MESON Chess Problem Database
Problem Display
PID: 90186 (5Qq1/3pr3/8/1KbkBPN1/2p2R2/1P2pN2/2rP2B1/8 w - - 0 1)
Wielgos, Oskar
Die Schwalbe, 1982
#2
10 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf7
- 2.Qa8#
- 1...Qh7
- 2.Qa8#
- 1...Qxg5
- 2.Qa8#
- 1...Qg7
- 2.Qa8#
- 1...Ra2
- 2.bxc4#
- 1...Rxd2
- 2.bxc4#
- 1...Rxe5
- 2.Qxc5#
- 1...Re6
- 2.Qxc5#
- 1...Rf7
- 2.Qxc5#
- 1...Rg7
- 2.Qxc5#
- 1...Rh7
- 2.Qxc5#
- 1...Re8
- 2.Qxc5#
- 1...Ba3
- 2.Rd4#
- 1...Bb4
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 1...Bd6
- 2.Rd4#
- 1...Qf7
- Tries
- 1.Bc7?
- threat
- 2.Se5#
- 1...Qxg5
- 2.Qa8#
- 1...Rxd2
- 2.bxc4#
- 1...Re4
- 2.Qxc5#
- 1...Re5
- 2.Sxe5#
- 2.Qxc5#
- 1...Bd6
- 2.Rd4#
- 1...d6!
- threat
- 1.Qxe7?
- threat
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Qxc5#
- 1...Qxg5
- 2.Sxg5#
- 2.Qxc5#
- 2.Qf7#
- 1...Rxd2
- 2.Sxd2#
- 2.Qxc5#
- 2.bxc4#
- 1...Bxe7
- 2.Rd4#
- 1...cxb3
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 1...Qe6
- 2.Qxc5#
- 1...Qc8
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Qf7#
- 1...Qf8
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 1...Ba3
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Rd4#
- 1...Bb4
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Rd4#
- 1...Bd4
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sxd4#
- 2.Sh4#
- 2.Rxd4#
- 2.Qd6#
- 2.Qxd7#
- 1...Bb6
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Qd6#
- 2.Qxd7#
- 1...Bd6
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Rd4#
- 2.Qxd6#
- 1...Ba7
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Qd6#
- 2.Qxd7#
- 1...d6
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Qb7#
- 1...Qb8+!
- threat
- 1.Qf6?
- threat
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 1...Qxg5
- 2.Sxg5#
- 1...Rxd2
- 2.Sxd2#
- 2.bxc4#
- 1...Rxe5
- 2.Sxe5#
- 2.Qxe5#
- 1...Bd4
- 2.Se1#
- 2.Sg1#
- 2.Sh2#
- 2.Sxd4#
- 2.Sh4#
- 2.Rxd4#
- 2.Qd6#
- 1...Qb8+!
- threat
- 1.Qc8?
- threat
- 2.Qb7#
- 2.Qxc5#
- 1...Rxe5
- 2.Qxc5#
- 1...cxb3
- 2.Qb7#
- 1...d6
- 2.Qc6#
- 1...Qe6
- 2.Qxc5#
- 1...Qg6
- 2.Qxc5#
- 1...Re6
- 2.Qxc5#
- 1...Ba3
- 2.Rd4#
- 2.Qb7#
- 1...Bb4
- 2.Rd4#
- 2.Qb7#
- 1...Bd4
- 2.Rxd4#
- 2.Qb7#
- 1...Bb6
- 2.Qb7#
- 1...Bd6
- 2.Rd4#
- 2.Qb7#
- 1...Ba7
- 2.Qb7#
- 1...Qxc8!
- threat
- 1.Qxg8+?
- 1...Rf7
- 2.Qxf7#
- 2.Qa8#
- 1...Re6!
- 1...Rf7
- 1.dxe3?
- threat
- 2.e4#
- 1...Rxe5
- 2.Qxc5#
- 1...Re2
- 2.bxc4#
- 1...Bxe3!
