MESON Chess Problem Database
Problem Display
PID: 185972 (7N/2p3K1/2R1P2N/1pp1k1P1/Q5Rb/8/B1b5/4nr2 w - - 0 1)
Popov, G?
Chess, 1958
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.S8f7#
- 2.Qf4#
- 1...Rh1
- 2.S8f7#
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rf5
- 2.Sg6#
- 1...Rf7+
- 2.S8xf7#
- 1...Bd1
- 2.Sg6#
- 2.Re4#
- 2.Qe4#
- 1...Bb3
- 2.Qe4#
- 1...Bxa4
- 2.Sg6#
- 1...Be4
- 2.Rxe4#
- 2.Qxe4#
- 1...Bf5
- 2.S6f7#
- 2.S8f7#
- 1...Bg6
- 2.Sxg6#
- 1...Bf2
- 2.S8f7#
- 2.Qf4#
- 1...Sd3
- 2.Sg6#
- 2.Re4#
- 2.Qe4#
- 1...Sf3
- 2.S8f7#
- 2.Qf4#
- 1...c4
- 2.Qxb5#
- 1...Rg1
- Tries
- 1.S6f7+?
- 1...Kf5
- 2.Rxc5#
- 1...Rxf7+!
- 1...Kf5
- 1.Qxc2?
- threat
- 2.Sg6#
- 2.Re4#
- 2.Qe4#
- 2.Qb2#
- 2.Qe2#
- 2.Qc3#
- 2.Qxc5#
- 1...Rf7+
- 2.S6xf7#
- 2.S8xf7#
- 1...Bxg5
- 2.Sg6#
- 2.Re4#
- 2.Qe4#
- 2.Qb2#
- 2.Qc3#
- 2.Qxc5#
- 1...Sxc2
- 2.Sg6#
- 1...c4
- 2.Qe4#
- 1...Rf2
- 2.Sg6#
- 2.Re4#
- 2.Qe4#
- 2.Qc3#
- 2.Qxc5#
- 1...Rf3
- 2.Sg6#
- 2.Re4#
- 2.Qe4#
- 2.Qxc5#
- 1...Rf6
- 2.Re4#
- 2.Qe4#
- 2.Qb2#
- 2.Qe2#
- 2.Qc3#
- 2.Qxc5#
- 1...Bf2
- 2.S6f7#
- 2.Sg6#
- 2.S8f7#
- 2.Re4#
- 2.Qe4#
- 2.Qf5#
- 1...Sg2
- 2.Sg6#
- 2.Re4#
- 2.Qe4#
- 2.Qb2#
- 2.Qc3#
- 2.Qxc5#
- 1...Sd3
- 2.Sg6#
- 2.Qe2#
- 2.Qc3#
- 1...Sf3
- 2.S6f7#
- 2.Sg6#
- 2.S8f7#
- 2.Re4#
- 2.Qe4#
- 2.Qf5#
- 2.Qe2#
- 2.Qxc5#
- 1...b4
- 2.Sg6#
- 2.Re4#
- 2.Qe4#
- 2.Qb2#
- 2.Qe2#
- 2.Qxc5#
- 1...Rf4!
- threat
- 1.Qb3?
- threat
- 2.Qd5#
- 2.Qb2#
- 2.Qc3#
- 1...Rf7+
- 2.S8xf7#
- 1...Rf4
- 2.Qd5#
- 1...Be4
- 2.Qb2#
- 2.Qc3#
- 1...c4
- 2.Qxb5#
- 1...Rf3
- 2.Qd5#
- 1...Bf2
- 2.S8f7#
- 2.Qd5#
- 1...Sd3
- 2.Sg6#
- 2.Qd5#
- 2.Qc3#
- 1...Sf3
- 2.S8f7#
- 2.Qd5#
- 1...b4
- 2.Qd5#
- 2.Qb2#
- 1...Bxb3!
- threat
- 1.Qb4?
- threat
- 2.Qc3#
- 2.Qxc5#
- 2.Qb2#
- 1...Rf7+
- 2.S8xf7#
- 1...Bb3
- 2.Qe4#
- 1...c4
- 2.Qc5#
- 2.Qxb5#
- 1...Rf3
- 2.Qxc5#
- 1...Rf4
- 2.Qxf4#
- 1...Be4
- 2.Rxe4#
- 2.Qc3#
- 2.Qb2#
- 2.Qxe4#
- 1...Bf2
- 2.S8f7#
- 2.Qf4#
- 1...Sd3
- 2.Sg6#
- 2.Re4#
- 2.Qc3#
- 2.Qe4#
- 1...Sf3
- 2.S8f7#
- 2.Qxc5#
- 2.Qf4#
- 1...cxb4!
- threat
- 1.Qc4?
