MESON Chess Problem Database
Problem Display
PID: 215698 (Rb2r1B1/Q7/n1pN1p2/2B1kpP1/K1P2R2/4p1Pp/7P/4Nqn1 w - - 0 1)
Jespersen, Karl Lorenz Jesper
Brighton Guardian, 1882
#2
12 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qe2
- 2.Rxf5#
- 1...Qg2
- 2.Sd3#
- 2.Rxf5#
- 1...Qd3
- 2.Sxd3#
- 1...Qxc4+
- 2.Sxc4#
- 1...Qxe1
- 2.Rxf5#
- 1...Qf2
- 2.Sd3#
- 1...Qf3
- 2.Sd3#
- 1...Qxf4
- 2.Sd3#
- 1...Re6
- 2.Sf7#
- 1...Re7
- 2.Qxe7#
- 1...Rc8
- 2.Qe7#
- 1...Rd8
- 2.Qe7#
- 1...Rf8
- 2.Qe7#
- 1...Rxg8
- 2.Qe7#
- 1...Bxd6
- 2.Bd4#
- 1...Bxa7
- 2.Rxe8#
- 1...Bc7
- 2.Rxe8#
- 1...Se2
- 2.Sd3#
- 1...Sf3
- 2.Rxf5#
- 1...Sxc5+
- 2.Qxc5#
- 1...e2
- 2.Sd3#
- 1...fxg5
- 2.Qg7#
- 1...Qe2
- Tries
- 1.Sf3+?
- 1...Sxf3
- 2.Rxf5#
- 1...Qxf3!
- 1...Sxf3
- 1.Sxe8?
- threat
- 2.Bd4#
- 2.Qe7#
- 1...Sxc5+
- 2.Qxc5#
- 1...Qxf4
- 2.Qe7#
- 1...Bxa7
- 2.Bd6#
- 1...Qd3
- 2.Sxd3#
- 2.Qe7#
- 1...Bd6
- 2.Bd4#
- 2.Bxd6#
- 1...Bc7
- 2.Bd4#
- 1...Se2
- 2.Sd3#
- 2.Qe7#
- 1...Sf3
- 2.Qe7#
- 1...Sc7
- 2.Bd4#
- 2.Bd6#
- 1...Qxc4+!
- threat
- 1.Ba3?
- threat
- 2.Qxe3#
- 2.Qd4#
- 1...Qxc4+
- 2.Sxc4#
- 1...Sc5+
- 2.Qxc5#
- 1...Qxe1
- 2.Rxf5#
- 2.Qd4#
- 1...Qxf4
- 2.Sd3#
- 1...Rxg8
- 2.Qxe3#
- 2.Qe7#
- 1...Bxa7
- 2.Rxe8#
- 1...fxg5
- 2.Qd4#
- 2.Qg7#
- 1...Sb4
- 2.Qd4#
- 1...Qe2
- 2.Rxf5#
- 2.Qd4#
- 1...Qg2
- 2.Sd3#
- 2.Rxf5#
- 2.Qd4#
- 1...Qd3
- 2.Sxd3#
- 1...Qf2
- 2.Sd3#
- 2.Qd4#
- 1...Qf3
- 2.Sd3#
- 2.Qd4#
- 1...Se2
- 2.Sd3#
- 2.Qxe3#
- 1...Sf3
- 2.Rxf5#
- 2.Qxe3#
- 1...e2
- 2.Sd3#
- 2.Qe3#
- 2.Qd4#
- 1...c5!
- threat
- 1.Bb4?
- threat
- 2.Qxe3#
- 2.Qd4#
- 1...Sc5+
- 2.Qxc5#
- 1...Qxc4
- 2.Sxc4#
- 2.Rxf5#
- 1...Qxe1
- 2.Rxf5#
- 2.Qd4#
- 1...Qxf4
- 2.Sd3#
- 1...Rxg8
- 2.Qxe3#
- 2.Qe7#
- 1...Bxa7
- 2.Rxe8#
- 1...Sxb4
- 2.Qd4#
- 1...fxg5
- 2.Qd4#
- 2.Qg7#
- 1...Qe2
- 2.Rxf5#
- 2.Qd4#
- 1...Qg2
- 2.Sd3#
- 2.Rxf5#
- 2.Qd4#
- 1...Qd3
- 2.Sxd3#
- 1...Qf2
- 2.Sd3#
- 2.Qd4#
- 1...Qf3
- 2.Sd3#
- 2.Qd4#
- 1...Se2
- 2.Sd3#
- 2.Qxe3#
- 1...Sf3
- 2.Rxf5#
- 2.Qxe3#
- 1...e2
- 2.Sd3#
- 2.Qe3#
- 2.Qd4#
- 1...c5!
- threat
- 1.Rxf1?
