MESON Chess Problem Database
Problem Display
PID: 30748 (N3r3/8/2N1n3/1P1kP2p/r1nP3K/B1P2P2/8/8 w - - 0 1)
Valle, Giovanni Batista
La Strategie, 1875
#2
9 + 6
| 2638 | White to Play | 1913 |
| 6169 | Dal classico agli albori del moderno compositori scacchisti | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Rxa3
- 2.Sb4#
- 1...Rb4
- 2.Sxb4#
- 1...Ra5
- 2.Sb4#
- 1...Ra6
- 2.Sb4#
- 1...Ra7
- 2.Sb4#
- 1...Raxa8
- 2.Sb4#
- 1...Re7
- 2.Sxe7#
- 1...Rexa8
- 2.Se7#
- 1...Rb8
- 2.Se7#
- 1...Rc8
- 2.Se7#
- 1...Rd8
- 2.Se7#
- 1...Rf8
- 2.Se7#
- 1...Rg8
- 2.Se7#
- 1...Rh8
- 2.Se7#
- 1...Sb2
- 2.Sb6#
- 1...Sd2
- 2.Sb6#
- 1...Sxa3
- 2.Sb6#
- 1...Se3
- 2.Sb6#
- 1...Sa5
- 2.Sb6#
- 1...Sxe5
- 2.Sb6#
- 1...Sb6
- 2.Sxb6#
- 1...Sd6
- 2.Sb6#
- 1...Sxd4
- 2.Sc7#
- 1...Sf4
- 2.Sc7#
- 1...Sc5
- 2.Sc7#
- 1...Sg5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sd8
- 2.Sc7#
- 1...Sf8
- 2.Sc7#
- 1...Rxa3
- Tries
- 1.Bc5?
- 1...Raxa8
- 2.Sb4#
- 1...Rexa8
- 2.Se7#
- 1...Sxe5
- 2.Sb6#
- 1...Sxc5
- 2.Sc7#
- 1...Sb2
- 2.Sb6#
- 1...Sd2
- 2.Sb6#
- 1...Sa3
- 2.Sb6#
- 1...Se3
- 2.Sb6#
- 1...Sa5
- 2.Sb6#
- 1...Sb6
- 2.Sxb6#
- 1...Sd6
- 2.Sb6#
- 1...Sf4
- 2.Sc7#
- 1...Sg5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sd8
- 2.Sc7#
- 1...Sf8
- 2.Sc7#
- 1...Ra1
- 2.Sb4#
- 1...Ra2
- 2.Sb4#
- 1...Ra3
- 2.Sb4#
- 1...Rb4
- 2.Sxb4#
- 1...Ra5
- 2.Sb4#
- 1...Ra6
- 2.Sb4#
- 1...Ra7
- 2.Sb4#
- 1...Re7
- 2.Sxe7#
- 1...Rb8
- 2.Se7#
- 1...Rc8
- 2.Se7#
- 1...Rd8
- 2.Se7#
- 1...Rf8
- 2.Se7#
- 1...Rg8
- 2.Se7#
- 1...Rh8
- 2.Se7#
- 1...Sxd4!
- 1...Raxa8
- 1.Bd6?
- 1...Raxa8
- 2.Sb4#
- 1...Rexa8
- 2.Se7#
- 1...Sxd6
- 2.Sb6#
- 1...Sxd4
- 2.Sc7#
- 1...Sb2
- 2.Sb6#
- 1...Sd2
- 2.Sb6#
- 1...Sa3
- 2.Sb6#
- 1...Se3
- 2.Sb6#
- 1...Sa5
- 2.Sb6#
- 1...Sb6
- 2.Sxb6#
- 1...Sf4
- 2.Sc7#
- 1...Sc5
- 2.Sc7#
- 1...Sg5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sd8
- 2.Sc7#
- 1...Sf8
- 2.Sc7#
- 1...Ra1
- 2.Sb4#
- 1...Ra2
- 2.Sb4#
- 1...Ra3
- 2.Sb4#
- 1...Rb4
- 2.Sxb4#
- 1...Ra5
- 2.Sb4#
- 1...Ra6
- 2.Sb4#
- 1...Ra7
- 2.Sb4#
- 1...Re7
- 2.Sxe7#
- 1...Rb8
- 2.Se7#
- 1...Rc8
- 2.Se7#
- 1...Rd8
- 2.Se7#
- 1...Rf8
- 2.Se7#
- 1...Rg8
- 2.Se7#
- 1...Rh8
- 2.Se7#
- 1...Sxe5!
- 1...Raxa8
- 1.Bc5?
- Keys
- 1.Bf8!
