MESON Chess Problem Database
Problem Display
PID: 78552 (8/5n2/2R1PQ2/4P1N1/3kr2n/1bN1b2R/p4P1B/K4B2 w - - 0 1)
Cavrel, Edouard
La Strategie, 1869
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.fxe3#
- 1...Rg4
- 2.fxe3#
- 1...Rxe5
- 2.fxe3#
- 1...Bd1
- 2.Rc4#
- 1...Bc2
- 2.Rc4#
- 1...Ba4
- 2.Rc4#
- 1...Bc4
- 2.Rxc4#
- 1...Bd5
- 2.Sb5#
- 1...Bxe6
- 2.Sxe6#
- 1...Bc1
- 2.Rd3#
- 1...Bd2
- 2.Rd3#
- 1...Bxf2
- 2.Rd3#
- 1...Bf4
- 2.Rd3#
- 1...Bxg5
- 2.Rd3#
- 1...Sg2
- 2.Sf3#
- 1...Sf3
- 2.Sxf3#
- 1...Sf5
- 2.Sf3#
- 1...Sg6
- 2.Sf3#
- 1...Rf4
- Tries
- 1.Rxe3?
- threat
- 2.Rd3#
- 2.Rxe4#
- 1...Rxe5
- 2.Rd3#
- 2.Re4#
- 1...Sxg5
- 2.Rd3#
- 1...Rf4
- 2.Rd3#
- 2.Qxf4#
- 1...Rg4
- 2.Rd3#
- 1...Bc2
- 2.Rc4#
- 1...Bc4
- 2.Rxc4#
- 1...Bd5
- 2.Se2#
- 2.Sb5#
- 2.Rd3#
- 1...Sd6
- 2.Rd3#
- 1...Rxe3!
- threat
- 1.Rxh4?
- threat
- 2.Sf3#
- 2.Rxe4#
- 1...Rxh4
- 2.Sf3#
- 1...Bxf2
- 2.Rxe4#
- 2.Qxf2#
- 1...Bxg5
- 2.Rxe4#
- 1...Bc4
- 2.Rxc4#
- 1...Rf4
- 2.Sf3#
- 1...Rg4
- 2.Sf3#
- 1...Bd1
- 2.Rxe4#
- 2.Rc4#
- 1...Bc2
- 2.Sf3#
- 2.Rc4#
- 1...Bd5
- 2.Sb5#
- 2.Sf3#
- 1...Bf4
- 2.Sf3#
- 1...Sd6
- 2.Sf3#
- 2.exd6#
- 1...Sxg5!
- threat
- 1.Qe7?
- threat
- 2.Qc5#
- 2.Qa7#
- 1...Rf4
- 2.Qc5#
- 1...Bc4
- 2.Rxc4#
- 1...Bf4
- 2.Qc5#
- 1...Sd6
- 2.Qa7#
- 1...Rxe5!
- threat
- 1.Qd8+?
- 1...Bd5
- 2.Sb5#
- 2.Rc4#
- 2.Qb6#
- 2.Qxd5#
- 1...Sd6
- 2.Qb6#
- 1...Sxd8!
- 1...Bd5
- 1.exf7?
- 1...Rxe5
- 2.Bxe5#
- 2.Qxe5#
- 2.fxe3#
- 1...Bxf2
- 2.Rd3#
- 1...Bxg5
- 2.Rd3#
- 1...Bc4
- 2.Rxc4#
- 1...Sg2
- 2.Sf3#
- 1...Rf4
- 2.fxe3#
- 1...Rg4
- 2.fxe3#
- 2.e6#
- 1...Bd1
- 2.Se6#
- 2.Rc4#
- 2.Qd8#
- 2.Qd6#
- 1...Bc2
- 2.Se6#
- 2.Rc4#
- 2.Qd8#
- 2.Qd6#
- 1...Ba4
- 2.Se6#
- 2.Rc4#
- 2.Qd8#
- 2.Qd6#
- 1...Bd5
- 2.Sb5#
- 1...Be6
- 2.Sxe6#
- 1...Bc1
- 2.Rd3#
- 1...Bd2
- 2.Rd3#
- 1...Bf4
- 2.Rd3#
- 1...Sf3
- 2.Sxf3#
- 1...Sf5
- 2.Sf3#
- 1...Sg6
- 2.Sf3#
- 1...Bxf7!
