MESON Chess Problem Database
Problem Display
PID: 269947 (2n1N3/1BK2P2/4p3/1bBPk3/r3N1P1/4P3/8/5R1Q w - - 0 1)
Doukhan, Gerard
Tehtavaniekka, 2021
#2
11 + 5
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Bd4#
- 1...Ra2
- 2.Bd4#
- 1...Ra3
- 2.Bd4#
- 1...Rd4
- 2.Bxd4#
- 2.exd4#
- 1...Rxe4
- 2.Qh5#
- 2.Qh8#
- 1...Ra5
- 2.Bd4#
- 1...Ra6
- 2.Bd4#
- 1...Ra7
- 2.Bd4#
- 1...Ra8
- 2.Bd4#
- 1...Bc4
- 2.Bd4#
- 1...Sb6
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Se7
- 2.Bd6#
- 1...Ra1
- Tries
- 1.Sd2?
- threat
- 2.Qh5#
- 2.Qh8#
- 1...exd5
- 2.Qxd5#
- 1...Rf4
- 2.exf4#
- 1...Bd3
- 2.Qh8#
- 1...Bc6
- 2.Qh5#
- 1...Sd6
- 2.Bxd6#
- 2.Qh8#
- 1...Se7
- 2.Bd6#
- 2.Qh8#
- 1...Rxg4!
- threat
- 1.Sf2?
- threat
- 2.Qh5#
- 2.Qh8#
- 1...Rxg4
- 2.Sxg4#
- 1...Bxe8
- 2.Sd3#
- 2.Qh8#
- 1...exd5
- 2.Qxd5#
- 1...Bd3
- 2.Sxd3#
- 2.Qh8#
- 1...Bc6
- 2.Sd3#
- 2.Qh5#
- 1...Sd6
- 2.Bxd6#
- 2.Qh8#
- 1...Se7
- 2.Bd6#
- 2.Qh8#
- 1...Rf4!
- threat
- 1.Sc3?
- threat
- 2.Qh5#
- 2.Qh8#
- 1...exd5
- 2.Qxd5#
- 1...Rf4
- 2.exf4#
- 1...Bd3
- 2.Qh8#
- 1...Sd6
- 2.Bxd6#
- 2.Qh8#
- 1...Se7
- 2.Bd6#
- 2.Qh8#
- 1...Rxg4!
- threat
- 1.Sg3?
- threat
- 2.Qh5#
- 2.Qh8#
- 1...exd5
- 2.Qxd5#
- 1...Rf4
- 2.exf4#
- 1...Bd3
- 2.Qh8#
- 1...Bc6
- 2.Qh5#
- 1...Sd6
- 2.Bxd6#
- 2.Qh8#
- 1...Se7
- 2.Bd6#
- 2.Qh8#
- 1...Rxg4!
- threat
- 1.Sg5?
- threat
- 2.Qh8#
- 1...Rf4
- 2.exf4#
- 1...Bc6!
- threat
- 1.S4d6?
- threat
- 2.Qh5#
- 2.Qh8#
- 1...Sxd6
- 2.Bxd6#
- 1...exd5
- 2.Qxd5#
- 1...Rf4
- 2.exf4#
- 1...Bd3
- 2.Qh8#
- 1...Bc6
- 2.Qh5#
- 1...Se7
- 2.Qh8#
- 1...Rxg4!
- threat
- 1.S8d6?
- threat
- 2.Qh2#
- 2.Qh5#
- 2.Qh8#
- 1...Rxe4
- 2.Qxe4#
- 2.Qh5#
- 2.Qh8#
- 1...Sxd6
- 2.Bxd6#
- 1...Bc6
- 2.Qh5#
- 1...Ra2
- 2.Bd4#
- 2.Qh5#
- 2.Qh8#
- 1...Se7
- 2.Qh2#
- 2.Qh8#
- 1...exd5!
- threat
- 1.S8f6?
- threat
- 2.Qh2#
- 2.Qh5#
- 1...Rxe4
- 2.Qxe4#
- 2.Qh5#
- 1...Ra2
- 2.Bd4#
- 2.Qh5#
- 1...Sd6
- 2.Bxd6#
- 2.Qh2#
- 1...Se7
- 2.Bd6#
- 2.Qh2#
- 1...exd5!
- threat
- 1.Rf4?