- threat
- 2.Sd3#
- 2.Rxf5#
- 1...Sxc5+
- 2.Qxc5#
- 1...Rxg8
- 2.Qe7#
- 1...fxg5
- 2.Rxf5#
- 2.Qg7#
- 1...Sf3
- 2.Sd3#
- 2.Sxf3#
- 1...Sb4
- 2.Rxf5#
- 1...f4
- 2.Sd3#
- 2.gxf4#
- 1...Bxd6!
- threat
- 1.Qd7?
- threat
- 2.Sf7#
- 2.Bd4#
- 2.Qxf5#
- 2.Qxe8#
- 1...Qxc4+
- 2.Sxc4#
- 1...Qxf4
- 2.Sd3#
- 2.Qxe8#
- 1...Rxg8
- 2.Sf7#
- 2.Bd4#
- 2.Qxf5#
- 2.Qe7#
- 1...Bxd6
- 2.Bd4#
- 2.Bxd6#
- 2.Qxf5#
- 2.Qxd6#
- 1...fxg5
- 2.Bd4#
- 2.Qxf5#
- 2.Qg7#
- 1...Qd3
- 2.Sxd3#
- 2.Sf7#
- 2.Qxe8#
- 1...Re6
- 2.Sf7#
- 2.Bd4#
- 2.Qxe6#
- 1...Re7
- 2.Bd4#
- 2.Qxf5#
- 2.Qxe7#
- 1...Rc8
- 2.Sf7#
- 2.Bd4#
- 2.Qxf5#
- 2.Qe6#
- 2.Qe7#
- 1...Rd8
- 2.Sf7#
- 2.Bd4#
- 2.Qxf5#
- 2.Qe6#
- 2.Qe7#
- 1...Rf8
- 2.Bd4#
- 2.Qxf5#
- 2.Qe6#
- 2.Qe7#
- 1...Ba7
- 2.Sf7#
- 2.Rxe8#
- 2.Qxf5#
- 2.Qxe8#
- 1...Se2
- 2.Sd3#
- 2.Sf7#
- 2.Qxf5#
- 2.Qxe8#
- 1...Sf3
- 2.Sf7#
- 2.Rxf5#
- 2.Qxf5#
- 2.Qxe8#
- 1...Sc7
- 2.Sf7#
- 2.Bd4#
- 2.Qxf5#
- 1...Sxc5+!
- threat
- 1.Qf7?
- threat
- 2.Qxe8#
- 2.Qxf6#
- 1...Qxc4+
- 2.Sxc4#
- 1...Rxg8
- 2.Qxf6#
- 2.Qe7#
- 1...Bxd6
- 2.Bd4#
- 2.Qxf6#
- 1...fxg5
- 2.Qxf5#
- 2.Qg7#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxf6#
- 2.Qxe7#
- 1...Rc8
- 2.Qe6#
- 2.Qxf6#
- 2.Qe7#
- 1...Rd8
- 2.Qe6#
- 2.Qxf6#
- 2.Qe7#
- 1...Rf8
- 2.Qe6#
- 2.Qe7#
- 1...Sc7
- 2.Qxf6#
- 1...Sxc5+!
- threat
- 1.Qg7?
- threat
- 2.Qxf6#
- 1...Qxc4+
- 2.Sxc4#
- 1...Re6
- 2.Sf7#
- 1...Rf8
- 2.Qe7#
- 1...Sxc5+!
- threat
- 1.Qh7?
- threat
- 2.Qxf5#
- 1...Qxc4+
- 2.Sxc4#
- 1...Qxf4
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Sxc5+!
- threat
- 1.Sf3+?
- Keys
- 1.Kb3!
