MESON Chess Problem Database
Problem Display
PID: 172045 (1n6/bq3pPQ/rp3N1p/3NkBP1/1BP3pr/7b/4PR2/3RK3 w - - 0 1)
Apro, Laszlo
2nd Prize, Problem Observer, 1985
#2
12 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qxd5
- 2.Rxd5#
- 1...Qxd5
- Tries
- 1.Se4?
- threat
- 2.Bc3#
- 2.Bd6#
- 1...Qxd5
- 2.Rxd5#
- 1...Qd7
- 2.Bc3#
- 1...Qc6
- 2.Bc3#
- 1...Qc7
- 2.Bc3#
- 1...Qe7
- 2.Bc3#
- 1...Ra3
- 2.Bd6#
- 1...Sc6
- 2.Bd6#
- 1...b5!
- threat
- 1.Se8?
- threat
- 2.Bc3#
- 2.Bd6#
- 1...Qxd5
- 2.Rxd5#
- 1...Qd7
- 2.Bc3#
- 1...Qc6
- 2.Bc3#
- 1...Qc7
- 2.Bc3#
- 1...Qe7
- 2.Bc3#
- 1...Ra3
- 2.Bd6#
- 1...Sc6
- 2.Bd6#
- 1...g3
- 2.Bd6#
- 1...b5!
- threat
- 1.Bb1?
- threat
- 2.Qe4#
- 2.Qf5#
- 1...Ke6
- 2.Qe4#
- 2.Qf5#
- 1...Qxd5
- 2.Qf5#
- 1...Qd7
- 2.Qe4#
- 1...Qc8
- 2.Qe4#
- 1...Bg2
- 2.Qf5#
- 1...g3!
- threat
- 1.Bc2?
- threat
- 2.Qe4#
- 2.Qf5#
- 1...Ke6
- 2.Qe4#
- 2.Qf5#
- 1...Qxd5
- 2.Qf5#
- 1...Qd7
- 2.Qe4#
- 1...Qc8
- 2.Qe4#
- 1...Bg2
- 2.Qf5#
- 1...g3!
- threat
- 1.Be6?
- threat
- 2.Qe4#
- 2.Qf5#
- 1...Kxe6
- 2.Qe4#
- 2.Qf5#
- 1...Qxd5
- 2.Qf5#
- 1...fxe6
- 2.Qe4#
- 1...Bg2
- 2.Qf5#
- 1...g3!
- threat
- 1.Bd7?
- threat
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 1...Qxd5
- 2.Rxd5#
- 2.Rf5#
- 2.Qf5#
- 1...Qxd7
- 2.Qe4#
- 1...Sxd7
- 2.Qe4#
- 2.Qf5#
- 1...Bg2
- 2.Rf5#
- 2.Qf5#
- 1...g3!
- threat
- 1.Bc8?
- threat
- 2.Rf5#
- 2.Qe4#
- 2.Qf5#
- 1...Qxd5
- 2.Rxd5#
- 2.Rf5#
- 2.Qf5#
- 1...Qxc8
- 2.Qe4#
- 1...Qd7
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 2.Qf5#
- 1...Bg2
- 2.Rf5#
- 2.Qf5#
- 1...g3!
- threat
- 1.Se4?
- Keys
- 1.Bxg4!
- threat
- 2.Qe4#
- 2.Qf5#
- 1...Qxd5
- 2.Rxd5#
- 2.Qf5#
- 1...Rxg4
- 2.Qf5#
- 1...Bxg4
- 2.Qe4#
- 1...Qd7
- 2.Qe4#
- 1...Qc8
- 2.Qe4#
- 1...Bg2
- 2.Qf5#
- threat
- 1.Bxg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- Q(i);OGATE,XS(G)::R1(A),XQ(i)
- Tries
- Try
- S(J);
- Threat
- DUALS(2)
- Vars
- Q(i);OGATE,XS(G)::R1(A),XQ(i)
- Q(i);::B(E)
- R(e);::B(E)
- S(k);::B(E)
- Refutation
- P(f);
- Try
- S(J);
- Threat
- DUALS(2)
- Vars
- Q(i);OGATE,XS(G)::R1(A),XQ(i)
- Q(i);::B(E)
- R(e);::B(E)
- S(k);::B(E)
- P(b);::B(E)
- Refutation
- P(f);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- Q(i);XS(G)::QAR1(L)
- Q(i);::QAR1(L)
- B(a);::QAR1(L)
- Refutation
- P(b);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- Q(i);XS(G)::QAR1(L)
- Q(i);::QAR1(L)
- B(a);::QAR1(L)
- Refutation
- P(b);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- Q(i);XS(G)::QAR1(L)
- P(j);SBLOCK,XB(H)::QAR1(L)
- B(a);::QAR1(L)
- Refutation
- P(b);
- Try
- B(H);
- Threat
- DUALS(3)
- Vars
- Q(i);XB(H)::QAR1(L)
- Refutation
- P(b);
- Try
- B(H);
- Threat
- DUALS(3)
- Vars
- Q(i);XB(H)::QAR1(L)
- Q(i);::QAR1(L)
- Refutation
- P(b);
- Try
- Actual
- B(H);XP(b)
- Threat
- DUALS(2)
- Vars
- R(c);XB(H)::QAR1(L)
- B(a);XB(H)::QAR1(L)
- Q(i);::QAR1(L)
- B(a);::QAR1(L)
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).