MESON Chess Problem Database
Problem Display
PID: 207256 (8/p1p1pB1N/2q5/4p1p1/N3k1P1/4Pn2/2p2P2/2K2Q2 w - - 0 1)
Klark, Dmitry Vasilevich
Schachzeitung, 1869
#2
8 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qb5
- 2.Sc3#
- 1...Qd5
- 2.Sc3#
- 2.Bg6#
- 1...Qb7
- 2.Sc3#
- 2.Sc5#
- 1...Qd7
- 2.Sc3#
- 2.Sc5#
- 1...Qa8
- 2.Sc3#
- 2.Sc5#
- 1...Qe8
- 2.Sc3#
- 2.Sc5#
- 1...Qc3
- 2.Sxc3#
- 1...Qc5
- 2.Sxc5#
- 1...Qa6
- 2.Sc3#
- 2.Sc5#
- 1...Qb6
- 2.Sc3#
- 1...Qd6
- 2.Sc3#
- 1...Qe6
- 2.Sc3#
- 1...Qf6
- 2.Sc3#
- 2.Sc5#
- 1...Qg6
- 2.Sc3#
- 2.Sc5#
- 1...Qh6
- 2.Sc3#
- 2.Sc5#
- 1...Se1
- 2.Sxg5#
- 1...Sg1
- 2.Sxg5#
- 1...Sd2
- 2.Sxg5#
- 1...Sh2
- 2.Sxg5#
- 1...Sd4
- 2.Sxg5#
- 1...Sh4
- 2.Sxg5#
- 1...e6
- 2.Sf6#
- 1...Qb5
- Tries
- 1.Sf6+?
- 1...Qxf6
- 2.Sc3#
- 2.Sc5#
- 1...exf6!
- 1...Qxf6
- 1.Bc4?
- threat
- 2.Sc3#
- 2.Qd3#
- 1...Qxa4
- 2.Qd3#
- 1...Se1
- 2.Sxg5#
- 1...Sg1
- 2.Sxg5#
- 1...Sd2
- 2.Sxg5#
- 1...Sh2
- 2.Sxg5#
- 1...Sd4
- 2.Sxg5#
- 1...Sh4
- 2.Sxg5#
- 1...Qd5
- 2.Sc3#
- 1...Qd7
- 2.Sc3#
- 2.Sc5#
- 1...Qd6
- 2.Sc3#
- 1...Qxc4!
- threat
- 1.Bd5+?
- 1...Qxd5
- 2.Sc3#
- 1...Kxd5!
- 1...Qxd5
- 1.Bg6+?
- 1...Qxg6
- 2.Sc3#
- 1...Kd5!
- 1...Qxg6
- 1.Qc4+?
- 1...Sd4
- 2.Sxg5#
- 1...Qxc4!
- 1...Sd4
- 1.Sf6+?
- Keys
- 1.Qa6!
- 1...Qxa4
- 2.Qg6#
- 1...Qxa6
- 2.Sc5#
- 1...Qb5
- 2.Qg6#
- 1...Qc4
- 2.Qg6#
- 1...Qe6
- 2.Sc3#
- 1...Se1
- 2.Sxg5#
- 1...Sg1
- 2.Sxg5#
- 1...Sd2
- 2.Sxg5#
- 1...Sh2
- 2.Sxg5#
- 1...Sd4
- 2.Sxg5#
- 1...Sh4
- 2.Sxg5#
- 1...e6
- 2.Sf6#
- 1...Qd5
- 2.Sc3#
- 2.Bg6#
- 2.Qg6#
- 1...Qb7
- 2.Sc3#
- 2.Sc5#
- 2.Qg6#
- 1...Qd7
- 2.Sc3#
- 2.Sc5#
- 1...Qa8
- 2.Sc3#
- 2.Sc5#
- 2.Qg6#
- 1...Qe8
- 2.Sc3#
- 2.Sc5#
- 2.Qg6#
- 1...Qc3
- 2.Sxc3#
- 2.Qg6#
- 1...Qc5
- 2.Sxc5#
- 2.Qg6#
- 1...Qb6
- 2.Sc3#
- 1...Qd6
- 2.Sc3#
- 1...Qf6
- 2.Sc3#
- 2.Sc5#
- 1...Qg6
- 2.Sc3#
- 2.Sc5#
- 2.Qxg6#
- 1...Qh6
- 2.Sc3#
- 2.Sc5#
- 1...Qxa4
- 1.Qa6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(f);N_GUARD::S(E)
- Q(f);N_GUARD::S(E),XQ(f)
- S(b);N_GUARD::S(H),XP(e)
- P(i);N_GUARD,S_CUTQ(f)::S(H)
- Tries
- Try
- S(H);CHECK
- Refutation
- P(i);XS(H)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(f);XS(E)::QAB1(B)
- S(b);N_GUARD::S(H),XP(e)
- Q(f);::S(E)
- Refutation
- Q(f);XB(G)
- Try
- B(G);CHECK
- Vars
- Q(f);XB(G)::S(E)
- Refutation
- K(c);S_FLIGHT,XB(G)
- Try
- B(G);CHECK
- Vars
- Q(f);XB(G)::S(E)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(B);CHECK
- Vars
- S(b);P_SPINS(b)::S(H),XP(e)
- Refutation
- Q(f);XQ(B)
- Try
- Actual
- Q(B);
- Vars
- Q(f);OGATE,XS(E)::QAB(B)
- Q(f);N_GUARD,XQ(B)::S(E)
- Q(f);OGATE::QAB(B)
- Q(f);N_GUARD::S(E)
- S(b);N_GUARD::S(H),XP(e)
- P(i);N_GUARD,S_CUTQ(f)::S(H)
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).