MESON Chess Problem Database
Problem Display
PID: 101330 (8/b1B5/R1nN1N2/p1pp4/1kpr4/p2p4/K2P4/3BQ3 w - - 0 1)
Beach, Lennox F
Good Companions, 1921
#2
8 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...c3
- 2.dxc3#
- 1...a4
- 2.Rxa4#
- 1...Re4
- Tries
- 1.Ka1?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...c3
- 2.dxc3#
- 1...a4
- 2.Rxa4#
- 1...a2!
- 1...Re4
- 1.Kb1?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...c3
- 2.dxc3#
- 1...a4
- 2.Rxa4#
- 1...a2+!
- 1...Re4
- 1.Bb3?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...c3
- 2.dxc3#
- 1...a4
- 2.Rxa4#
- 1...cxb3+!
- 1...Re4
- 1.Bb6?
- 1...Bxb6
- 2.Rxb6#
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...c3
- 2.dxc3#
- 1...a4
- 2.Rxa4#
- 1...Bb8!
- 1...Bxb6
- 1.Bd8?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...c3
- 2.dxc3#
- 1...a4
- 2.Rxa4#
- 1...Sxd8!
- 1...Re4
- 1.Rxc6?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...c3
- 2.dxc3#
- 1...a4!
- 1...Re4
- 1.Rxa7?
- threat
- 2.Rb7#
- 1...Sd8
- 2.Bxa5#
- 1...Sxa7!
- threat
- 1.Qf2?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...a4
- 2.Rxa4#
- 1...c3!
- 1...Re4
- 1.Qg3?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...a4
- 2.Rxa4#
- 1...c3!
- 1...Re4
- 1.Qf1?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...a4
- 2.Rxa4#
- 1...c3!
- 1...Re4
- 1.Qg1?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...a4
- 2.Rxa4#
- 1...c3!
- 1...Re4
- 1.Qh1?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...a4
- 2.Rxa4#
- 1...c3!
- 1...Re4
- 1.Qe3?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...a4
- 2.Rxa4#
- 1...c3!
- 1...Re4
- 1.Qe4?
- 1...Rxe4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...c3
- 2.Sxd5#
- 1...a4
- 2.Rxa4#
- 1...dxe4!
- 1...Rxe4
- 1.Qe5?
- 1...Sxe5
- 2.Bxa5#
- 1...Re4
- 2.Sxd5#
- 2.Qc3#
- 1...Rf4
- 2.Sxd5#
- 2.Qc3#
- 1...Rg4
- 2.Sxd5#
- 2.Qc3#
- 1...Rh4
- 2.Sxd5#
- 2.Qc3#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...a4
- 2.Rxa4#
- 1...c3!
- 1...Sxe5
- 1.Qe6?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...a4
- 2.Rxa4#
- 1...c3!
- 1...Re4
- 1.Qe7?
- 1...Sxe7
- 2.Bxa5#
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...a4
- 2.Rxa4#
- 1...c3!
- 1...Sxe7
- 1.Qe8?
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Rh4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 2.Qa4#
- 2.Qb5#
- 1...Se7
- 2.Bxa5#
- 2.Qa4#
- 2.Qb5#
- 1...Sb8
- 2.Bxa5#
- 2.Qa4#
- 2.Qb5#
- 1...Sd8
- 2.Bxa5#
- 2.Qa4#
- 2.Qb5#
- 1...a4
- 2.Rxa4#
- 1...c3!
- 1...Re4
- 1.Ka1?
- Keys
- 1.Qh4!
- 1...Rxh4
- 2.Sxd5#
- 1...Re4
- 2.Sxd5#
- 1...Rf4
- 2.Sxd5#
- 1...Rg4
- 2.Sxd5#
- 1...Bb6
- 2.Rxb6#
- 1...Bb8
- 2.Rb6#
- 1...Se5
- 2.Bxa5#
- 1...Se7
- 2.Bxa5#
- 1...Sb8
- 2.Bxa5#
- 1...Sd8
- 2.Bxa5#
- 1...c3
- 2.Sxd5#
- 1...a4
- 2.Rxa4#
- 1...Rxh4
- 1.Qh4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(d);OGATE::P(D),XP(d)
- P(f);OGATE::R1(E),XP(f)
- Tries
- Try
- K(C);P-FLIGHT
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(d);OGATE::P(D),XP(d)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(a);
- Try
- K(C);S_FLIGHT
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(d);OGATE::P(D),XP(d)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(a);CHECK
- Try
- B(A);
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(d);OGATE::P(D),XP(d)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);CHECK,XB(A)
- Try
- B(H);
- Vars
- B(j);OGATE,XB(H)::R(E),XB(j)
- R(e);N_GUARD::S(G),XP(h)
- S(i);N_GUARD::B(H),XP(f)
- P(d);OGATE::P(D),XP(d)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- B(j);
- Try
- B(H);
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(d);OGATE::P(D),XP(d)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- S(i);XB(H)
- Try
- R(E);XS(i)
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- P(d);OGATE::P(D),XP(d)
- Refutation
- P(f);
- Try
- R(E);XB(j)
- Threat
- R(E)
- Vars
- S(i);N_GUARD::B(H),XP(f)
- Refutation
- S(i);XR(E)
- Try
- Q(B);
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);
- Try
- Q(B);
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);
- Try
- Q(B);
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);
- Try
- Q(B);
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);
- Try
- Q(B);
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);
- Try
- Q(B);
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);
- Try
- Q(B);
- Vars
- R(e);N_GUARD,XQ(B)::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(d);P_SPINR(e)::S(G),XP(h)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(h);XQ(B)
- Try
- Q(B);
- Vars
- S(i);N_GUARD,XQ(B)::B(H),XP(f)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);
- Try
- Q(B);
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);
- Try
- Q(B);
- Vars
- S(i);N_GUARD,XQ(B)::B(H),XP(f)
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);
- Try
- Q(B);
- Vars
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- P(f);OGATE::R1(E),XP(f)
- Refutation
- P(d);
- Try
- Actual
- Q(B);
- Vars
- R(e);N_GUARD,XQ(B)::S(G),XP(h)
- R(e);N_GUARD::S(G),XP(h)
- B(j);N_GUARD::R(E),XB(j)
- B(j);N_GUARD::R(E)
- S(i);N_GUARD::B(H),XP(f)
- P(d);P_SPINR(e)::S(G),XP(h)
- P(f);OGATE::R1(E),XP(f)
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).