MESON Chess Problem Database
Problem Display
PID: 28445 (4B3/4R2Q/3pp2r/K2k1p2/1R2N2n/3N3b/6p1/1n6 w - - 0 1)
Dombrovskis, Alfreds A
1st Prize, Vecherni Leningrad TT, 1976-1977
#2
7 + 9
| 133 | The Problemist Supplement | 2012 |
| 56 | The Problemist | 2014 |
| 23 | Die Schwalbe | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rh5
- 2.Sf6#
- 1...Rf6
- 2.Sxf6#
- 1...Rxh7
- 2.Sf6#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg6
- 2.Sf6#
- 1...fxe4
- 2.Qxe4#
- 1...Rh5
- Tries
- 1.Kb5?
- threat
- 2.Bc6#
- 1...Sc3+
- 2.Sxc3#
- 1...Sa3+!
- threat
- 1.Ra7?
- threat
- 2.Qb7#
- 1...Rxh7
- 2.Sf6#
- 1...e5!
- threat
- 1.Rd7?
- threat
- 2.Rxd6#
- 1...Kc6
- 2.Rxd6#
- 1...fxe4
- 2.Qxe4#
- 1...e5!
- threat
- 1.Qg6?
- threat
- 2.Sf6#
- 1...fxe4
- 2.Qxe4#
- 1...Rxg6!
- threat
- 1.Qxh6?
- threat
- 2.Sf6#
- 2.Qxe6#
- 1...Sg6
- 2.Sf6#
- 1...f4
- 2.Sf6#
- 1...e5
- 2.Sf6#
- 2.Qxd6#
- 2.Qe6#
- 1...fxe4!
- threat
- 1.Qg7?
- threat
- 2.Sf4#
- 2.Rd4#
- 2.Qd4#
- 1...fxe4
- 2.Rd4#
- 2.Qd4#
- 1...g1Q
- 2.Sf4#
- 1...g1B
- 2.Sf4#
- 1...Rf6
- 2.Sxf6#
- 1...Sf3
- 2.Sf4#
- 1...Sg6
- 2.Sf6#
- 2.Rd4#
- 2.Qd4#
- 1...f4
- 2.Sxf4#
- 2.Rd4#
- 2.Qd4#
- 1...e5!
- threat
- 1.Qh8?
- threat
- 2.Sf4#
- 2.Rd4#
- 2.Qd4#
- 1...Rxh8
- 2.Sf6#
- 1...fxe4
- 2.Rd4#
- 2.Qd4#
- 1...g1Q
- 2.Sf4#
- 1...g1B
- 2.Sf4#
- 1...Rf6
- 2.Sxf6#
- 1...Sf3
- 2.Sf4#
- 1...Sg6
- 2.Sf6#
- 2.Rd4#
- 2.Qd4#
- 1...f4
- 2.Sxf4#
- 2.Rd4#
- 2.Qd4#
- 1...e5!
- threat
- 1.Kb5?
- Keys
- 1.Rxe6!
- threat
- 2.Sf4#
- 1...Kxe6
- 2.Qf7#
- 1...Rxe6
- 2.Qb7#
- 1...fxe4
- 2.Qxe4#
- 1...Sg6
- 2.Rxd6#
- 1...f4
- 2.Sxf4#
- threat
- 1.Rxe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- R(i);N_GUARD::S(C)
- R(i);N_GUARD::S(C),XR(i)
- R(i);N_GUARD,XQ(F)::S(C)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(d);S_CUTR(i)::S(C)
- P(f);OGATE,XS(C)::QAB1(F),XP(f)
- Tries
- Try
- K(D);P-FLIGHT
- Threat
- B(G)
- Vars
- S(a);CHECK,N_GUARD::S(C),XS(a)
- Refutation
- S(a);CHECK
- Try
- R(E);
- Threat
- QAB(F)
- Vars
- R(i);N_GUARD,XQ(F)::S(C)
- Refutation
- P(h);
- Try
- R(E);P_PINP(g)
- Threat
- R1(E),XP(g)
- Vars
- K(e);N_SPINP(g),S_FLIGHT::B(G)+R(E),DCHECK,XP(g)
- P(f);OGATE,XS(C)::QAB1(F),XP(f)
- Refutation
- P(h);
- Try
- Q(F);
- Threat
- S(C)
- Vars
- P(f);OGATE,XS(C)::QAB1(F),XP(f)
- Refutation
- R(i);XQ(F)
- Try
- Q(F);XR(i)
- Threat
- DUALS(2)
- Vars
- S(d);::S(C)
- P(f);::S(C)
- Refutation
- P(f);XS(C)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- P(b);::S(A)
- R(i);N_GUARD::S(C),XR(i)
- S(d);::S(A)
- Refutation
- P(h);
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- R(i);N_GUARD,XQ(F)::S(C)
- P(b);::S(A)
- R(i);N_GUARD::S(C),XR(i)
- S(d);::S(A)
- Refutation
- P(h);
- Try
- Actual
- R(E);XP(h)
- Threat
- S(A)
- Vars
- K(e);OGATEB,S_FLIGHT,XR(E)::QAB1(F)
- R(i);SBLOCK,XR(E)::QAB(F)
- P(f);OGATE,XS(C)::QAB1(F),XP(f)
- S(d);S_CUTR(i)::R1(E),XP(g)
- P(f);::S(A),XP(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).