MESON Chess Problem Database
Problem Display
PID: 152643 (1b6/4q2p/4p3/2B4Q/R1P1k1P1/2PN3p/2P1K3/4n3 w - - 0 1)
Bonivento, Oscar
1st HM., L'Italia Scacchistica, 1984
#2
9 + 7
| 35 | L'Italia Scacchistica | 1985 |
| 23 | Die Schwalbe | 2002 |
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Qxh7#
- 1...Qd8
- 2.Qxh7#
- 1...Bf4
- 2.Sf2#
- 1...Be5
- 2.Qxe5#
- 1...Ba7
- 2.Qe5#
- 1...e5
- 2.Qf5#
- 1...h6
- 2.Qg6#
- 1...Qd6
- Tries
- 1.Be3?
- threat
- 2.Sf2#
- 2.c5#
- 1...Sxc2
- 2.Sf2#
- 1...Sxd3
- 2.cxd3#
- 1...Qa3
- 2.Sf2#
- 2.Qxh7#
- 1...Qb4
- 2.Sf2#
- 2.Qxh7#
- 1...Qh4
- 2.Sc5#
- 2.c5#
- 1...Qc5
- 2.Sf2#
- 2.Sxc5#
- 1...Qd6
- 2.Sf2#
- 2.Qxh7#
- 1...Qf6
- 2.Sc5#
- 1...Qd8
- 2.Sf2#
- 2.Sc5#
- 2.Qxh7#
- 1...Qf8
- 2.c5#
- 1...Qa7
- 2.Sf2#
- 1...Qb7
- 2.Sf2#
- 2.Sc5#
- 1...Qd7
- 2.Sf2#
- 2.Sc5#
- 1...Qf7
- 2.Sc5#
- 2.c5#
- 1...Qg7
- 2.Sf2#
- 2.Sc5#
- 1...Qe8
- 2.Sf2#
- 2.Sc5#
- 1...Bg3
- 2.c5#
- 1...Be5
- 2.Sf2#
- 2.Qxe5#
- 1...Sf3
- 2.Sf2#
- 1...e5
- 2.Sf2#
- 2.Qf5#
- 1...Qg5!
- threat
- 1.Bxe7?
- threat
- 2.Qxh7#
- 2.c5#
- 1...Sxc2
- 2.Qxh7#
- 1...Be5
- 2.Qxe5#
- 2.Qxh7#
- 1...Sf3
- 2.Qxh7#
- 1...e5
- 2.Qf5#
- 2.Qxh7#
- 1...h6
- 2.Qg6#
- 2.c5#
- 1...Sxd3!
- threat
- 1.Qg5?
- threat
- 2.Sf2#
- 2.Qe3#
- 1...Qxc5
- 2.Sxc5#
- 1...Sxc2
- 2.Sf2#
- 1...Sxd3
- 2.Qe3#
- 2.cxd3#
- 1...Qf6
- 2.Qe3#
- 1...Qf8
- 2.Qe3#
- 1...Qf7
- 2.Qe3#
- 1...Bg3
- 2.Qe3#
- 1...Bf4
- 2.Sf2#
- 2.Qxf4#
- 1...Sg2
- 2.Sf2#
- 1...Qxg5!
- threat
- 1.Be3?
- Keys
- 1.Bd6!
- threat
- 2.Sf2#
- 2.Sc5#
- 2.Qe5#
- 2.c5#
- 1...Qxd6
- 2.Qxh7#
- 1...Bxd6
- 2.c5#
- 1...Sxc2
- 2.Sf2#
- 2.Sc5#
- 2.Qe5#
- 1...Sxd3
- 2.cxd3#
- 1...Qh4
- 2.Sc5#
- 2.Qe5#
- 2.c5#
- 1...Qg5
- 2.Sf2#
- 1...Qf6
- 2.Sc5#
- 1...Qf8
- 2.Sc5#
- 2.Qe5#
- 2.c5#
- 1...Qa7
- 2.Qe5#
- 1...Qb7
- 2.Sf2#
- 2.Sc5#
- 2.Qe5#
- 1...Qc7
- 2.Sf2#
- 2.Qe5#
- 2.c5#
- 1...Qd7
- 2.Sf2#
- 2.Sc5#
- 2.Qe5#
- 1...Qf7
- 2.Sc5#
- 2.Qe5#
- 2.c5#
- 1...Qg7
- 2.Sf2#
- 2.Sc5#
- 1...Qe8
- 2.Sf2#
- 2.Sc5#
- 2.Qe5#
- 1...Ba7
- 2.Qe5#
- 2.c5#
- 1...Sf3
- 2.Sf2#
- 2.Sc5#
- 1...e5
- 2.Qf5#
- threat
- 1.Bd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 5
- Sets
- Q(e);N_GUARD::QAB(I),XP(f)
- B(g);SBLOCK::S(D)
- B(g);N_GUARD::QAR1(I),XB(g)
- B(g);N_GUARD::QAR1(I)
- P(d);N_GUARD::QAB1(I)
- P(f);N_GUARD::QAB(I)
- Tries
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- S(a);XP(A)::S(D)
- S(a);OGATE,XS(D)::P(A),XS(a)
- Q(e);N_GUARD::S(D)
- Q(e);::R(E)+P(F)
- Q(e);::S(D)
- B(g);::R(E)+P(F)
- S(a);::S(D)
- Refutation
- Q(e);
- Try
- B(H);XQ(e)
- Threat
- DUALS(2)
- Vars
- S(a);XP(A)::QAB(I),XP(f)
- S(a);::QAB(I),XP(f)
- Refutation
- S(a);XS(D)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(e);XB(H)::S(D),XQ(e)
- S(a);XP(A)::S(D)
- Q(e);::QAR1(I)
- B(g);::QAR1(I)
- S(a);::S(D)
- Refutation
- Q(e);XQ(I)
- Try
- Actual
- B(H);
- Threat
- DUALS(4)
- Vars
- Q(e);N_GUARD,XB(H)::QAB(I),XP(f)
- B(g);XB(H)::R(E)+P(F)
- S(a);OGATE,XS(D)::P(A),XS(a)
- Q(e);::S(D)
- Q(e);::QAR1(I)
- P(d);N_GUARD::QAB1(I)
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).