MESON Chess Problem Database
Problem Display
PID: 237821 (B2NR2n/R2pp1Q1/K2kN3/1P6/pPP3b1/b7/2qr4/8 w - - 0 1)
Shanshin, Valery Yurevich
3rd Prize, Shakhmaty v SSSR, 1983
#2
10 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.c5#
- 1...Qd1
- 2.c5#
- 1...Qb3
- 2.c5#
- 1...Qd3
- 2.c5#
- 1...Qe4
- 2.c5#
- 1...Qg6
- 2.c5#
- 1...Qh7
- 2.c5#
- 1...Qa2
- 2.c5#
- 1...Qb2
- 2.c5#
- 1...Re2
- 2.Qd4#
- 1...Rf2
- 2.Qd4#
- 1...Rg2
- 2.Qd4#
- 1...Rh2
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Bd1
- 2.Qg3#
- 1...Be2
- 2.Qg3#
- 1...Bf3
- 2.Qg3#
- 1...Bh3
- 2.Qg3#
- 1...Bf5
- 2.Qg3#
- 1...Bh5
- 2.Qg3#
- 1...Bxe6
- 2.Qg3#
- 1...Qb1
- Tries
- 1.Sd4?
- threat
- 2.Qxe7#
- 1...Qe4
- 2.c5#
- 1...Qh7
- 2.c5#
- 1...Be6
- 2.Qg3#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e5
- 2.Qxe5#
- 2.Qf8#
- 2.Qe7#
- 1...e6
- 2.Rxd7#
- 1...Re2!
- threat
- 1.Sf4?
- threat
- 2.Qxe7#
- 1...Qe4
- 2.c5#
- 1...Qh7
- 2.c5#
- 1...Re2
- 2.Qd4#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e5
- 2.Qxe5#
- 2.Qf8#
- 2.Qe7#
- 1...e6
- 2.Rxd7#
- 1...Be6!
- threat
- 1.Sc5?
- threat
- 2.Qxe7#
- 1...Qe4
- 2.Sxe4#
- 1...Re2
- 2.Qd4#
- 1...Be6
- 2.Qg3#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e5
- 2.Qxe5#
- 2.Qf8#
- 2.Qe7#
- 1...e6
- 2.Rxd7#
- 1...Qh7!
- threat
- 1.Sg5?
- threat
- 2.Qxe7#
- 1...Qe4
- 2.Sxe4#
- 2.c5#
- 1...Qh7
- 2.c5#
- 1...Re2
- 2.Qd4#
- 1...Sg6
- 2.Sgf7#
- 2.Sdf7#
- 1...Sf7
- 2.Sgxf7#
- 2.Sdxf7#
- 1...e5
- 2.Qxe5#
- 2.Qf8#
- 2.Qe7#
- 1...e6
- 2.Rxd7#
- 1...Be6!
- threat
- 1.Sc7?
- threat
- 2.Qxe7#
- 1...Be6
- 2.Qg3#
- 1...Qe4
- 2.c5#
- 1...Qh7
- 2.c5#
- 1...Re2
- 2.Qd4#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e5
- 2.Qxe5#
- 2.Qf8#
- 2.Qe7#
- 1...e6!
- threat
- 1.Bc6?
- threat
- 2.Rxd7#
- 1...Bxe6
- 2.Qg3#
- 1...dxe6
- 2.Rd7#
- 1...dxc6!
- threat
- 1.Rxe7?
- threat
- 2.Sb7#
- 2.Raxd7#
- 2.Rexd7#
- 1...Qxc4
- 2.Raxd7#
- 2.Rexd7#
- 1...dxe6
- 2.Sb7#
- 2.Rad7#
- 2.Red7#
- 1...Sf7
- 2.Raxd7#
- 2.Rexd7#
- 1...Qe4
- 2.Raxd7#
- 2.Rexd7#
- 2.c5#
- 1...Bf3
- 2.Raxd7#
- 2.Rexd7#
- 1...Bxe6!
- threat
- 1.Sd4?
- Keys
- 1.Sf8!
- threat
- 2.Qxe7#
- 1...Be6
- 2.Qg3#
- 1...Qe4
- 2.c5#
- 1...Qh7
- 2.c5#
- 1...Re2
- 2.Qd4#
- 1...Sg6
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...e5
- 2.Qxe5#
- 2.Qe7#
- 1...e6
- 2.Rxd7#
- threat
- 1.Sf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 17
- Sets
- Q(a);N_GUARD::P(B)
- R(b);N_GUARD::QAR2(G)
- R(b);N_GUARD::QAR2(G),XR(b)
- B(e);OGATE::QAB(G)
- B(e);OGATE,XS(E)::QAB(G)
- Tries
- Try
- S(E);
- Threat
- QAB1(G),XP(h)
- Vars
- Q(a);N_GUARD::P(B)
- B(e);OGATE::QAB(G)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- P(h);S_CUTB(e)::R1(F),XP(g)
- Refutation
- R(b);
- Try
- S(E);
- Threat
- QAB1(G),XP(h)
- Vars
- Q(a);N_GUARD::P(B)
- R(b);N_GUARD::QAR2(G)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- P(h);S_CUTB(e)::R1(F),XP(g)
- Refutation
- B(e);
- Try
- S(E);
- Threat
- QAB1(G),XP(h)
- Vars
- Q(a);N_GUARD::S(E),XQ(a)
- R(b);N_GUARD::QAR2(G)
- B(e);OGATE::QAB(G)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- P(h);S_CUTB(e)::R1(F),XP(g)
- Refutation
- Q(a);
- Try
- S(E);
- Threat
- QAB1(G),XP(h)
- Vars
- Q(a);N_GUARD::P(B)
- R(b);N_GUARD::QAR2(G)
- P(h);S_CUTB(e)::R1(F),XP(g)
- Refutation
- B(e);
- Try
- S(E);
- Threat
- QAB1(G),XP(h)
- Vars
- B(e);OGATE::QAB(G)
- Q(a);N_GUARD::P(B)
- R(b);N_GUARD::QAR2(G)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- Refutation
- P(h);
- Try
- B(H);
- Threat
- R1(F),XP(g)
- Vars
- B(e);OGATE,XS(E)::QAB(G)
- P(g);XS(E)::R1(F)
- Refutation
- P(g);XB(H)
- Try
- R(J);XP(h)
- Threat
- DUALS(3)
- Refutation
- B(e);XS(E)
- Try
- Actual
- S(E);
- Threat
- QAB1(G),XP(h)
- Vars
- B(e);OGATE::QAB(G)
- Q(a);N_GUARD::P(B)
- R(b);N_GUARD::QAR2(G)
- S(i);N_GUARD::S(I)
- S(i);N_GUARD::S(I),XS(i)
- P(h);S_CUTB(e)::R1(F),XP(g)
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).