MESON Chess Problem Database
Problem Display
PID: 110045 (nK2bR2/1ppkP2n/8/2QPp3/4r1N1/B3p3/4P3/3R4 w - - 0 1)
Valle, Giovanni Batista
Fanfulla da Lodi, 1886
#2
9 + 9
| 4901 | Best Problems | 2008 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sxf8
- 2.Sf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Ra4
- Tries
- 1.Kxb7?
- threat
- 2.Qc6#
- 1...Rc4
- 2.Sxe5#
- 1...c6
- 2.Qd6#
- 2.Qxc6#
- 1...Rb4+!
- threat
- 1.Bb4?
- 1...Rxb4
- 2.Sxe5#
- 1...Sxf8
- 2.Sf6#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Rxb4
- 1.Ra1?
- 1...Sxf8
- 2.Sf6#
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Sxf8
- 1.Rb1?
- 1...Sxf8
- 2.Sf6#
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Sxf8
- 1.Rc1?
- 1...Sxf8
- 2.Sf6#
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Sxf8
- 1.Re1?
- 1...Sxf8
- 2.Sf6#
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Sxf8
- 1.Rdf1?
- 1...Sxf8
- 2.Sf6#
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Sxf8
- 1.Rg1?
- 1...Sxf8
- 2.Sf6#
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Sxf8
- 1.Rh1?
- 1...Sxf8
- 2.Sf6#
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Sxf8
- 1.Rd3?
- 1...Sxf8
- 2.Sf6#
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Sxf8
- 1.Rg8?
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Ra4
- 1.Rh8?
- 1...Ra4
- 2.Sxe5#
- 1...Rb4
- 2.Sxe5#
- 1...Rc4
- 2.Sxe5#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.Qd6#
- 1...Rxg4!
- 1...Ra4
- 1.Kxb7?
- Keys
- 1.Qc4!
- 1...Rxc4
- 2.Sxe5#
- 1...Rxg4
- 2.Qxg4#
- 1...Sxf8
- 2.Sf6#
- 1...c5
- 2.dxc5 ep#
- 1...Rd4
- 2.Sxe5#
- 1...Rf4
- 2.Sxe5#
- 1...Bh5
- 2.Rd8#
- 1...Bg6
- 2.Rd8#
- 1...Bf7
- 2.Rd8#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sb6
- 2.Qxc7#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...c6
- 2.dxc6#
- 1...Rxc4
- 1.Qc4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD,XR(I)::S(D)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Tries
- Try
- K(H);P-FLIGHT,XP(d)
- Threat
- QAB1(E)
- Vars
- R(b);N_GUARD::S(D),XP(c)
- Refutation
- R(b);CHECK
- Try
- B(C);
- Vars
- R(b);N_GUARD,XB(C)::S(D),XP(c)
- S(g);N_GUARD,XR(I)::S(D)
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- R(A);
- Vars
- S(g);N_GUARD,XR(I)::S(D)
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- R(A);
- Vars
- S(g);N_GUARD,XR(I)::S(D)
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- R(A);
- Vars
- S(g);N_GUARD,XR(I)::S(D)
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- R(A);
- Vars
- S(g);N_GUARD,XR(I)::S(D)
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- R(A);
- Vars
- S(g);N_GUARD,XR(I)::S(D)
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- R(A);
- Vars
- S(g);N_GUARD,XR(I)::S(D)
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- R(A);
- Vars
- S(g);N_GUARD,XR(I)::S(D)
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- R(A);
- Vars
- S(g);N_GUARD,XR(I)::S(D)
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- R(I);
- Vars
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- R(I);
- Vars
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);N_GUARD::QAR1(E)
- Refutation
- R(b);XS(D)
- Try
- Actual
- Q(E);
- Vars
- R(b);N_GUARD,XQ(E)::S(D),XP(c)
- R(b);OGATE,XS(D)::QAB(E),XR(b)
- S(g);N_GUARD,XR(I)::S(D)
- P(e);OGATE::R(A)+P(F)DCHECK,XP(e),EP
- R(b);N_GUARD::S(D),XP(c)
- B(i);OGATE::R1(I)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- S(h);N_GUARD::QAR1(E),XP(e)
- P(d);N_GUARD::QAB1(E)
- P(e);OGATE::R(A)+P(F)DCHECK,XP(e)
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).