MESON Chess Problem Database
Problem Display
PID: 112944 (1N2R3/8/r2k3r/Bn6/b5Rq/2p1Q3/5n1b/K6B w - - 0 1)
Dombrovskis, Alfreds A
Magyar Sakkelet, 1957
#2
7 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qg3
- 2.Rd8#
- 2.Qe7#
- 1...Qe7
- 2.Qxe7#
- 1...Qd8
- 2.Rxd8#
- 1...Qh3
- 2.Rd8#
- 2.Qe7#
- 1...Qxg4
- 2.Qe7#
- 1...Qh5
- 2.Rd8#
- 2.Qe7#
- 1...Rxa5
- 2.Qb6#
- 1...Rb6
- 2.Qxb6#
- 1...Ra7
- 2.Qb6#
- 1...Ra8
- 2.Qb6#
- 1...Rh5
- 2.Re6#
- 1...Re6
- 2.Rxe6#
- 1...Rf6
- 2.Rd8#
- 2.Qe7#
- 1...Rh7
- 2.Re6#
- 1...Rh8
- 2.Re6#
- 1...Bg1
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Sa3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa7
- 2.Qd4#
- 1...Sc7
- 2.Bb4#
- 1...Qg3
- Tries
- 1.Rd4+?
- 1...Kc5
- 2.Sd7#
- 1...Qxd4
- 2.Qe7#
- 1...Sxd4!
- 1...Kc5
- 1.Rxh4?
- threat
- 2.Rxh6#
- 2.Rd8#
- 2.Qe7#
- 1...Rxa5
- 2.Qb6#
- 2.Qe7#
- 1...Rxh4
- 2.Re6#
- 2.Rd8#
- 2.Qe7#
- 1...Sxh1
- 2.Rd8#
- 1...Rb6
- 2.Qxb6#
- 2.Qe7#
- 1...Sd4
- 2.Qxd4#
- 2.Qe7#
- 1...Ra7
- 2.Rxh6#
- 2.Qb6#
- 1...Rh5
- 2.Re6#
- 2.Rd8#
- 2.Qe7#
- 1...Re6
- 2.Rxe6#
- 1...Rf6
- 2.Rd8#
- 2.Qe7#
- 1...Rg6
- 2.Rd8#
- 2.Qe7#
- 1...Rh7
- 2.Re6#
- 1...Rh8
- 2.Re6#
- 2.Qe7#
- 1...Bf4
- 2.Rd8#
- 2.Qe7#
- 1...Be5
- 2.Qxe5#
- 1...Bc2
- 2.Rd8#
- 2.Qe7#
- 1...Bb3
- 2.Rd8#
- 2.Qe7#
- 1...Sg4
- 2.Rd8#
- 2.Qe7#
- 1...Sa3
- 2.Rxh6#
- 2.Qd4#
- 2.Qe7#
- 1...Sa7
- 2.Rxh6#
- 2.Qd4#
- 2.Qe7#
- 1...Sc7
- 2.Bb4#
- 2.Qe7#
- 1...Se4!
- threat
- 1.Rg6+?
- 1...Qf6
- 2.Rd8#
- 2.Qe7#
- 1...Rxg6!
- 1...Qf6
- 1.Qf4+?
- 1...Kc5
- 2.Sd7#
- 2.Qb4#
- 1...Bxf4!
- 1...Kc5
- 1.Qd3+?
- 1...Kc5
- 2.Sd7#
- 2.Qd5#
- 1...Sd4
- 2.Qxd4#
- 1...Sxd3!
- 1...Kc5
- 1.Qe6+?
- 1...Kc5
- 2.Sxa6#
- 2.Sd7#
- 2.Bb4#
- 2.Qd5#
- 1...Rxe6!
- 1...Kc5
- 1.Rd4+?
- Keys
- 1.Rg7!
- threat
- 2.Rd7#
- 1...Qd4
- 2.Qe7#
- 1...Sd4
- 2.Bb4#
- 1...Qe7
- 2.Qxe7#
- 1...Qd8
- 2.Bb4#
- 2.Rxd8#
- 1...Qh3
- 2.Bb4#
- 2.Qe7#
- 1...Qg4
- 2.Qe7#
- 1...Ra7
- 2.Qb6#
- 1...Rh7
- 2.Re6#
- 1...Sa3
- 2.Bc7#
- 1...Sa7
- 2.Bc7#
- 1...Sc7
- 2.Bxc7#
- threat
- 1.Rg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(e);N_GUARD::QAB1(C),XQ(e)
- Q(e);N_GUARD::R(G),XQ(e)
- Q(e);N_GUARD,XR(D)::QAB1(C)
- R(g);N_GUARD,XB(E)::QAR2(C)
- R(g);N_GUARD::QAR2(C),XR(g)
- R(g);N_GUARD::QAR2(C)
- R(i);N_GUARD::R1(G)
- R(i);N_GUARD::R1(G),XR(i)
- B(b);N_GUARD::QAB1(C)
- B(b);N_GUARD::QAB1(C),XB(b)
- S(f);N_GUARD::QAR2(C)
- S(f);N_GUARD::QAR2(C),XS(f)
- S(f);SBLOCK::B(E)
- Tries
- Try
- R(D);CHECK
- Vars
- K(h);S_FLIGHT::S(F)
- Q(e);XR(D)::QAB1(C)
- Refutation
- S(f);XR(D)
- Try
- R(D);XQ(e)
- Threat
- DUALS(3)
- Vars
- S(a);XB(B)::R(G)
- R(i);N_GUARD::R1(G),XR(i)
- R(i);N_GUARD::R1(G)
- B(b);N_GUARD::QAB1(C),XB(b)
- Refutation
- S(a);
- Try
- R(D);CHECK
- Refutation
- R(i);XR(D)
- Try
- Q(C);CHECK
- Refutation
- B(b);XQ(C)
- Try
- Q(C);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAR2(C),XS(f)
- Refutation
- S(a);XQ(C)
- Try
- Q(C);CHECK
- Refutation
- R(i);XQ(C)
- Try
- Actual
- R(D);
- Threat
- R1(D)
- Vars
- Q(e);N_GUARD::QAB1(C)
- S(f);S_CUTQ(e)::B(E)
- Q(e);N_GUARD::QAB1(C),XQ(e)
- R(g);N_GUARD::QAR2(C)
- R(i);N_GUARD::R1(G)
- S(f);N_GUARD::B(E)
- S(f);N_GUARD::B(E),XS(f)
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).