MESON Chess Problem Database
Problem Display
PID: 231222 (Q7/6B1/1P2p3/8/5kPK/3pr2P/3P4/6N1 w - - 0 1)
Somma, Francesco
3rd Prize=, L'Italia Scacchistica, 1927
#2
8 + 4
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 2.Qa4#
- 1...Rg3
- 2.Qa4#
- 1...Rxh3+
- 2.Sxh3#
- 1...Re4
- 2.Qf8#
- 1...Re5
- 2.Qf3#
- 1...e5
- 2.Bh6#
- 1...Re1
- Tries
- 1.Ba1?
- 1...Rxh3+
- 2.Sxh3#
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 2.Qa4#
- 1...Rg3
- 2.Qa4#
- 1...Re4
- 2.Qf8#
- 1...Re5
- 2.Qf3#
- 1...e5!
- 1...Rxh3+
- 1.Bb2?
- 1...Rxh3+
- 2.Sxh3#
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 2.Qa4#
- 1...Rg3
- 2.Qa4#
- 1...Re4
- 2.Qf8#
- 1...Re5
- 2.Qf3#
- 1...e5!
- 1...Rxh3+
- 1.Bc3?
- 1...Rxh3+
- 2.Sxh3#
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 2.Qa4#
- 1...Rg3
- 2.Qa4#
- 1...Re4
- 2.Qf8#
- 1...Re5
- 2.Qf3#
- 1...e5!
- 1...Rxh3+
- 1.Bd4?
- threat
- 2.dxe3#
- 1...Rxh3+
- 2.Sxh3#
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 1...Re4
- 2.Qf8#
- 1...Re5
- 2.Qf3#
- 1...Rg3!
- threat
- 1.Be5+?
- 1...Rxe5
- 2.Qf3#
- 1...Kxe5!
- 1...Rxe5
- 1.Bf6?
- 1...Rxh3+
- 2.Sxh3#
- 1...e5
- 2.Bg5#
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 2.Qa4#
- 1...Rg3
- 2.Qa4#
- 1...Re5
- 2.Qf3#
- 1...Re4!
- 1...Rxh3+
- 1.Bh8?
- 1...Rxh3+
- 2.Sxh3#
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 2.Qa4#
- 1...Rg3
- 2.Qa4#
- 1...Re4
- 2.Qf8#
- 1...Re5
- 2.Qf3#
- 1...e5!
- 1...Rxh3+
- 1.Qh1?
- 1...Rxh3+
- 2.Sxh3#
- 1...Rf3
- 2.Qxf3#
- 1...e5
- 2.Bh6#
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Re4
- 2.Qf3#
- 2.Qh2#
- 1...Re5
- 2.Qf3#
- 1...Rg3!
- 1...Rxh3+
- 1.Qg2?
- 1...Rxh3+
- 2.Sxh3#
- 1...Rf3
- 2.Qxf3#
- 1...e5
- 2.Bh6#
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Re4
- 2.Qf1#
- 2.Qf3#
- 2.Qf2#
- 2.Qh2#
- 2.Qg3#
- 1...Re5
- 2.Qf3#
- 1...Rg3!
- 1...Rxh3+
- 1.Qd5?
- threat
- 2.Bh6#
- 1...Rxh3+
- 2.Sxh3#
- 1...Re5
- 2.Bxe5#
- 2.Qf3#
- 2.Qxe5#
- 1...exd5!
- threat
- 1.Qc6?
- 1...Rxh3+
- 2.Sxh3#
- 1...e5
- 2.Bh6#
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 2.Qa4#
- 2.Qc4#
- 1...Rg3
- 2.Qa4#
- 2.Qc4#
- 1...Re5
- 2.Qf3#
- 1...Re4!
- 1...Rxh3+
- 1.Qb7?
