MESON Chess Problem Database
Problem Display
PID: 198680 (3R4/1B2pN2/1K1p1p2/2B3p1/1pkppb2/7q/1PPp4/1N1R4 w - - 0 1)
Belli, Nicolo
L'Alfiere di Re, 1921
#2
9 + 11
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.b3#
- 1...Qg2
- 2.b3#
- 1...Qg4
- 2.b3#
- 1...Qf5
- 2.b3#
- 1...Qe6
- 2.b3#
- 1...Qd7
- 2.b3#
- 1...Qc8
- 2.b3#
- 1...Qh1
- 2.b3#
- 1...Qh2
- 2.b3#
- 1...Qh4
- 2.b3#
- 1...Qh5
- 2.b3#
- 1...Qh6
- 2.b3#
- 1...Qh7
- 2.b3#
- 1...Qh8
- 2.b3#
- 1...Bh2
- 2.Sxd2#
- 1...Be3
- 2.b3#
- 1...Bg3
- 2.Sxd2#
- 2.b3#
- 1...Be5
- 2.Sxd2#
- 1...b3
- 2.Sa3#
- 1...d3
- 2.b3#
- 1...e3
- 2.b3#
- 1...dxc5
- 2.Bd5#
- 2.Ba6#
- 1...d5
- 2.Bxd5#
- 2.Ba6#
- 1...e5
- 2.Sxd6#
- 1...Qf1
- Tries
- 1.Sc3?
- threat
- 2.Bd5#
- 2.Ba6#
- 1...bxc3
- 2.b3#
- 1...dxc3
- 2.b3#
- 1...Qf5
- 2.Ba6#
- 1...Qe6
- 2.Ba6#
- 1...Qd7
- 2.Bd5#
- 1...Qc8
- 2.Bd5#
- 1...d5
- 2.Bxd5#
- 2.Ba6#
- 1...e6
- 2.Ba6#
- 1...Qxc3!
- threat
- 1.Se5+?
- 1...Bxe5
- 2.Sxd2#
- 1...dxe5
- 2.Bd5#
- 2.Ba6#
- 1...fxe5!
- 1...Bxe5
- 1.Sxd6+?
- 1...Bxd6
- 2.Sxd2#
- 1...exd6!
- 1...Bxd6
- 1.Rxd6?
- threat
- 2.Bd5#
- 2.Ba6#
- 2.Rxd4#
- 1...Bxd6
- 2.Sxd2#
- 1...Qa3
- 2.Bd5#
- 2.Rxd4#
- 1...Qf5
- 2.Ba6#
- 2.Rxd4#
- 2.b3#
- 1...Qe6
- 2.Ba6#
- 2.b3#
- 1...Qd7
- 2.Bd5#
- 2.b3#
- 1...Qc8
- 2.Bd5#
- 2.Rxd4#
- 2.b3#
- 1...Qc3
- 2.Bd5#
- 2.Ba6#
- 1...Qd3
- 2.Bd5#
- 2.Ba6#
- 1...Qe3
- 2.Bd5#
- 2.Ba6#
- 1...Be3
- 2.Bd5#
- 2.Ba6#
- 2.b3#
- 1...Be5
- 2.Sxd2#
- 2.Bd5#
- 2.Ba6#
- 1...d3
- 2.Bd5#
- 2.Ba6#
- 2.Rd4#
- 2.b3#
- 1...e5
- 2.Bd5#
- 2.Ba6#
- 1...e6
- 2.Ba6#
- 2.Rxd4#
- 1...exd6!
- threat
- 1.Sc3?
- Keys
- 1.Rc8!
- 1...Qxc8
- 2.b3#
- 1...dxc5
- 2.Rxc5#
- 1...Qa3
- 2.Bxd6#
- 1...Qf1
- 2.Bxd6#
- 2.b3#
- 1...Qg2
- 2.Bxd6#
- 2.b3#
- 1...Qg4
- 2.b3#
- 1...Qf5
- 2.b3#
- 1...Qe6
- 2.b3#
- 1...Qd7
- 2.b3#
- 1...Qh1
- 2.Bxd6#
- 2.b3#
- 1...Qh2
- 2.Bxd6#
- 2.b3#
- 1...Qb3
- 2.Bxd6#
- 1...Qc3
- 2.Bxd6#
- 1...Qd3
- 2.Bxd6#
- 1...Qe3
- 2.Bxd6#
- 1...Qf3
- 2.Bxd6#
- 1...Qg3
- 2.Bxd6#
- 1...Qh4
- 2.Bxd6#
- 2.b3#
- 1...Qh5
- 2.Bxd6#
- 2.b3#
- 1...Qh6
- 2.Bxd6#
- 2.b3#
- 1...Qh7
- 2.Bxd6#
- 2.b3#
- 1...Qh8
- 2.b3#
- 1...Bh2
- 2.Sxd2#
- 1...Be3
- 2.b3#
- 1...Bg3
- 2.Sxd2#
- 2.b3#
- 1...Be5
- 2.Sxd2#
- 1...b3
- 2.Sa3#
- 1...d3
- 2.b3#
- 1...e3
- 2.b3#
- 1...g4
- 2.Bxd6#
- 1...d5
- 2.Ba6#
- 1...f5
- 2.Bxd6#
- 1...e5
- 2.Sxd6#
- 1...e6
- 2.Bxd6#
- 1...Qxc8
- 1.Rc8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 8
- Sets
- Q(b);N_GUARD::P(C)
- B(g);N_GUARD::S(A),XP(a)
- B(g);S_CUTQ(b)::P(C)
- P(c);N_GUARD,S_CUTQ(b)::S(A)
- P(e);S_CUTQ(b)::P(C)
- P(f);S_CUTQ(b)::P(C)
- P(k);N_GUARD,S_CUTB(g)::S(H),XP(i)
- Tries
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- P(c);SBLOCK,XS(A)::P(C)
- P(e);SBLOCK,XS(A)::P(C)
- Q(b);::B(G)
- P(k);::B(G)
- Refutation
- Q(b);XS(A)
- Try
- S(H);CHECK
- Vars
- B(g);XS(H)::S(A),XP(a)
- Refutation
- P(j);XS(H)
- Try
- S(H);CHECK,XP(i)
- Vars
- B(g);XS(H)::S(A),XP(a)
- Refutation
- P(k);XS(H)
- Try
- R(I);XP(i)
- Threat
- DUALS(3)
- Vars
- B(g);N_GUARD,XR(I)::S(A),XP(a)
- Refutation
- P(k);XR(I)
- Try
- Actual
- R(I);
- Vars
- Q(b);N_GUARD,XR(I)::P(C)
- P(i);OGATE,P_SPINP(i),XB(E)::R1(I),XP(i)
- Q(b);N_GUARD::R(I)+B(E),XP(i)
- Q(b);N_GUARD::P(C)
- B(g);N_GUARD::S(A),XP(a)
- B(g);S_CUTQ(b)::P(C)
- P(c);N_GUARD,S_CUTQ(b)::S(A)
- P(e);S_CUTQ(b)::P(C)
- P(f);S_CUTQ(b)::P(C)
- P(h);S_CUTQ(b)::R(I)+B(E),XP(i)
- P(i);SBLOCK::B(G)
- P(j);S_CUTQ(b)::R(I)+B(E),XP(i)
- P(k);N_GUARD,S_CUTB(g)::S(H),XP(i)
- P(k);S_CUTQ(b)::R(I)+B(E),XP(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).