MESON Chess Problem Database
Problem Display
PID: 81401 (5Q2/3P2K1/2r1P1pp/p1P1R3/RNPk3N/3P4/1P1qBP2/2B4b w - - 0 1)
Guida, Marco
3rd HM., Die Schwalbe, 2008
#2
15 + 7
| 23 | Die Schwalbe | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Kxe5
- 2.Qf6#
- 1...Qxb2
- 2.Bxb2#
- 1...Rxc5
- 2.Qxc5#
- 1...Bf3
- 2.Sxf3#
- 1...Be4
- 2.Rxe4#
- 1...Bd5
- 2.Rxd5#
- 1...Kxe5
- Tries
- 1.Sc2+?
- 1...Kxe5
- 2.Qf6#
- 1...Qxc2!
- 1...Kxe5
- 1.Sg2?
- threat
- 2.Sxc6#
- 2.Re4#
- 2.Rd5#
- 1...Kxe5
- 2.Qf6#
- 1...Qxb4
- 2.Re4#
- 2.Rd5#
- 2.Qf4#
- 1...Qxb2
- 2.Bxb2#
- 1...Qxe2
- 2.Rd5#
- 1...Qxd3
- 2.Sxc6#
- 1...Rxc5
- 2.Re4#
- 2.Qxc5#
- 1...Rxe6
- 2.Rd5#
- 1...axb4
- 2.Re4#
- 2.Rd5#
- 1...Qe3
- 2.Sxc6#
- 2.Rd5#
- 1...Qf4
- 2.Sxc6#
- 2.Rd5#
- 2.Qxf4#
- 1...Qg5
- 2.Sxc6#
- 2.Re4#
- 1...Ra6
- 2.Re4#
- 2.Rd5#
- 1...Rb6
- 2.Re4#
- 2.Rd5#
- 1...Rd6
- 2.Qxd6#
- 1...Rc7
- 2.Re4#
- 2.Rd5#
- 2.Qd6#
- 1...Rc8
- 2.Re4#
- 2.Rd5#
- 2.Qd6#
- 1...Bxg2!
- threat
- 1.Bxd2?
- threat
- 2.Bc3#
- 1...Kxe5
- 2.Qf6#
- 1...axb4!
- threat
- 1.Qd6+?
- 1...Bd5
- 2.Sxc6#
- 2.Sf3#
- 2.Re4#
- 2.Rxd5#
- 2.Qxd5#
- 1...Rxd6!
- 1...Bd5
- 1.Qf3?
- threat
- 2.Sxc6#
- 2.Rd5#
- 1...Kxe5
- 2.Qf6#
- 1...Qxb4
- 2.Rd5#
- 2.Qe3#
- 1...Qxb2
- 2.Bxb2#
- 1...Qxd3
- 2.Sxc6#
- 1...Rxc5
- 2.Re4#
- 1...Rxe6
- 2.Rd5#
- 1...Bxf3
- 2.Sxf3#
- 1...axb4
- 2.Rd5#
- 1...Qg5
- 2.Sxc6#
- 1...Ra6
- 2.Rd5#
- 1...Rb6
- 2.Rd5#
- 1...Rc7
- 2.Rd5#
- 1...Rc8
- 2.Rd5#
- 1...Rd6!
- threat
- 1.Qf4+?
- 1...Be4
- 2.Sxc6#
- 2.Sf3#
- 2.Rd5#
- 2.Qxe4#
- 1...Qxf4!
- 1...Be4
- 1.Qf6?
- threat
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Qxe2
- 2.Rd5#
- 1...Rxc5
- 2.Re4#
- 2.Rd5#
- 1...Rxe6
- 2.Rd5#
- 1...Bd5
- 2.Rxd5#
- 1...Qe3
- 2.Sc2#
- 2.Bxe3#
- 2.Rd5#
- 2.fxe3#
- 1...Qf4
- 2.Sc2#
- 2.Rd5#
- 1...Qg5
- 2.Sc2#
- 2.Rd5#
- 2.Rxg5#
- 1...g5
- 2.Sf5#
- 2.Rd5#
- 2.Rf5#
- 2.Rxg5#
- 1...h5
- 2.Rd5#
- 2.Rf5#
- 2.Rg5#
- 2.Rxh5#
- 1...Qxd3!
- threat
- 1.f3?
- threat
- 2.Sxc6#
- 2.Re4#
- 1...Kxe5
- 2.Qf6#
- 1...Qxb4
- 2.Re4#
- 2.Rd5#
- 2.Qf4#
- 1...Qxb2
- 2.Bxb2#
- 1...Qxe2
- 2.Rd5#
- 1...Qxd3
- 2.Sxc6#
- 1...Rxc5
- 2.Re4#
- 2.Qxc5#
- 1...Bxf3
- 2.Sxf3#
- 1...axb4
- 2.Re4#
- 1...Qe3
- 2.Sxc6#
- 2.Rd5#
- 1...Qf4
- 2.Sxc6#
- 2.Rd5#
- 2.Qxf4#
- 1...Ra6
- 2.Re4#
- 1...Rb6
- 2.Re4#
- 1...Rd6
- 2.Qxd6#
- 1...Rc7
- 2.Re4#
- 2.Qd6#
- 1...Rc8
- 2.Re4#
- 2.Qd6#
- 1...Rxe6!
