MESON Chess Problem Database
Problem Display
PID: 11295 (1r6/2BPPQ2/1pr3pp/1R4pb/2N3kp/R5P1/2K3P1/6n1 w - - 0 1)
Froberg, Johan Hilding Laurentius
Vart Hem, 1937
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Rxc4+
- 2.Qxc4#
- 1...Rd6
- 2.Se5#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se3#
- 1...Rxc7
- 2.Qe6#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 1...Rxc4+
- Tries
- 1.Kb1?
- threat
- 2.Se3#
- 2.Se5#
- 1...Rxc4
- 2.Qxc4#
- 2.Qe6#
- 1...Rxc7
- 2.Se5#
- 2.Qe6#
- 1...Rc5
- 2.Se3#
- 1...Rd6
- 2.Se5#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se3#
- 1...Sf3
- 2.Se3#
- 2.Qxf3#
- 1...hxg3!
- threat
- 1.Kb2?
- threat
- 2.Se3#
- 2.Se5#
- 1...Rxc4
- 2.Qxc4#
- 2.Qe6#
- 1...Rxc7
- 2.Se5#
- 2.Qe6#
- 1...Rc5
- 2.Se3#
- 1...Rd6
- 2.Se5#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se3#
- 1...Sf3
- 2.Se3#
- 2.Qxf3#
- 1...hxg3!
- threat
- 1.Rc3?
- threat
- 2.Se3#
- 2.Se5#
- 1...Rxc4
- 2.Rxc4#
- 2.Qxc4#
- 2.Qe6#
- 1...Rxc7
- 2.Se5#
- 2.Qe6#
- 1...Rc5
- 2.Se3#
- 1...Rd6
- 2.Se5#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se3#
- 1...Sf3
- 2.Se3#
- 2.Qxf3#
- 1...hxg3!
- threat
- 1.Re3?
- threat
- 2.Re4#
- 1...Rxc4+
- 2.Qxc4#
- 1...Rxc7
- 2.Qe6#
- 1...Rd6
- 2.Se5#
- 1...Re6
- 2.Qxe6#
- 1...Se2
- 2.Qf3#
- 1...Sh3
- 2.Qf3#
- 1...Rf6!
- threat
- 1.Rd5?
- threat
- 2.Rd4#
- 1...Rd6
- 2.Se5#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se3#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 1...Rxc4+!
- threat
- 1.Re5?
- threat
- 2.Re4#
- 1...Rxc4+
- 2.Qxc4#
- 1...Re6
- 2.Qxe6#
- 1...Se2
- 2.Qf3#
- 1...Sh3
- 2.Qf3#
- 1...Rf6!
- threat
- 1.Rxg5+?
- 1...Kxg5
- 2.Qf4#
- 1...hxg5!
- 1...Kxg5
- 1.Qd5?
- threat
- 2.Qe4#
- 2.Qd4#
- 1...Rxc4+
- 2.Qxc4#
- 1...Rc5
- 2.Qe4#
- 1...Rd6
- 2.Qe4#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se3#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 2.Qe4#
- 1...Sh3
- 2.Qf3#
- 2.Qd1#
- 1...Rf8!
- threat
- 1.d8Q?
- threat
- 2.Qd4#
- 1...Rxc4+
- 2.Qxc4#
- 1...Rd6
- 2.Se5#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se3#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 2.Qd1#
- 1...Rxd8!
- threat
- 1.d8R?
- threat
- 2.Rd4#
- 1...Rxc4+
- 2.Qxc4#
- 1...Rd6
- 2.Se5#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se3#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 1...Rxd8!
- threat
- 1.e8Q?
- threat
- 2.Qe4#
- 1...Rxc4+
- 2.Qxc4#
- 1...Re6
- 2.Qfxe6#
- 2.Qexe6#
- 1...Rf6
- 2.Se3#
- 1...Se2
- 2.Qf3#
- 2.Qxe2#
- 1...Sh3
- 2.Qf3#
- 2.Qe2#
- 1...Rxe8!
- threat
- 1.e8R?
- threat
- 2.Re4#
- 1...Rxc4+
- 2.Qxc4#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se3#
- 1...Se2
- 2.Qf3#
- 1...Sh3
- 2.Qf3#
- 1...Rxe8!
- threat
- 1.Kb1?
- Keys
- 1.Rd3!
