MESON Chess Problem Database
Problem Display
PID: 263354 (3k4/1Pbpp1N1/8/2Q1N3/p7/r7/b5p1/2B3K1 w - - 0 1)
Somma, Francesco
L'Italia Scacchistica, 1929
#2
6 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rb3
- 2.Sf7#
- 1...Bb1
- 2.Sf7#
- 1...Bf7
- 2.Sxf7#
- 1...Ba5
- 2.Qxa5#
- 2.Qc8#
- 2.b8Q#
- 2.b8R#
- 1...Bxe5
- 2.Qc8#
- 1...Bb6
- 2.Qxb6#
- 2.b8Q#
- 2.b8R#
- 1...Bd6
- 2.Qc8#
- 1...Bb8
- 2.Qc8#
- 1...e6
- 2.Sf7#
- 2.Bg5#
- 2.Qf8#
- 1...Rb3
- Tries
- 1.Sf5?
- threat
- 2.Qxe7#
- 1...Ke8
- 2.Qxe7#
- 1...Bxe5
- 2.Qc8#
- 1...Ba5
- 2.Qc8#
- 2.b8Q#
- 2.b8R#
- 1...Bb6
- 2.b8Q#
- 2.b8R#
- 1...Bd6
- 2.Qc8#
- 1...Bb8
- 2.Qc8#
- 1...e6
- 2.Qe7#
- 2.Qf8#
- 1...d6!
- threat
- 1.Bxa3?
- threat
- 2.Qxe7#
- 1...Bxe5
- 2.Qc8#
- 1...Ba5
- 2.Qxa5#
- 2.Qc8#
- 2.b8Q#
- 2.b8R#
- 1...Bb6
- 2.Qxb6#
- 2.b8Q#
- 2.b8R#
- 1...Bd6
- 2.Qc8#
- 1...Bb8
- 2.Qc8#
- 1...e6
- 2.Sf7#
- 2.Qe7#
- 2.Qf8#
- 1...d6!
- threat
- 1.Bg5?
- threat
- 2.Bxe7#
- 2.Qxe7#
- 1...Bxe5
- 2.Bxe7#
- 2.Qc8#
- 1...Ba5
- 2.Bxe7#
- 2.Qxa5#
- 2.Qc8#
- 2.b8Q#
- 2.b8R#
- 1...Bb6
- 2.Bxe7#
- 2.Qxb6#
- 2.b8Q#
- 2.b8R#
- 1...Bd6
- 2.Qc8#
- 1...Bb8
- 2.Bxe7#
- 2.Qc8#
- 1...d6!
- threat
- 1.Qb6?
- threat
- 2.b8Q#
- 2.b8R#
- 1...e6
- 2.Bg5#
- 1...d6
- 2.b8Q#
- 2.b8R#
- 1...Rb3
- 2.Sf7#
- 2.b8Q#
- 2.b8R#
- 1...Rc3
- 2.b8Q#
- 2.b8R#
- 1...Rd3
- 2.b8Q#
- 2.b8R#
- 1...Re3
- 2.b8Q#
- 2.b8R#
- 1...Rf3
- 2.b8Q#
- 2.b8R#
- 1...Rg3
- 2.b8Q#
- 2.b8R#
- 1...Rh3
- 2.b8Q#
- 2.b8R#
- 1...Bb1
- 2.Sf7#
- 2.b8Q#
- 2.b8R#
- 1...Bb3
- 2.b8Q#
- 2.b8R#
- 1...Bc4
- 2.b8Q#
- 2.b8R#
- 1...Bd5
- 2.b8Q#
- 2.b8R#
- 1...Be6
- 2.b8Q#
- 2.b8R#
- 1...Bf7
- 2.Sxf7#
- 2.b8Q#
- 2.b8R#
- 1...Bg8
- 2.b8Q#
- 2.b8R#
- 1...d5
- 2.b8Q#
- 2.b8R#
- 1...Bxb6+!
