MESON Chess Problem Database
Problem Display
PID: 137418 (RNkBR3/1N3p2/p1np4/P3b3/3P1p2/5P2/B7/1QK5 w - - 0 1)
Ellerman, Arnoldo
L'Italia Scacchistica, 1936
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Bxd4
- 2.Sxd6#
- 1...Bf6
- 2.Sxd6#
- 1...Bg7
- 2.Sxd6#
- 1...Bh8
- 2.Sxd6#
- 1...Sxa5
- 2.Bxa5#
- 1...f5
- 2.Be6#
- 1...f6
- 2.Be6#
- 1...Bxd4
- Tries
- 1.Sc5?
- threat
- 2.Sxc6#
- 2.Qf5#
- 2.Qb7#
- 1...Sxd4
- 2.Sbxa6#
- 2.Sc6#
- 2.Sbd7#
- 2.Bb6#
- 2.Qb7#
- 1...Sxa5
- 2.Sbxa6#
- 2.Sc6#
- 2.Sbd7#
- 2.Bxa5#
- 2.Bb6#
- 2.Qf5#
- 1...Sxb8
- 2.Bb6#
- 2.Rxb8#
- 2.Qf5#
- 2.Qb7#
- 2.Qxb8#
- 1...Sxd8
- 2.Sbxa6#
- 2.Qb7#
- 1...Sb4
- 2.Sbxa6#
- 2.Sc6#
- 2.Sbd7#
- 2.Bb6#
- 2.Qf5#
- 1...Sa7
- 2.Sbxa6#
- 2.Sc6#
- 2.Sbd7#
- 2.Bb6#
- 2.Qf5#
- 2.Qb7#
- 1...Se7
- 2.Sbxa6#
- 2.Sc6#
- 2.Sbd7#
- 2.Bb6#
- 2.Qb7#
- 1...d5
- 2.Qf5#
- 2.Qb7#
- 1...f5
- 2.Sxc6#
- 2.Be6#
- 2.Qxf5#
- 2.Qb7#
- 1...dxc5!
- threat
- 1.Bh4+?
- 1...Kc7
- 2.Qb6#
- 1...Sd8!
- 1...Kc7
- 1.Bg5+?
- 1...Kc7
- 2.Qb6#
- 1...Sd8!
- 1...Kc7
- 1.Bf6+?
- 1...Kc7
- 2.Qb6#
- 1...Sd8!
- 1...Kc7
- 1.Bc7+?
- 1...Kxc7
- 2.Qb6#
- 1...Sd8!
- 1...Kxc7
- 1.Be7+?
- 1...Kc7
- 2.Qb6#
- 1...Sd8!
- 1...Kc7
- 1.Re7?
- threat
- 2.Sxc6#
- 2.Rc7#
- 2.Qf5#
- 1...Sxd4
- 2.Sxa6#
- 2.Sc6#
- 2.Sd7#
- 2.Rc7#
- 1...Sxa5
- 2.Sxa6#
- 2.Sc6#
- 2.Sd7#
- 2.Rc7#
- 2.Qf5#
- 1...Sxb8
- 2.Rc7#
- 2.Qc2#
- 2.Qf5#
- 1...Sxd8
- 2.Sxa6#
- 2.Sc6#
- 1...Sb4
- 2.Sxa6#
- 2.Sc6#
- 2.Rc7#
- 2.Qf5#
- 1...Sa7
- 2.Sxa6#
- 2.Sc6#
- 2.Sd7#
- 2.Rc7#
- 2.Qf5#
- 1...d5
- 2.Qf5#
- 1...f5
- 2.Sxc6#
- 2.Be6#
- 2.Rc7#
- 2.Qxf5#
- 1...Sxe7!
- threat
- 1.Qc2?
- threat
- 2.Qxc6#
- 1...Kxb7
- 2.Qxc6#
- 1...d5!
- threat
- 1.Qe4?
- threat
- 2.Qxc6#
- 1...Kxb7
- 2.Qxc6#
- 1...Sxd4
- 2.Bb6#
- 1...Sxa5
- 2.Bxa5#
- 2.Bb6#
- 1...Sxb8
- 2.Qc6#
- 1...Sxd8
- 2.Qc6#
- 1...Sb4
- 2.Bb6#
- 1...Sa7
- 2.Bb6#
- 1...Se7
- 2.Bb6#
- 1...d5!
- threat
- 1.Qb6?