- threat
- 2.Qd5#
- 2.Qc3#
- 2.Qxc5#
- 1...Rf7+
- 2.S8xf7#
- 1...Rf3
- 2.Qd5#
- 2.Qxc5#
- 1...Rf4
- 2.Qd5#
- 2.Qxf4#
- 1...Bb3
- 2.Sg6#
- 2.Re4#
- 2.Qe4#
- 1...Be4
- 2.Rxe4#
- 2.Qc3#
- 2.Qxe4#
- 1...Bf2
- 2.S8f7#
- 2.Qd5#
- 2.Qf4#
- 1...Sd3
- 2.Sg6#
- 2.Re4#
- 2.Qd5#
- 2.Qc3#
- 2.Qe4#
- 1...Sf3
- 2.S8f7#
- 2.Qd5#
- 2.Qf4#
- 2.Qxc5#
- 1...b4
- 2.Qd5#
- 2.Qxc5#
- 1...bxc4!
- threat
- 1.e7?
- threat
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Rf7+
- 2.S8xf7#
- 1...Bxa4
- 2.Sg6#
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Bxg5
- 2.Re6#
- 1...bxa4
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Bb3
- 2.Qe4#
- 1...c4
- 2.Qxb5#
- 1...Rg1
- 2.S8f7#
- 2.Re6#
- 2.Qf4#
- 2.e8Q#
- 2.e8R#
- 1...Rh1
- 2.S8f7#
- 2.Re6#
- 2.Qf4#
- 2.e8Q#
- 2.e8R#
- 1...Rf2
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Rf3
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Rf4
- 2.Re6#
- 2.Qxf4#
- 2.e8Q#
- 2.e8R#
- 1...Rf5
- 2.Sg6#
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Rf8
- 2.Re6#
- 1...Bb1
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Bd1
- 2.Sg6#
- 2.Re4#
- 2.Re6#
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Bd3
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Be4
- 2.Rxe4#
- 2.Re6#
- 2.Qxe4#
- 2.e8Q#
- 2.e8R#
- 1...Bf5
- 2.S6f7#
- 2.S8f7#
- 1...Bg6
- 2.Sxg6#
- 2.Re6#
- 1...Bh7
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Bf2
- 2.S8f7#
- 2.Re6#
- 2.Qf4#
- 2.e8Q#
- 2.e8R#
- 1...Bg3
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Sg2
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Sd3
- 2.Sg6#
- 2.Re4#
- 2.Re6#
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Sf3
- 2.S8f7#
- 2.Re6#
- 2.Qf4#
- 2.e8Q#
- 2.e8R#
- 1...b4
- 2.Re6#
- 2.e8Q#
- 2.e8R#
- 1...Rf6!
- threat
- 1.S6f7+?
- Keys
- 1.Sf5!
- threat
- 2.Rxc5#
- 1...Kxf5
- 2.Rxc5#
- 1...Rxf5
- 2.Sg6#
- 1...Bxf5
- 2.Sf7#
- 1...Bb3
- 2.Qe4#
- 1...c4
- 2.Qxb5#
- 1...Be4
- 2.Qxe4#
- 1...Bf2
- 2.Qf4#
- 1...Sd3
- 2.Qe4#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 4
- Sets
- R(b);N_GUARD::QAB1(B),XR(b)
- R(b);S_CUTB(c)::S(I)
- R(b);CHECK,N_GUARD::S(I),XR(b)
- B(c);N_GUARD::QAR1(B)
- B(c);N_GUARD,XQ(B)::S(I)
- B(c);N_GUARD::S(I),XB(c)
- P(f);OGATEB::QAR(B),XP(e)
- Tries
- Try
- S(G);CHECK
- Vars
- K(g);P-FLIGHT::R(E),XP(f)
- Refutation
- R(b);CHECK,XS(G)
- Try
- Q(B);XB(c)
- Threat
- DUALS(7)
- Vars
- S(a);XQ(B)::S(I)
- P(f);::QAR1(B)
- Refutation
- R(b);
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- R(b);CHECK,N_GUARD::S(I),XR(b)
- R(b);::QAR1(B)
- P(f);OGATEB::QAR(B),XP(e)
- Refutation
- B(c);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- R(b);CHECK,N_GUARD::S(I),XR(b)
- B(c);N_GUARD::QAR1(B)
- R(b);::QAR2(B),XP(f)
- R(b);N_GUARD::QAB1(B),XR(b)
- Refutation
- P(f);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- R(b);CHECK,N_GUARD::S(I),XR(b)
- Refutation
- P(e);XQ(B)
- Try
- P(F);
- Threat
- DUALS(3)
- Vars
- R(b);CHECK,N_GUARD::S(I),XR(b)
- B(d);XP(D)::R1(E)
- B(c);N_GUARD::QAR1(B)
- P(f);OGATEB::QAR(B),XP(e)
- R(b);::R1(E)
- Refutation
- R(b);
- Try
- Actual
- S(G);
- Threat
- R(E),XP(f)
- Vars
- K(g);P-FLIGHT,XS(G)::R(E),XP(f)
- R(b);SBLOCK,XS(G)::S(I)
- B(c);SBLOCK,XS(G)::S(I)
- B(c);N_GUARD::QAR1(B)
- P(f);OGATEB::QAR(B),XP(e)
- B(c);N_GUARD::QAR1(B),XB(c)
- B(d);S_CUTR(b)::QAB1(B)
- S(a);S_CUTB(c)::QAR1(B)
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).