- 1...Rxe5
- 1.Rxe3?
- Keys
- 1.Qg7!
- 1...Rxe5
- 2.fxe3#
- 1...Bxe6
- 2.Sxe6#
- 1...Bxf2
- 2.Rd3#
- 1...Bxg5
- 2.Rd3#
- 1...Sxe5
- 2.Qa7#
- 1...Sxg5
- 2.Qa7#
- 1...Bc4
- 2.Rxc4#
- 1...Sg2
- 2.Sf3#
- 1...Rf4
- 2.fxe3#
- 1...Rg4
- 2.fxe3#
- 1...Bd1
- 2.Rc4#
- 1...Bc2
- 2.Rc4#
- 1...Ba4
- 2.Rc4#
- 1...Bd5
- 2.Sb5#
- 1...Bc1
- 2.Rd3#
- 1...Bd2
- 2.Rd3#
- 1...Bf4
- 2.Rd3#
- 1...Sf3
- 2.Sxf3#
- 1...Sf5
- 2.Sf3#
- 1...Sg6
- 2.Sf3#
- 1...Sd6
- 2.Qa7#
- 1...Sh6
- 2.Qa7#
- 1...Sd8
- 2.Qa7#
- 1...Sh8
- 2.Qa7#
- 1...Rxe5
- 1.Qg7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD::P(C),XB(c)
- R(e);N_GUARD,P_SPINR(e),XP(G)::P(C),XB(c)
- B(b);N_GUARD::R1(I)
- B(b);N_GUARD::R1(I),XB(b)
- B(b);SBLOCK::S(E)
- B(b);XP(J)::S(H),XB(b)
- B(c);OGATE::R1(F)
- B(c);OGATE,XP(C)::R1(F)
- B(c);OGATE,XS(H)::R1(F)
- S(f);N_GUARD::S(H)
- S(f);N_GUARD::S(H),XS(f)
- Tries
- Try
- R(F);XB(c)
- Threat
- DUALS(2)
- Vars
- S(g);XS(H)::R1(F)
- R(e);::R1(F)
- B(b);N_GUARD::R1(I)
- B(b);N_GUARD::R1(I),XB(b)
- S(g);::R1(F)
- Refutation
- R(e);XR(F)
- Try
- R(F);P_PINR(e),XS(f)
- Threat
- DUALS(2)
- Vars
- R(e);N_SPINR(e),XR(F)::S(H)
- B(c);XS(H)::R1(F),XR(e)
- B(b);N_GUARD::R1(I),XB(b)
- R(e);::S(H)
- B(c);N_SPINR(e)::S(H)
- Refutation
- S(g);XS(H)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- R(e);::QAB1(K)
- B(b);N_GUARD::R1(I),XB(b)
- B(c);::QAB1(K)
- S(g);::QAB(K)
- Refutation
- R(e);XP(G)
- Try
- Q(K);CHECK
- Vars
- S(g);P_SPINS(g)::QAB(K)
- Refutation
- S(g);XQ(K)
- Try
- P(J);XS(g)
- Vars
- B(c);OGATE,XP(C)::R1(F)
- B(c);OGATE,XS(H)::R1(F)
- B(b);N_GUARD::R1(I),XB(b)
- S(f);N_GUARD::S(H)
- R(e);N_GUARD::P(C),XB(c)
- B(b);SBLOCK::S(E)
- B(b);N_GUARD::S(H),XB(b)
- B(c);OGATE::R1(F)
- S(f);N_GUARD::S(H),XS(f)
- Refutation
- B(b);XP(J)
- Try
- Actual
- Q(K);
- Vars
- R(e);N_GUARD,P_SPINR(e),XP(G)::P(C),XB(c)
- B(b);XP(J)::S(H),XB(b)
- B(c);OGATE,XP(C)::R1(F)
- B(c);OGATE,XS(H)::R1(F)
- S(g);OGATE,P_SPINS(g),XP(G)::QAB(K)
- S(g);OGATE,XS(H)::QAB(K)
- B(b);N_GUARD::R1(I),XB(b)
- S(f);N_GUARD::S(H)
- R(e);N_GUARD::P(C),XB(c)
- B(b);N_GUARD::R1(I)
- B(b);SBLOCK::S(E)
- B(c);OGATE::R1(F)
- S(f);N_GUARD::S(H),XS(f)
- S(g);OGATE::QAB(K)
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).