- 1...Rxh3+
- 2.Sxh3#
- 1...e5
- 2.Bh6#
- 1...Re1
- 2.Qf3#
- 1...Re2
- 2.Qf3#
- 1...Rf3
- 2.Qxf3#
- 1...Re4
- 2.Qf7#
- 1...Re5
- 2.Qf3#
- 1...Rg3!
- 1...Rxh3+
- 1.Qb8+?
- 1...Ke4
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...e5!
- 1...Ke4
- 1.Ba1?
- Keys
- 1.Sf3!
- threat
- 2.Bh6#
- 1...Rxf3
- 2.Qa4#
- 1...Re4
- 2.Qf8#
- 1...Re5
- 2.Bxe5#
- threat
- 1.Sf3!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- R(b);N_GUARD::QAR1(H)
- R(b);N_GUARD::QAR(H)
- R(b);CHECK,XP(C)::S(A),XR(b)
- R(b);SBLOCK::QAR(H)
- P(d);SBLOCK::B(G)
- Tries
- Try
- B(G);
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- R(b);N_GUARD::QAR1(H)
- R(b);N_GUARD::QAR(H)
- R(b);SBLOCK::QAR(H)
- Refutation
- P(d);
- Try
- B(G);
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- R(b);N_GUARD::QAR1(H)
- R(b);N_GUARD::QAR(H)
- R(b);SBLOCK::QAR(H)
- Refutation
- P(d);
- Try
- B(G);
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- R(b);N_GUARD::QAR1(H)
- R(b);N_GUARD::QAR(H)
- R(b);SBLOCK::QAR(H)
- Refutation
- P(d);
- Try
- B(G);
- Threat
- P(B),XR(b)
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- R(b);N_GUARD::QAR1(H)
- R(b);N_GUARD::QAR1(H),XR(b)
- R(b);SBLOCK::QAR(H)
- Refutation
- R(b);
- Try
- B(G);CHECK
- Vars
- R(b);SBLOCK,XB(G)::QAR1(H)
- Refutation
- K(c);S_FLIGHT,XB(G)
- Try
- B(G);
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- P(d);SBLOCK::B(G)
- R(b);N_GUARD::QAR1(H)
- R(b);N_GUARD::QAR(H)
- Refutation
- R(b);
- Try
- B(G);
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- R(b);N_GUARD::QAR1(H)
- R(b);N_GUARD::QAR(H)
- R(b);SBLOCK::QAR(H)
- Refutation
- P(d);
- Try
- Q(H);
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- R(b);N_GUARD::QAR1(H),XR(b)
- P(d);SBLOCK::B(G)
- R(b);N_GUARD::QAR1(H)
- Refutation
- R(b);
- Try
- Q(H);
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- R(b);N_GUARD::QAR1(H),XR(b)
- P(d);SBLOCK::B(G)
- R(b);N_GUARD::QAR1(H)
- Refutation
- R(b);
- Try
- Q(H);
- Threat
- B(G)
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- Refutation
- P(d);XQ(H)
- Try
- Q(H);
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- P(d);SBLOCK::B(G)
- R(b);N_GUARD::QAR1(H)
- Refutation
- R(b);
- Try
- Q(H);
- Vars
- R(b);CHECK,XP(C)::S(A),XR(b)
- P(d);SBLOCK::B(G)
- R(b);N_GUARD::QAR1(H)
- R(b);N_GUARD::QAR1(H),XR(b)
- R(b);SBLOCK::QAR(H)
- Refutation
- R(b);
- Try
- Q(H);CHECK
- Vars
- K(c);P-FLIGHT::QAR1(H)
- R(b);N_GUARD,P_SPINR(b)::QAB1(H),XR(b)
- Refutation
- P(d);P_SPINP(d)
- Try
- Actual
- S(A);
- Threat
- B(G)
- Vars
- R(b);N_GUARD,SBLOCK,XS(A)::QAR(H)
- R(b);SBLOCK::QAR(H)
- R(b);N_GUARD::B(G),XR(b)
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).