- threat
- 1.Qd6?
- threat
- 2.Sc6#
- 2.Qxd7#
- 1...Bb6+
- 2.Qxb6#
- 1...exd6
- 2.Bg5#
- 1...Rc3
- 2.Qxd7#
- 1...Rd3
- 2.Sc6#
- 1...Bd5
- 2.Qxd7#
- 1...Be6
- 2.Sc6#
- 1...Bxd6!
- threat
- 1.Sf5?
- Keys
- 1.Qa5!
- threat
- 2.b8Q#
- 2.b8R#
- 1...Bb6+
- 2.Qxb6#
- 1...e6
- 2.Bg5#
- 1...d6
- 2.b8Q#
- 2.b8R#
- 1...Rb3
- 2.Sf7#
- 1...Rc3
- 2.b8Q#
- 2.b8R#
- 1...Rd3
- 2.b8Q#
- 2.b8R#
- 1...Re3
- 2.b8Q#
- 2.b8R#
- 1...Rf3
- 2.b8Q#
- 2.b8R#
- 1...Rg3
- 2.b8Q#
- 2.b8R#
- 1...Rh3
- 2.b8Q#
- 2.b8R#
- 1...Bb1
- 2.Sf7#
- 2.b8Q#
- 2.b8R#
- 1...Bb3
- 2.b8Q#
- 2.b8R#
- 1...Bc4
- 2.b8Q#
- 2.b8R#
- 1...Bd5
- 2.b8Q#
- 2.b8R#
- 1...Be6
- 2.b8Q#
- 2.b8R#
- 1...Bf7
- 2.Sxf7#
- 2.b8Q#
- 2.b8R#
- 1...Bg8
- 2.b8Q#
- 2.b8R#
- 1...d5
- 2.b8Q#
- 2.b8R#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(c);S_CUTB(a)::S(D)
- B(a);N_GUARD::S(D)
- B(a);N_GUARD::S(D),XB(a)
- B(e);OGATE,XS(D)::QAR1(C)
- B(e);OGATE::QAR1(C)
- Tries
- Try
- S(F);
- Threat
- QAB1(C),XP(g)
- Vars
- K(h);P-FLIGHT::QAR1(C),XP(g)
- B(e);OGATE,XS(D)::QAR1(C)
- B(e);N_GUARD,P_PINQ(C)::P=Q
- B(e);OGATE::QAR1(C)
- Refutation
- P(f);
- Try
- B(A);XR(c)
- Threat
- QAB1(C),XP(g)
- Vars
- B(e);OGATE,XS(D)::QAR1(C)
- B(e);OGATE::QAR1(C)
- Refutation
- P(f);
- Try
- B(A);P_PINP(g)
- Threat
- DUALS(2)
- Vars
- B(e);OGATE::QAR1(C)
- Refutation
- P(f);
- Try
- Q(C);P_PINB(e)
- Threat
- P=Q
- Vars
- P(g);OGATEB::B(A)
- P(f);::P=Q
- R(c);::P=Q
- B(a);::P=Q
- Refutation
- B(e);CHECK,N_SPINB(e),XQ(C)
- Try
- Q(C);P_PINP(f)
- Threat
- DUALS(2)
- Vars
- B(e);CHECK,OGATEB::QAB(C),XB(e)
- P(g);N_SPINP(f),OGATEB,XQ(C)::B(A)
- R(c);::QAR1(C),XP(f)
- R(c);::S(D)
- B(a);::QAR1(C),XP(f)
- B(a);::S(D)
- Refutation
- B(e);N_SPINP(f),XQ(C)
- Try
- Actual
- Q(C);P_PINB(e)
- Threat
- P=Q
- Vars
- B(e);CHECK,OGATEB::QAB(C),XB(e)
- P(g);OGATEB::B(A)
- P(f);::P=Q
- R(c);S_CUTB(a)::S(D)
- R(c);::P=Q
- B(a);::P=Q
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).