- threat
- 2.Rd4#
- 1...Rxc4+
- 2.Qxc4#
- 1...Rxc7
- 2.Qe6#
- 1...Rd6
- 2.Se5#
- 1...Re6
- 2.Qxe6#
- 1...Rf6
- 2.Se3#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- threat
- 1.Rd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(g);CHECK,OGATE,XS(E)::QAR(J),XR(g)
- R(g);N_PINS(E)::S(E)
- R(g);N_GUARD,N_PINS(E)::QAB(J),XR(g)
- R(g);N_GUARD,XB(G)::QAB(J)
- S(a);N_GUARD::QAB1(J)
- S(a);N_GUARD::QAB1(J),XS(a)
- Tries
- Try
- K(A);N_SPINS(E),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(g);::S(E)
- R(g);N_GUARD::QAB(J),XR(g)
- Refutation
- P(c);XP(D)
- Try
- K(A);N_SPINS(E),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(g);::S(E)
- R(g);N_GUARD::QAB(J),XR(g)
- Refutation
- P(c);XP(D)
- Try
- R(C);N_SPINS(E)
- Threat
- DUALS(2)
- Vars
- R(g);::S(E)
- R(g);N_GUARD::QAB(J),XR(g)
- Refutation
- P(c);XP(D)
- Try
- R(C);
- Threat
- R(C)
- Vars
- R(g);CHECK,OGATE,XS(E)::QAR(J),XR(g)
- R(g);N_GUARD,XB(G)::QAB(J)
- R(g);N_PINS(E)::S(E)
- R(g);N_GUARD,N_PINS(E)::QAB(J),XR(g)
- S(a);N_GUARD::QAB1(J)
- Refutation
- R(g);N_PINS(E)
- Try
- R(F);
- Threat
- R(F)
- Vars
- R(g);N_PINS(E)::S(E)
- R(g);N_GUARD,N_PINS(E)::QAB(J),XR(g)
- S(a);N_GUARD::QAB1(J)
- S(a);N_GUARD::QAB1(J),XS(a)
- Refutation
- R(g);CHECK,XS(E)
- Try
- R(F);
- Threat
- R(F)
- Vars
- R(g);CHECK,OGATE,XS(E)::QAR(J),XR(g)
- R(g);N_GUARD,N_PINS(E)::QAB(J),XR(g)
- S(a);N_GUARD::QAB1(J)
- Refutation
- R(g);N_PINS(E)
- Try
- R(F);CHECK,XP(d)
- Vars
- K(b);P-FLIGHT,XR(F)::QAB1(J)
- Refutation
- P(i);XR(F)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,OGATE,XS(E)::QAR(J),XR(g)
- R(g);::QAR2(J)
- R(g);N_PINS(E)::QAR2(J)
- R(g);N_GUARD,N_PINS(E)::QAB(J),XR(g)
- R(g);N_PINS(E)::S(E)
- S(a);N_GUARD::QAB1(J)
- Refutation
- R(j);
- Try
- P(H);
- Threat
- QAR(H)
- Vars
- R(g);CHECK,OGATE,XS(E)::QAR(J),XR(g)
- R(g);N_PINS(E)::S(E)
- R(g);N_GUARD,N_PINS(E)::QAB(J),XR(g)
- S(a);N_GUARD::QAB1(J)
- S(a);N_GUARD::QAB1(J),XS(a)
- Refutation
- R(j);XQ(H)
- Try
- P(H);
- Threat
- R(H)
- Vars
- R(g);CHECK,OGATE,XS(E)::QAR(J),XR(g)
- R(g);N_PINS(E)::S(E)
- R(g);N_GUARD,N_PINS(E)::QAB(J),XR(g)
- S(a);N_GUARD::QAB1(J)
- S(a);N_GUARD::QAB1(J),XS(a)
- Refutation
- R(j);XR(H)
- Try
- P(I);
- Threat
- QAR2(I)
- Vars
- R(g);CHECK,OGATE,XS(E)::QAR(J),XR(g)
- R(g);N_PINS(E)::S(E)
- Refutation
- R(j);XQ(I)
- Try
- P(I);
- Threat
- R(I)
- Vars
- R(g);CHECK,OGATE,XS(E)::QAR(J),XR(g)
- R(g);N_GUARD,N_PINS(E)::QAB(J),XR(g)
- R(g);N_PINS(E)::S(E)
- S(a);N_GUARD::QAB1(J)
- Refutation
- R(j);XR(I)
- Try
- Actual
- R(C);
- Threat
- R(C)
- Vars
- R(g);CHECK,OGATE,XS(E)::QAR(J),XR(g)
- R(g);N_GUARD,XB(G)::QAB(J)
- R(g);N_PINS(E)::S(E)
- R(g);N_GUARD,N_PINS(E)::QAB(J),XR(g)
- S(a);N_GUARD::QAB1(J)
- S(a);N_GUARD::QAB1(J),XS(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).