- 1...Qd3+
- 2.Sxd3#
- 1...Qxc4+
- 2.Sxc4#
- 1...Sxc5+
- 2.Qxc5#
- 1...Qxe1
- 2.Rxf5#
- 1...Qxf4
- 2.Sd3#
- 1...Rxg8
- 2.Qe7#
- 1...Bxd6
- 2.Bd4#
- 1...Bxa7
- 2.Rxe8#
- 1...fxg5
- 2.Qg7#
- 1...Qe2
- 2.Rxf5#
- 1...Qg2
- 2.Sd3#
- 2.Rxf5#
- 1...Qf2
- 2.Sd3#
- 1...Qf3
- 2.Sd3#
- 1...Re6
- 2.Sf7#
- 1...Re7
- 2.Qxe7#
- 1...Rc8
- 2.Qe7#
- 1...Rd8
- 2.Qe7#
- 1...Rf8
- 2.Qe7#
- 1...Bc7
- 2.Rxe8#
- 1...Se2
- 2.Sd3#
- 1...Sf3
- 2.Rxf5#
- 1...Sb4
- 2.Qa1#
- 1...Sc7
- 2.Qa1#
- 1...e2
- 2.Sd3#
- 1...Qd3+
- 1.Kb3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(a);N_GUARD::R1(F),XP(f)
- Q(a);N_GUARD::S(A),XQ(a)
- Q(a);CHECK,XP(E)::S(I),XQ(a)
- Q(a);N_GUARD,XS(A)::R1(F),XP(f)
- Q(a);N_GUARD::S(A)
- Q(a);N_GUARD,P_PINP(E),XR(F)::S(A)
- R(k);SBLOCK::S(I)
- R(k);N_GUARD::QAR2(J),XR(k)
- R(k);N_GUARD::QAR2(J)
- R(k);N_GUARD,XB(L)::QAR2(J)
- B(j);SBLOCK,XS(I)::B(G)
- B(j);OGATE,XQ(J)::R(K),XR(k)
- B(j);OGATE::R(K),XR(k)
- S(b);S_CUTQ(a)::S(A)
- S(b);S_CUTQ(a)::R1(F),XP(f)
- S(g);CHECK,OGATE,XB(G)::QAR2(J),XS(g)
- P(c);S_CUTQ(a)::S(A)
- P(i);OGATEB,XP(H)::QAB(J)
- Tries
- Try
- S(A);CHECK
- Vars
- S(b);XS(A)::R1(F),XP(f)
- Refutation
- Q(a);XS(A)
- Try
- S(I);XR(k)
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,OGATE,XB(G)::QAR2(J),XS(g)
- Q(a);P_PINP(E),XR(F)::QAR2(J)
- B(j);N_GUARD,XQ(J)::B(G)
- B(j);::B(G)
- S(b);::QAR2(J)
- Refutation
- Q(a);CHECK,XP(E)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,XP(E)::S(I),XQ(a)
- S(g);CHECK,N_GUARD::QAR2(J),XS(g)
- Q(a);N_GUARD,P_PINP(E),XR(F)::S(A)
- B(j);OGATE,XQ(J)::R(K),XR(k)
- S(g);::QAB1(J)
- Q(a);N_GUARD::S(A),XQ(a)
- Refutation
- P(h);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,N_GUARD::QAR2(J),XS(g)
- Q(a);N_GUARD,XR(F)::S(A)
- B(j);OGATE,XQ(J)::R(K),XR(k)
- S(g);XB(G)::QAB1(J)
- Q(a);N_GUARD::S(A),XQ(a)
- Refutation
- P(h);
- Try
- R(F);XQ(a)
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,OGATE,XB(G)::QAR2(J),XS(g)
- R(k);N_GUARD,XB(L)::QAR2(J)
- S(g);::R1(F),XP(f)
- Refutation
- B(j);XS(I)
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- Q(a);CHECK,XP(E)::S(I),XQ(a)
- Refutation
- S(g);CHECK,XB(G)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,XP(E)::S(I),XQ(a)
- R(k);N_GUARD::QAR1(J),XR(k)
- S(g);::QAB1(J),XP(i)
- Refutation
- S(g);CHECK,XB(G)
- Try
- Q(J);P_PINP(i)
- Threat
- QAB1(J),XP(i)
- Vars
- Q(a);CHECK,XP(E)::S(I),XQ(a)
- R(k);SBLOCK::S(I)
- R(k);N_GUARD::QAR2(J)
- Refutation
- S(g);CHECK,XB(G)
- Try
- Q(J);
- Threat
- QAR1(J),XP(f)
- Vars
- Q(a);CHECK,XP(E)::S(I),XQ(a)
- Q(a);N_GUARD,P_PINP(E),XR(F)::S(A)
- Q(a);N_GUARD::S(A),XQ(a)
- Refutation
- S(g);CHECK,XB(G)
- Try
- Actual
- K(D);S_FLIGHT
- Vars
- Q(a);CHECK,N_GUARD::S(A),XQ(a)
- Q(a);CHECK,XP(E)::S(I),XQ(a)
- S(g);CHECK,OGATE,XB(G)::QAR2(J),XS(g)
- Q(a);N_GUARD,XS(A)::R1(F),XP(f)
- Q(a);N_GUARD,XR(F)::S(A)
- R(k);N_GUARD,XB(L)::QAR2(J)
- B(j);SBLOCK,XS(I)::B(G)
- B(j);OGATE,XQ(J)::R(K),XR(k)
- P(i);OGATEB,XP(H)::QAB(J)
- Q(a);N_GUARD::R1(F),XP(f)
- Q(a);N_GUARD::S(A)
- R(k);SBLOCK::S(I)
- R(k);N_GUARD::QAR2(J),XR(k)
- R(k);N_GUARD::QAR2(J)
- B(j);OGATE::R(K),XR(k)
- S(b);S_CUTQ(a)::S(A)
- S(b);S_CUTQ(a)::R1(F),XP(f)
- S(g);OGATE::QAB(J)
- P(c);S_CUTQ(a)::S(A)
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).