- 1...Raxa8
- 2.Sb4#
- 1...Rexa8
- 2.Se7#
- 1...Rxf8
- 2.Se7#
- 1...Sxe5
- 2.Sb6#
- 1...Sxd4
- 2.Sc7#
- 1...Sxf8
- 2.Sc7#
- 1...Sb2
- 2.Sb6#
- 1...Sd2
- 2.Sb6#
- 1...Sa3
- 2.Sb6#
- 1...Se3
- 2.Sb6#
- 1...Sa5
- 2.Sb6#
- 1...Sb6
- 2.Sxb6#
- 1...Sd6
- 2.Sb6#
- 1...Sf4
- 2.Sc7#
- 1...Sc5
- 2.Sc7#
- 1...Sg5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sd8
- 2.Sc7#
- 1...Ra1
- 2.Sb4#
- 1...Ra2
- 2.Sb4#
- 1...Ra3
- 2.Sb4#
- 1...Rb4
- 2.Sxb4#
- 1...Ra5
- 2.Sb4#
- 1...Ra6
- 2.Sb4#
- 1...Ra7
- 2.Sb4#
- 1...Re7
- 2.Sxe7#
- 1...Rb8
- 2.Se7#
- 1...Rc8
- 2.Se7#
- 1...Rd8
- 2.Se7#
- 1...Raxa8
- 1.Bf8!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- R(a);N_GUARD,XB(A)::S(H)
- R(a);N_GUARD::S(H),XR(a)
- R(a);N_GUARD::S(H)
- R(a);N_GUARD,XS(I)::S(H)
- R(f);N_GUARD::S(H),XR(f)
- R(f);N_GUARD,XS(I)::S(H)
- R(f);N_GUARD::S(H)
- S(b);N_GUARD,P_PINP(D)::S(I)
- S(b);N_GUARD,P_PINP(D),XB(A)::S(I)
- S(b);N_GUARD,P_PINP(D),XP(G)::S(I)
- S(b);N_GUARD,P_PINP(D)::S(I),XS(b)
- S(e);N_GUARD,XP(D)::S(I)
- S(e);N_GUARD::S(I)
- S(e);N_GUARD::S(I),XS(e)
- Tries
- Try
- B(A);
- Vars
- R(a);N_GUARD,XS(I)::S(H)
- R(f);N_GUARD,XS(I)::S(H)
- S(b);N_GUARD,P_PINP(D),XP(G)::S(I)
- S(e);N_GUARD,XB(A)::S(I)
- S(b);N_GUARD,P_PINP(D)::S(I)
- S(b);N_GUARD,P_PINP(D)::S(I),XS(b)
- S(e);N_GUARD::S(I)
- S(e);N_GUARD::S(I),XS(e)
- R(a);N_GUARD::S(H)
- R(a);N_GUARD::S(H),XR(a)
- R(f);N_GUARD::S(H),XR(f)
- R(f);N_GUARD::S(H)
- Refutation
- S(e);XP(D)
- Try
- B(A);
- Vars
- R(a);N_GUARD,XS(I)::S(H)
- R(f);N_GUARD,XS(I)::S(H)
- S(b);N_GUARD,P_PINP(D),XB(A)::S(I)
- S(e);N_GUARD,XP(D)::S(I)
- S(b);N_GUARD,P_PINP(D)::S(I)
- S(b);N_GUARD,P_PINP(D)::S(I),XS(b)
- S(e);N_GUARD::S(I)
- S(e);N_GUARD::S(I),XS(e)
- R(a);N_GUARD::S(H)
- R(a);N_GUARD::S(H),XR(a)
- R(f);N_GUARD::S(H),XR(f)
- R(f);N_GUARD::S(H)
- Refutation
- S(b);P_PINP(D),XP(G)
- Try
- Actual
- B(A);
- Vars
- R(a);N_GUARD,XS(I)::S(H)
- R(f);N_GUARD,XS(I)::S(H)
- R(f);N_GUARD,XB(A)::S(H)
- S(b);N_GUARD,P_PINP(D),XP(G)::S(I)
- S(e);N_GUARD,XP(D)::S(I)
- S(e);N_GUARD,XB(A)::S(I)
- S(b);N_GUARD,P_PINP(D)::S(I)
- S(b);N_GUARD,P_PINP(D)::S(I),XS(b)
- S(e);N_GUARD::S(I)
- S(e);N_GUARD::S(I),XS(e)
- R(a);N_GUARD::S(H)
- R(a);N_GUARD::S(H),XR(a)
- R(f);N_GUARD::S(H),XR(f)
- R(f);N_GUARD::S(H)
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).