MESON Chess Problem Database
Problem Display
PID: 161536 (5N2/1q6/5p2/2P1k3/1p4P1/3Qp1P1/4K1p1/b5N1 w - - 0 1)
Antonov, Yuri Mikhailovich
Birnov MT, 1985
#2
7 + 7
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qf3+
- 2.Sxf3#
- 1...Qe4
- 2.Qd6#
- 1...Qa6
- 2.Sf3#
- 1...Qc8
- 2.Sf3#
- 1...Qb5
- 2.Sf3#
- 1...Qb6
- 2.Sf3#
- 1...Qa7
- 2.Sf3#
- 1...Qc7
- 2.Sf3#
- 1...Qd7
- 2.Sf3#
- 1...Qe7
- 2.Sf3#
- 1...Qf7
- 2.Sf3#
- 1...Qg7
- 2.Sf3#
- 1...Qh7
- 2.Sf3#
- 1...Qb8
- 2.Sf3#
- 1...Bd4
- 2.Qf5#
- 1...Qf3+
- Tries
- 1.Qc4?
- threat
- 2.Sg6#
- 1...Qf3+
- 2.Sxf3#
- 1...Bd4
- 2.Qe6#
- 1...Qe4
- 2.Sd7#
- 1...Qd5
- 2.Qf4#
- 1...Qf7
- 2.Sf3#
- 1...Qg7
- 2.Sf3#
- 1...Qh7
- 2.Sf3#
- 1...f5!
- threat
- 1.Qc4?
- Keys
- 1.Kxe3!
- threat
- 2.Qf5#
- 2.Qd6#
- 1...Qf3+
- 2.Sxf3#
- 1...Qe4+
- 2.Qxe4#
- 1...Bd4+
- 2.Qxd4#
- 1...f5
- 2.Qxf5#
- 2.Qd6#
- 1...Qd5
- 2.Qf5#
- 1...Qa6
- 2.Sf3#
- 2.Qe4#
- 2.Qf5#
- 1...Qc6
- 2.Qf5#
- 1...Qc8
- 2.Sf3#
- 2.Qe4#
- 2.Qd6#
- 1...Qb6
- 2.Sf3#
- 2.Qe4#
- 2.Qf5#
- 1...Qc7
- 2.Sf3#
- 2.Qe4#
- 2.Qf5#
- 1...Qd7
- 2.Sf3#
- 2.Qe4#
- 1...Qe7
- 2.Sf3#
- 2.Qe4#
- 2.Qf5#
- 1...Qh7
- 2.Sf3#
- 2.Qd6#
- 1...Qb8
- 2.Sf3#
- 2.Qe4#
- 2.Qf5#
- threat
- 1.Kxe3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- Q(g);CHECK,N_GUARD::S(A),XQ(g)
- Q(g);SBLOCK::QAB1(C)
- Q(g);N_GUARD,P_PINQ(C)::S(A)
- Q(g);N_GUARD::S(A)
- B(a);SBLOCK::QAR1(C)
- Tries
- Try
- Q(C);
- Threat
- S(G)
- Vars
- Q(g);CHECK,N_GUARD::S(A),XQ(g)
- B(a);SBLOCK::QAR1(C)
- Q(g);N_GUARD::S(G)
- Q(g);SBLOCK::QAB1(C)
- Q(g);N_GUARD::S(A)
- Refutation
- P(f);
- Try
- Actual
- K(B);P-FLIGHT,XP(c)
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK,N_GUARD::S(A),XQ(g)
- Q(g);CHECK,N_GUARD::QAR1(C),XQ(g)
- B(a);CHECK,N_GUARD::QAB1(C),XB(a)
- Q(g);SBLOCK::QAR1(C)
- Q(g);::QAR1(C)
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).