- threat
- 1.d8Q+?
- 1...Kxe5
- 2.Qdf6#
- 2.Qff6#
- 1...Bd5
- 2.Sxc6#
- 2.Sf3#
- 2.Re4#
- 2.Rxd5#
- 2.Qxd5#
- 1...Rd6!
- 1...Kxe5
- 1.d8R+?
- 1...Kxe5
- 2.Qf6#
- 1...Bd5
- 2.Sxc6#
- 2.Sf3#
- 2.Re4#
- 2.Rexd5#
- 2.Rdxd5#
- 1...Rd6!
- 1...Kxe5
- 1.Sc2+?
- Keys
- 1.Bf3!
- threat
- 2.Re4#
- 2.Rd5#
- 1...Kxe5
- 2.Qf6#
- 1...Qxb4
- 2.Rd5#
- 1...Qxb2
- 2.Bxb2#
- 1...Qxd3
- 2.Sxc6#
- 1...Rxc5
- 2.Re4#
- 2.Qxc5#
- 1...Rxe6
- 2.Rd5#
- 1...Bxf3
- 2.Sxf3#
- 1...axb4
- 2.Rd5#
- 1...Qe1
- 2.Rd5#
- 1...Qe3
- 2.Rd5#
- 1...Qf4
- 2.Rd5#
- 2.Qxf4#
- 1...Qg5
- 2.Re4#
- 1...Qe2
- 2.Rd5#
- 1...Rd6
- 2.Qxd6#
- threat
- 1.Bf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 3
- Sets
- K(c);OGATEB,S_FLIGHT,XR(K)::QAB1(O)
- Q(b);OGATE,XP(B)::B(A),XQ(b)
- R(e);OGATE,XP(J)::QAB1(O),XR(e)
- B(a);N_GUARD::S(I),XB(a)
- B(a);N_GUARD::R1(K),XB(a)
- Tries
- Try
- S(G);CHECK
- Vars
- K(c);S_FLIGHT,XR(K)::QAB1(O)
- Refutation
- Q(b);XS(G)
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- K(c);OGATEB,S_FLIGHT,XR(K)::QAB1(O)
- Q(b);OGATE,XP(B)::B(A),XQ(b)
- Q(b);XB(C)::R1(K)
- Q(b);XP(E)::S(G),XR(e)
- R(e);XP(L)::R1(K)
- R(e);N_GUARD::QAR2(O),XR(e)
- Refutation
- B(a);XS(I)
- Try
- B(A);XQ(b)
- Threat
- B(A)
- Vars
- K(c);OGATEB,S_FLIGHT,XR(K)::QAB1(O)
- Refutation
- P(d);XS(G)
- Try
- Q(O);CHECK
- Refutation
- R(e);XQ(O)
- Try
- Q(O);
- Threat
- DUALS(2)
- Vars
- K(c);OGATEB,S_FLIGHT,XR(K)::QAB1(O)
- Q(b);OGATE,XP(B)::B(A),XQ(b)
- Q(b);XP(E)::S(G),XR(e)
- R(e);SBLOCK,XP(J)::R1(K)
- R(e);XP(L)::R1(K)
- B(a);XQ(O)::S(I),XB(a)
- P(d);XS(G)::R1(K)
- Q(b);::S(G),XR(e)
- R(e);::R1(K)
- R(e);P_PINP(M)::R1(K)
- Refutation
- R(e);
- Try
- Q(O);CHECK
- Refutation
- Q(b);XQ(O)
- Try
- Q(O);
- Threat
- DUALS(4)
- Vars
- Q(b);XB(C)::QAB(O)+R(K),DCHECK
- R(e);XP(L)::QAB(O)+R(K),DCHECK
- B(a);::QAB(O)+R(K),DCHECK,XB(a)
- Refutation
- Q(b);XP(E)
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- K(c);OGATEB,S_FLIGHT,XR(K)::QAB1(O)
- Q(b);OGATE,XP(B)::B(A),XQ(b)
- Q(b);XB(C)::R1(K)
- Q(b);XP(E)::S(G),XR(e)
- B(a);XP(D)::S(I),XB(a)
- P(d);XS(G)::R1(K)
- R(e);::R1(K)
- R(e);N_GUARD::QAR2(O),XR(e)
- Refutation
- R(e);XP(L)
- Try
- P(M);CHECK
- Refutation
- R(e);P_SPINR(e)
- Try
- P(M);CHECK
- Vars
- K(c);S_FLIGHT,XR(K)::QAB1(O)
- Refutation
- R(e);P_SPINR(e)
- Try
- Actual
- B(C);
- Threat
- DUALS(2)
- Vars
- K(c);OGATEB,S_FLIGHT,XR(K)::QAB1(O)
- Q(b);XS(G)::R1(K)
- Q(b);OGATE,XP(B)::B(A),XQ(b)
- Q(b);SBLOCK,XP(E)::S(G),XR(e)
- R(e);XP(L)::R1(K)
- B(a);XB(C)::S(I),XB(a)
- P(d);XS(G)::R1(K)
- Q(b);::R1(K)
- R(e);N_GUARD::QAR2(O),XR(e)
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).