MESON Chess Problem Database
Problem Display
PID: 98546 (8/4BQNb/R6r/2Nppp1B/q1pk3p/4p2K/1P6/6R1 w - - 0 1)
Petkov, Petko Andonov
Problemas, 1969
#2
9 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Rxd1#
- 1...Qb5
- 2.Rd1#
- 1...Qc6
- 2.Rd1#
- 1...Qd7
- 2.Rd1#
- 1...Qe8
- 2.Rd1#
- 1...Qa2
- 2.Rd1#
- 1...Qxa6
- 2.Rd1#
- 1...Rxh5
- 2.Sge6#
- 1...Re6
- 2.Sgxe6#
- 1...Rg6
- 2.Sxf5#
- 1...Bg6
- 2.Sge6#
- 1...Bg8
- 2.Sxf5#
- 1...c3
- 2.Rxa4#
- 1...Qd1
- Tries
- 1.Rgg6?
- threat
- 2.Sxf5#
- 2.Sge6#
- 1...Qxa6
- 2.Sxf5#
- 1...Rxh5
- 2.Sge6#
- 1...Rxg6
- 2.Sxf5#
- 1...Bxg6
- 2.Sge6#
- 1...e2
- 2.Sxf5#
- 1...c3
- 2.Rxa4#
- 1...e4
- 2.Qf6#
- 1...Qc2
- 2.Sge6#
- 1...Qc6
- 2.Sxf5#
- 1...f4
- 2.Sf5#
- 2.Sge6#
- 1...Qd7!
- threat
- 1.Rag6?
- threat
- 2.Sxf5#
- 2.Sge6#
- 1...Rxh5
- 2.Sge6#
- 1...Rxg6
- 2.Sxf5#
- 1...Bxg6
- 2.Sge6#
- 1...e2
- 2.Sxf5#
- 1...e4
- 2.Qf6#
- 1...Qc2
- 2.Sge6#
- 1...Qc6
- 2.Sxf5#
- 2.Rd1#
- 1...Qd7
- 2.Rd1#
- 1...Qa6
- 2.Sxf5#
- 2.Rd1#
- 1...f4
- 2.Sf5#
- 2.Sge6#
- 1...c3!
- threat
- 1.Qg6?
- threat
- 2.Sxf5#
- 2.Sge6#
- 1...Qxa6
- 2.Sxf5#
- 2.Rd1#
- 1...Rxh5
- 2.Sge6#
- 1...Rxg6
- 2.Sxf5#
- 1...Bxg6
- 2.Sge6#
- 1...e2
- 2.Sxf5#
- 1...c3
- 2.Rxa4#
- 1...Qc2
- 2.Sge6#
- 1...Qc6
- 2.Sxf5#
- 2.Rd1#
- 1...Qd7
- 2.Rd1#
- 1...Bg8
- 2.Sxf5#
- 1...f4
- 2.Sce6#
- 2.Sf5#
- 2.Sge6#
- 1...e4!
- threat
- 1.Rgg6?
- Keys
- 1.Bg6!
- threat
- 2.Sxf5#
- 2.Sge6#
- 1...Qxa6
- 2.Sxf5#
- 2.Rd1#
- 1...Rxg6
- 2.Sxf5#
- 1...Bxg6
- 2.Sge6#
- 1...e2
- 2.Sxf5#
- 1...c3
- 2.Rxa4#
- 1...e4
- 2.Qf6#
- 1...Qc2
- 2.Sge6#
- 1...Qc6
- 2.Sxf5#
- 2.Rd1#
- 1...Qd7
- 2.Rd1#
- 1...Rh5
- 2.Sge6#
- 1...f4
- 2.Sce6#
- 2.Sf5#
- 2.Sge6#
- threat
- 1.Bg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- Q(b);N_GUARD::R(A),XQ(b)
- Q(b);N_GUARD::R(A)
- Q(b);N_GUARD,XR(F)::R(A)
- R(i);N_GUARD,XB(E)::S(I)
- R(i);N_GUARD::S(I),XR(i)
- R(i);S_CUTB(j)::S(I),XP(h)
- B(j);S_CUTR(i)::S(I)
- B(j);N_GUARD::S(I),XP(h)
- P(c);OGATEB::R(F),XQ(b)
- Tries
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- Q(b);XR(F)::S(I),XP(h)
- R(i);XB(E)::S(I)
- R(i);XR(A)::S(I),XP(h)
- B(j);XR(A)::S(I)
- P(a);::S(I),XP(h)
- P(c);OGATEB::R(F),XQ(b)
- P(g);OGATEB::QAB(H)
- Q(b);::S(I)
- Q(b);::S(I),XP(h)
- Refutation
- Q(b);
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(i);XB(E)::S(I)
- R(i);XR(F)::S(I),XP(h)
- B(j);XR(F)::S(I)
- P(a);::S(I),XP(h)
- P(g);OGATEB::QAB(H)
- Q(b);::S(I)
- Q(b);N_GUARD::R(A)
- Refutation
- P(c);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(i);XB(E)::S(I)
- R(i);XQ(H)::S(I),XP(h)
- B(j);XQ(H)::S(I)
- P(a);::S(I),XP(h)
- P(c);OGATEB::R(F),XQ(b)
- Q(b);::S(I)
- Q(b);N_GUARD::R(A)
- B(j);::S(I),XP(h)
- Refutation
- P(g);
- Try
- Actual
- B(E);
- Threat
- DUALS(2)
- Vars
- R(i);XB(E)::S(I),XP(h)
- B(j);XB(E)::S(I)
- P(a);::S(I),XP(h)
- P(c);OGATEB::R(F),XQ(b)
- P(g);OGATEB::QAB(H)
- Q(b);::S(I)
- Q(b);N_GUARD::R(A)
- R(i);::S(I)
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).