- threat
- 2.Qc7#
- 2.Qxc6#
- 1...Sxd4
- 2.Bh4#
- 2.Bg5#
- 2.Bf6#
- 2.Bc7#
- 2.Be7#
- 2.Qc7#
- 1...Sxa5
- 2.Bh4#
- 2.Bg5#
- 2.Bf6#
- 2.Bc7#
- 2.Be7#
- 2.Qc7#
- 1...Sxb8
- 2.Qc7#
- 2.Qc6#
- 1...Sxd8
- 2.Rxd8#
- 2.Qc6#
- 1...Sb4
- 2.Bh4#
- 2.Bg5#
- 2.Bf6#
- 2.Bc7#
- 2.Be7#
- 2.Qc7#
- 1...Sa7
- 2.Bh4#
- 2.Bg5#
- 2.Bf6#
- 2.Bc7#
- 2.Be7#
- 2.Qc7#
- 1...Se7
- 2.Bc7#
- 2.Bxe7#
- 2.Qc7#
- 1...d5!
- threat
- 1.Sc5?
- Keys
- 1.Bd5!
- 1...Bxd4
- 2.Sxd6#
- 1...Sxd4
- 2.Bb6#
- 1...Sxa5
- 2.Bxa5#
- 2.Bb6#
- 2.Qf5#
- 1...Sxb8
- 2.Qf5#
- 1...Sxd8
- 2.Qc2#
- 1...Bf6
- 2.Sxd6#
- 1...Bg7
- 2.Sxd6#
- 1...Bh8
- 2.Sxd6#
- 1...Sb4
- 2.Bb6#
- 2.Qf5#
- 1...Sa7
- 2.Bb6#
- 2.Qf5#
- 1...Se7
- 2.Bb6#
- 1...f5
- 2.Be6#
- 1...f6
- 2.Be6#
- 1...Bxd4
- 1.Bd5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- B(b);N_GUARD,XP(E)::S(G),XP(e)
- B(b);N_GUARD::S(G),XP(e)
- S(d);OGATE,XP(F)::R(K)+B(J),XS(d)
- P(f);N_GUARD::B(C)
- Tries
- Try
- S(G);
- Threat
- DUALS(3)
- Refutation
- P(e);XS(G)
- Try
- B(J);CHECK
- Vars
- K(g);P-FLIGHT::QAB1(A)
- Refutation
- S(d);P_SPINS(d)
- Try
- B(J);CHECK
- Vars
- K(g);P-FLIGHT::QAB1(A)
- Refutation
- S(d);P_SPINS(d)
- Try
- B(J);CHECK
- Vars
- K(g);P-FLIGHT::QAB1(A)
- Refutation
- S(d);P_SPINS(d)
- Try
- B(J);CHECK
- Vars
- K(g);P-FLIGHT,XB(J)::QAB1(A)
- Refutation
- S(d);P_SPINS(d)
- Try
- B(J);CHECK
- Vars
- K(g);P-FLIGHT::QAB1(A)
- Refutation
- S(d);P_SPINS(d)
- Try
- R(K);
- Threat
- DUALS(3)
- Vars
- P(e);::QAB(A)
- Refutation
- S(d);XR(K)
- Try
- Q(A);P_PINS(d)
- Threat
- QAR2(A),XS(d)
- Vars
- K(g);N_SPINS(d),S_FLIGHT,XS(G)::QAB1(A),XS(d)
- Refutation
- P(e);
- Try
- Q(A);
- Threat
- QAR2(A),XS(d)
- Vars
- K(g);P_SPINS(d),S_FLIGHT,XS(G)::QAB1(A),XS(d)
- S(d);N_GUARD,XP(E)::R(K)+B(J)
- S(d);P_SPINS(d),XS(I)::QAR2(A)
- S(d);P_SPINS(d),XB(J)::QAR2(A)
- S(d);N_GUARD::R(K)+B(J)
- Refutation
- P(e);
- Try
- Q(A);
- Threat
- DUALS(2)
- Refutation
- P(e);
- Try
- Actual
- B(C);
- Vars
- B(b);N_GUARD,XP(E)::S(G),XP(e)
- S(d);N_GUARD,XP(E)::R(K)+B(J)
- S(d);P_SPINS(d),XS(I)::QAB(A)
- S(d);OGATEB,P_SPINS(d),XB(J)::QAR(A)
- B(b);N_GUARD::S(G),XP(e)
- S(d);N_GUARD::R(K)+B(J)
- P(f);N_GUARD::B(C)
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).