- threat
- 1.d4?
- threat
- 2.Sd2#
- 1...Qxg5
- 2.Qa8#
- 1...Rxg2
- 2.bxc4#
- 1...Rxe5
- 2.Qxc5#
- 1...Bxd4
- 2.Rxd4#
- 1...Rd2
- 2.Sxd2#
- 2.bxc4#
- 1...Re2
- 2.bxc4#
- 1...Rf2
- 2.bxc4#
- 1...cxd4 ep!
- threat
- 1.Bc7?
- Keys
- 1.Sf7!
- threat
- 2.S3g5#
- 1...Qxf7
- 2.Qa8#
- 1...Qxg2
- 2.Qa8#
- 1...Rxd2
- 2.bxc4#
- 1...Rxe5
- 2.Qxc5#
- 1...Rxf7
- 2.Qxc5#
- 1...Qg3
- 2.Qa8#
- 1...Qg4
- 2.Qa8#
- 1...Qg5
- 2.S3xg5#
- 2.Qa8#
- threat
- 1.Sf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 12
- Sets
- Q(h);N_GUARD::QAB(J)
- Q(h);N_GUARD,XS(I)::QAB(J)
- R(a);N_GUARD::P(C),XP(c)
- R(a);N_GUARD,XP(A)::P(C),XP(c)
- R(g);OGATE,XB(G)::QAR1(J),XB(d)
- R(g);OGATE::QAR1(J),XB(d)
- B(d);N_GUARD::R1(E)
- B(d);N_GUARD::R1(E),XB(d)
- Tries
- Try
- B(G);
- Threat
- B(B)+S(D)
- Vars
- Q(h);N_GUARD,XS(I)::QAB(J)
- R(a);N_GUARD,XP(A)::P(C),XP(c)
- R(g);OGATE::QAR1(J),XB(d)
- B(d);N_GUARD::R1(E)
- Refutation
- P(f);
- Try
- Q(J);XR(g)
- Threat
- DUALS(6)
- Vars
- B(d);N_GUARD,XQ(J)::R1(E)
- Q(h);::QAR1(J),XB(d)
- Refutation
- Q(h);CHECK
- Try
- Q(J);
- Threat
- DUALS(5)
- Vars
- Q(h);XS(I)::B(B)+S(D),XQ(h)
- Refutation
- Q(h);CHECK
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- R(g);XB(G)::QAR1(J),XB(d)
- P(c);XP(C)::QAB(J)
- P(f);N_GUARD::QAB1(J)
- Q(h);::QAR1(J),XB(d)
- R(g);::QAR1(J),XB(d)
- B(d);::QAB(J)
- Refutation
- Q(h);XQ(J)
- Try
- Q(J);CHECK,XQ(h)
- Refutation
- R(g);P_SPINR(g)
- Try
- P(A);XP(b)
- Threat
- P(A)
- Vars
- R(g);OGATE,XB(G)::QAR1(J),XB(d)
- R(a);N_GUARD::P(C),XP(c)
- Refutation
- B(d);XP(A)
- Try
- P(A);
- Threat
- B(B)+S(D)
- Vars
- Q(h);N_GUARD,XS(I)::QAB(J)
- R(a);N_GUARD,XB(B)::P(C),XP(c)
- R(g);OGATE,XB(G)::QAR1(J),XB(d)
- B(d);OGATE,XP(A)::R1(E),XB(d)
- R(a);N_GUARD::P(C),XP(c)
- Refutation
- P(c);EP,XP(A)
- Try
- Actual
- S(I);
- Threat
- B(B)+S(D)
- Vars
- Q(h);N_GUARD,XS(I)::QAB(J)
- Q(h);N_GUARD,XB(B)::QAB(J)
- R(a);N_GUARD,XP(A)::P(C),XP(c)
- R(g);OGATE,XB(G)::QAR1(J),XB(d)
- R(g);OGATE,XS(I)::QAR1(J),XB(d)
- Q(h);N_GUARD::QAB(J)
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).