- threat
- 2.Qh5#
- 2.Qh8#
- 1...Bc6
- 2.Qh5#
- 1...Sd6
- 2.Bxd6#
- 2.Qh8#
- 1...Se7
- 2.Bd6#
- 2.Qh8#
- 1...exd5!
- threat
- 1.Qf3?
- threat
- 2.Qf4#
- 1...Rxe4
- 2.Qf6#
- 1...exd5
- 2.Qf5#
- 1...Bc6!
- threat
- 1.d6?
- threat
- 2.Qh2#
- 2.Qh5#
- 2.Qh8#
- 1...Rxe4
- 2.Qxe4#
- 2.Qh5#
- 2.Qh8#
- 1...Sxd6
- 2.Bxd6#
- 2.Qh2#
- 2.Qh8#
- 1...Ra2
- 2.Bd4#
- 2.Qh5#
- 2.Qh8#
- 1...Se7
- 2.Qh2#
- 2.Qh8#
- 1...Bc6!
- threat
- 1.f8Q?
- threat
- 2.Qg7#
- 2.Qf4#
- 2.Qf6#
- 2.Qfh8#
- 1...Rxe4
- 2.Qg7#
- 2.Qh5#
- 2.Qhh8#
- 2.Qf6#
- 2.Qfh8#
- 1...exd5
- 2.Qf5#
- 2.Qf6#
- 1...Bc6!
- threat
- 1.Sd2?
- Keys
- 1.S4f6!
- threat
- 2.Qh5#
- 1...Rxg4
- 2.Sxg4#
- 1...exd5
- 2.Qxd5#
- 1...Rf4
- 2.exf4#
- 1...Bd3
- 2.Sd7#
- 1...Sd6
- 2.Bxd6#
- 1...Se7
- 2.Bd6#
- threat
- 1.S4f6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 10
- Sets
- R(a);N_GUARD::B(F)
- R(a);N_GUARD,P_PINB(H)::B(F)
- B(b);S_CUTR(a)::B(F)
- S(e);N_GUARD::B(F)
- S(e);N_GUARD::B(F),XS(e)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- P(d);OGATE,XP(G)::QAR1(B),XP(d)
- R(a);OGATE::P(C),XR(a)
- B(b);::QAB(B)
- B(b);::QAR(B)
- Refutation
- R(a);XP(E)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(a);XP(E)::S(D),XR(a)
- P(d);OGATE,XP(G)::QAR1(B),XP(d)
- Refutation
- R(a);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- P(d);OGATE,XP(G)::QAR1(B),XP(d)
- R(a);OGATE::P(C),XR(a)
- B(b);::QAB(B)
- Refutation
- R(a);XP(E)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- P(d);OGATE,XP(G)::QAR1(B),XP(d)
- R(a);OGATE::P(C),XR(a)
- B(b);::QAB(B)
- B(b);::QAR(B)
- Refutation
- R(a);XP(E)
- Try
- S(D);
- Threat
- QAB(B)
- Vars
- R(a);OGATE::P(C),XR(a)
- Refutation
- B(b);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(e);OGATE,XS(D)::B(F),XS(e)
- P(d);OGATE,XP(G)::QAR1(B),XP(d)
- R(a);OGATE::P(C),XR(a)
- B(b);::QAB(B)
- B(b);::QAR(B)
- S(e);::QAB(B)
- Refutation
- R(a);XP(E)
- Try
- S(K);
- Threat
- DUALS(3)
- Vars
- S(e);OGATE,XS(K)::B(F),XS(e)
- B(b);::QAR(B)
- Refutation
- P(d);XP(G)
- Try
- S(K);
- Threat
- DUALS(2)
- Refutation
- P(d);XP(G)
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- B(b);::QAR(B)
- Refutation
- P(d);XP(G)
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- R(a);SBLOCK,XS(D)::QAB1(B)
- P(d);N_GUARD,XP(G)::QAR1(B)
- Refutation
- B(b);
- Try
- P(G);
- Threat
- DUALS(3)
- Refutation
- B(b);
- Try
- P(J);
- Threat
- DUALS(4)
- Refutation
- B(b);
- Try
- Actual
- S(D);
- Threat
- QAR(B)
- Vars
- R(a);XP(E)::S(D),XR(a)
- P(d);OGATE,XP(G)::QAR1(B),XP(d)
- R(a);OGATE::P(C),XR(a)
- B(b);N_GUARD::S(D)
- S(e);N_GUARD::B(F),XS(e)
- S(e);N_GUARD::B(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).