MESON Chess Problem Database
Problem Display
PID: 202289 (2Q4b/7b/Bp4p1/1p4P1/NPPk1B1p/3p1K2/8/2rR4 w - - 0 1)
Belli, Nicolo
L'Alfiere di Re, 1923
#2
9 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxc4
- 2.Qd7#
- 2.Qd8#
- 1...Be5
- 2.Be3#
- 1...d2
- 2.Rxd2#
- 1...bxa4
- 2.Qxh8#
- 1...bxc4
- 2.Qd7#
- 2.Qd8#
- 1...Rxc4
- Tries
- 1.Bg3?
- threat
- 2.Qg4#
- 1...Rxc4
- 2.Qd7#
- 2.Qd8#
- 1...bxa4
- 2.Qxh8#
- 1...bxc4
- 2.Qd7#
- 2.Qd8#
- 1...d2
- 2.Rxd2#
- 1...Be5
- 2.Bf2#
- 1...hxg3!
- threat
- 1.Bb8?
- threat
- 2.Qg4#
- 1...Rxc4
- 2.Qd7#
- 2.Qd8#
- 1...bxa4
- 2.Qxh8#
- 1...bxc4
- 2.Qd7#
- 2.Qd8#
- 1...d2
- 2.Rxd2#
- 1...Be5!
- threat
- 1.Bxb5?
- threat
- 2.Qd7#
- 2.Qd8#
- 2.Qxh8#
- 1...Rxc4
- 2.Qd7#
- 2.Qxc4#
- 2.Qd8#
- 1...d2
- 2.Rxd2#
- 2.Qd7#
- 2.Qd8#
- 1...Be5
- 2.Be3#
- 1...Bf6
- 2.Qd7#
- 1...Bg7
- 2.Qd7#
- 2.Qd8#
- 1...Bg8!
- threat
- 1.Rxc1?
- threat
- 2.Qd7#
- 2.Qd8#
- 2.Qxh8#
- 1...bxc4
- 2.Qd7#
- 2.Qxc4#
- 2.Qd8#
- 1...d2
- 2.Qd7#
- 2.Qd8#
- 1...Be5
- 2.Be3#
- 1...Bf6
- 2.Qd7#
- 1...Bg7
- 2.Qd7#
- 2.Qd8#
- 1...Bg8!
- threat
- 1.Qe6?
- threat
- 2.Be3#
- 2.Qd5#
- 2.Qe4#
- 1...Rxc4
- 2.Be3#
- 2.Qd7#
- 2.Qe4#
- 2.Qd6#
- 1...bxc4
- 2.Be3#
- 2.Qd7#
- 2.Qe4#
- 2.Qd6#
- 1...d2
- 2.Rxd2#
- 2.Qd5#
- 2.Qe4#
- 1...Bg8
- 2.Be3#
- 2.Qe4#
- 1...Be5
- 2.Be3#
- 2.Bxe5#
- 2.Qd5#
- 1...bxa4!
- threat
- 1.Qc6?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Rxc4
- 2.Qe4#
- 2.Qd7#
- 2.Qd6#
- 1...bxc4
- 2.Qe4#
- 2.Qd7#
- 2.Qd6#
- 1...Bg8
- 2.Qe4#
- 1...bxa4!
- threat
- 1.Qc7?
- threat
- 2.Be3#
- 1...Rxc4
- 2.Qd6#
- 2.Qd8#
- 2.Qd7#
- 1...bxc4
- 2.Qd6#
- 2.Qd8#
- 2.Qd7#
- 1...d2
- 2.Rxd2#
- 1...bxa4!
- threat
- 1.Qa8?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Rxc4
- 2.Qe4#
- 2.Qd8#
- 1...bxa4
- 2.Qxh8#
- 1...bxc4
- 2.Qe4#
- 2.Qd8#
- 1...Bg8
- 2.Qe4#
- 1...Kxc4!
- threat
- 1.Qg8?
- threat
- 2.Qd5#
- 1...Rxc4
- 2.Qd8#
- 1...bxa4
- 2.Qxh8#
- 1...bxc4
- 2.Qd8#
- 1...Bxg8!
- threat
- 1.Bg3?
- Keys
- 1.Bh2!
- threat
- 2.Qg4#
- 1...Rxc4
- 2.Qd7#
- 2.Qd8#
- 1...bxa4
- 2.Qxh8#
- 1...bxc4
- 2.Qd7#
- 2.Qd8#
- 1...d2
- 2.Rxd2#
- 1...Be5
- 2.Bg1#
- threat
- 1.Bh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(i);SBLOCK::B(F)
- P(b);OGATEB::R(A),XP(b)
- P(e);XS(C)::QAB(I),XB(i)
- Tries
- Try
- B(F);
- Threat
- QAR(I)
- Vars
- P(e);XS(C)::QAB(I),XB(i)
- P(b);OGATEB::R(A),XP(b)
- B(i);SBLOCK::B(F)
- Refutation
- P(d);XB(F)
- Try
- B(F);
- Threat
- QAR(I)
- Vars
- P(e);XS(C)::QAB(I),XB(i)
- P(b);OGATEB::R(A),XP(b)
- Refutation
- B(i);
- Try
- B(H);XP(e)
- Threat
- DUALS(3)
- Vars
- B(i);SBLOCK::B(F)
- B(i);::QAR(I)
- Refutation
- B(h);
- Try
- R(A);N_PINP(b),XR(a)
- Threat
- DUALS(3)
- Vars
- B(i);SBLOCK::B(F)
- B(i);::QAR(I)
- Refutation
- B(h);
- Try
- Q(I);
- Threat
- DUALS(3)
- Refutation
- P(e);XS(C)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(h);::QAR1(I)
- Refutation
- P(e);XS(C)
- Try
- Q(I);
- Threat
- B(F)
- Vars
- P(b);OGATEB::R(A),XP(b)
- Refutation
- P(e);XS(C)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- P(e);XS(C)::QAB(I),XB(i)
- B(h);::QAR1(I)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT,P_SPINP(e),XP(E)
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- R(a);SBLOCK,XP(E)::QAR(I)
- P(e);XS(C)::QAB(I),XB(i)
- P(e);XP(E)::QAR(I)
- Refutation
- B(h);XQ(I)
- Try
- Actual
- B(F);
- Threat
- QAR(I)
- Vars
- P(e);XS(C)::QAB(I),XB(i)
- P(b);OGATEB::R(A),XP(b)
- B(i);SBLOCK::B(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).