B(b);N_GUARD,P_PINR(A)::QAB1(E)
- B(b);N_GUARD,P_PINR(A)::QAB1(E),XB(b)
- B(h);OGATE::QAB(E)
- P(d);N_GUARD,XS(C)::QAR2(E)
- P(d);N_GUARD::QAR2(E)
- Tries
- Try
- R(D);CHECK
- Vars
- B(h);OGATE,SBLOCK,XR(D)::QAB(E)
- Refutation
- K(f);P-FLIGHT,XR(D)
- Try
- R(D);
- Threat
- QAB(E)
- Vars
- P(d);N_GUARD,XS(C)::QAR2(E)
- B(b);N_GUARD,P_PINR(A)::QAB1(E),XB(b)
- R(a);N_GUARD::QAB(E),XB(b)
- R(e);N_GUARD::QAR2(E),XR(e)
- R(e);SBLOCK::R(A)
- R(e);N_GUARD::QAR2(E)
- Refutation
- R(e);
- Try
- Q(E);XB(h)
- Threat
- DUALS(7)
- Vars
- P(d);::QAR1(E),XP(g)
- Refutation
- P(d);XS(C)
- Try
- Actual
- R(D);
- Threat
- QAB(E)
- Vars
- B(h);OGATE,XR(D)::QAR2(E)
- P(d);N_GUARD,XS(C)::QAR2(E)
- B(b);N_GUARD,P_PINR(A)::QAB1(E),XB(b)
- B(h);OGATE::QAB(E)
- R(a);N_GUARD::QAB(E),XB(b)
- R(e);SBLOCK::R(A)
- R(e);N_GUARD::QAR2(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).