MESON Chess Problem Database
Problem Display
PID: 105552 (r1bB4/N1RR2p1/6K1/3Pk3/p7/nN1p4/1p1Q4/2q3bB w - - 0 1)
Koder, Gabor
Vizugyi Chess Club, 1981
#2
9 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Sc6#
- 2.Qg5#
- 1...Qb1
- 2.Sc6#
- 2.Qg5#
- 1...Qd1
- 2.Sc6#
- 2.Qg5#
- 1...Qe1
- 2.Sc6#
- 2.Qg5#
- 1...Qf1
- 2.Sc6#
- 1...Qc2
- 2.Qg5#
- 1...Qc3
- 2.Qg5#
- 1...Qc4
- 2.Qg5#
- 1...Qc5
- 2.Qg5#
- 1...Qc6+
- 2.Sxc6#
- 1...Qxc7
- 2.Bxc7#
- 2.Qg5#
- 1...Bc5
- 2.Sc6#
- 1...Sc2
- 2.Sc6#
- 1...Sc4
- 2.Sc6#
- 1...Qa1
- Tries
- 1.Rxc1?
- threat
- 2.Sc6#
- 2.Bc7#
- 2.Qg5#
- 1...Rxa7
- 2.Qg5#
- 1...Bxa7
- 2.Bc7#
- 2.Qg5#
- 2.Qh2#
- 1...Bxd7
- 2.Bc7#
- 1...bxc1B
- 2.Sc6#
- 2.Bc7#
- 1...bxc1R
- 2.Qg5#
- 1...axb3
- 2.Sc6#
- 1...Be3
- 2.Bc7#
- 2.Qxe3#
- 1...Bc5
- 2.Sc6#
- 2.Qg5#
- 2.Qh2#
- 1...Bb6
- 2.Sc6#
- 2.Qg5#
- 2.Qh2#
- 1...Bb7
- 2.Bc7#
- 2.Qg5#
- 1...Sc4
- 2.Sc6#
- 2.Qg5#
- 1...Sb5
- 2.Sc6#
- 2.Qg5#
- 1...bxc1Q!
- threat
- 1.Rc2?
- threat
- 2.Sc6#
- 2.Bc7#
- 1...Qxd2
- 2.Bc7#
- 1...Qxc2
- 2.Qg5#
- 1...Bxa7
- 2.Bc7#
- 1...Bxd7
- 2.Bc7#
- 1...axb3
- 2.Sc6#
- 1...Be3
- 2.Bc7#
- 1...Bc5
- 2.Sc6#
- 1...Bb6
- 2.Sc6#
- 1...Bb7
- 2.Bc7#
- 1...Sc4
- 2.Sc6#
- 1...Sb5
- 2.Sc6#
- 1...Rxa7!
- threat
- 1.Rc3?
- threat
- 2.Sc6#
- 2.Bc7#
- 1...Qxd2
- 2.Bc7#
- 1...Qxc3
- 2.Qg5#
- 1...Bxa7
- 2.Bc7#
- 1...Bxd7
- 2.Bc7#
- 1...axb3
- 2.Sc6#
- 1...Be3
- 2.Bc7#
- 1...Bc5
- 2.Sc6#
- 1...Bb6
- 2.Sc6#
- 1...Bb7
- 2.Bc7#
- 1...Sc4
- 2.Sc6#
- 1...Sb5
- 2.Sc6#
- 1...Rxa7!
- threat
- 1.Rc5?
- threat
- 2.Sc6#
- 2.Bc7#
- 1...Qxd2
- 2.Bc7#
- 1...Qxc5
- 2.Qg5#
- 1...Bxc5
- 2.Sc6#
- 1...Bxd7
- 2.Bc7#
- 1...axb3
- 2.Sc6#
- 1...Be3
- 2.Bc7#
- 1...Bb7
- 2.Bc7#
- 1...Sc4
- 2.Sc6#
- 1...Sb5
- 2.Sc6#
- 1...Rxa7!
- threat
- 1.Rc6?
- threat
- 2.Bc7#
- 2.Re6#
- 1...Qxc6+
- 2.Sxc6#
- 1...Qxd2
- 2.Bc7#
- 1...Rxa7
- 2.Re6#
- 1...Bxd7
- 2.Bc7#
- 1...Be3
- 2.Bc7#
- 1...Qc5
- 2.Re6#
- 2.Qg5#
- 1...Bc5
- 2.Re6#
- 1...Bb6
- 2.Re6#
- 1...Sc4
- 2.Re6#
- 1...Sb5
- 2.Re6#
- 1...axb3!
- threat
- 1.Re7+?
- 1...Be6
- 2.Rxe6#
- 1...Kd6!
- 1...Be6
- 1.Qf4+?
- 1...Qxf4
- 2.Sc6#
- 1...Kxf4!
- 1...Qxf4
- 1.Qh2+?
- 1...Qf4
- 2.Sc6#
- 1...Bxh2!
- 1...Qf4
- 1.Rxc1?
- Keys
- 1.Rc4!
- threat
- 2.Sc6#
- 2.Bc7#
- 2.Re4#
- 1...Qxc4
- 2.Qg5#
- 1...Rxa7
- 2.Re4#
- 1...Bxa7
- 2.Bc7#
- 2.Re4#
- 1...Bxd7
- 2.Bc7#
- 1...Sxc4
- 2.Sc6#
- 1...Qe1
- 2.Sc6#
- 2.Bc7#
- 2.Qf4#
- 2.Qg5#
- 1...Bd4
- 2.Sc6#
- 2.Bc7#
- 1...Bc5
- 2.Sc6#
- 2.Re4#
- 1...Bb6
- 2.Sc6#
- 2.Re4#
- 1...Bb7
- 2.Bc7#
- 2.Re4#
- 1...Sb5
- 2.Sc6#
- 2.Re4#
- threat
- 1.Rc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::S(F)
- Q(a);N_GUARD::QAR2(B)
- Q(a);CHECK,N_GUARD::S(F),XQ(a)
- B(b);S_CUTQ(a)::S(F)
- S(d);S_CUTQ(a)::S(F)
- Tries
- Try
- R(G);XQ(a)
- Threat
- DUALS(3)
- Vars
- R(i);XS(F)::QAR2(B)
- B(j);XR(H)::B(I)
- P(c);XR(G)::QAR2(B)
- P(f);XS(C)::S(F)
- Refutation
- P(c);XR(G)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::B(I)
- Q(a);N_GUARD,XR(G)::QAR2(B)
- B(b);XS(F)::B(I)
- B(j);XR(H)::B(I)
- P(f);XS(C)::S(F)
- B(b);::B(I)
- B(b);::S(F)
- B(j);::B(I)
- S(d);::S(F)
- Refutation
- R(i);XS(F)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::B(I)
- Q(a);N_GUARD,XR(G)::QAR2(B)
- B(b);XS(F)::B(I)
- B(j);XR(H)::B(I)
- P(f);XS(C)::S(F)
- B(b);::B(I)
- B(b);::S(F)
- B(j);::B(I)
- S(d);::S(F)
- Refutation
- R(i);XS(F)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(B)::B(I)
- Q(a);N_GUARD,XR(G)::QAR2(B)
- B(b);XR(G)::S(F)
- B(j);XR(H)::B(I)
- P(f);XS(C)::S(F)
- B(b);::B(I)
- B(j);::B(I)
- S(d);::S(F)
- Refutation
- R(i);XS(F)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,XR(G)::S(F),XQ(a)
- Q(a);XQ(B)::B(I)
- R(i);XS(F)::R1(G)
- B(j);XR(H)::B(I)
- B(b);::B(I)
- B(b);::R1(G)
- S(d);::R1(G)
- Refutation
- P(f);XS(C)
- Try
- R(H);CHECK
- Vars
- B(j);N_GUARD,P_SPINB(j)::R1(H),XB(j)
- Refutation
- K(g);S_FLIGHT
- Try
- Q(B);CHECK
- Vars
- Q(a);SBLOCK,XQ(B)::S(F)
- Refutation
- K(g);S_FLIGHT,XQ(B)
- Try
- Q(B);CHECK
- Vars
- Q(a);P_SPINQ(a)::S(F)
- Refutation
- B(b);XQ(B)
- Try
- Actual
- R(G);
- Threat
- DUALS(3)
- Vars
- Q(a);N_GUARD,XR(G)::QAR2(B)
- R(i);XS(F)::R1(G)
- B(j);XR(H)::B(I)
- S(d);XR(G)::S(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).