MESON Chess Problem Database
Problem Display
PID: 15878 (4R3/B7/8/pK1N3B/1bR2p1q/1N1k2np/p5pQ/rb5n w - - 0 1)
Shanshin, Valery Yurevich
4th Prize, Shakhmaty, 1988
#2
8 + 12
| 3297 | FIDE Album (1986-1988) | 1995 |
SOLUTION
- SOUND
- Sets
- 1...Qe7
- 2.Sxf4#
- 1...Qd8
- 2.Sxf4#
- 1...Bc2
- 2.Rd4#
- 1...Bd2
- 2.Sc5#
- 1...Ba3
- 2.Rc3#
- 1...Bc3
- 2.Rxc3#
- 1...Bc5
- 2.Rc3#
- 1...Bd6
- 2.Rc3#
- 1...Bf8
- 2.Rc3#
- 1...Sf1
- 2.Be2#
- 2.Bg6#
- 1...Se2
- 2.Bxe2#
- 2.Bg6#
- 1...Sf5
- 2.Be2#
- 1...g1S
- 2.Sc1#
- 2.Rd4#
- 1...g1B
- 2.Sc1#
- 1...g1R
- 2.Rd4#
- 1...f3
- 2.Re3#
- 1...a4
- 2.Sxb4#
- 1...Qe7
- Tries
- 1.Bd1?
- threat
- 2.Rd4#
- 1...g1Q
- 2.Sc1#
- 1...g1B
- 2.Sc1#
- 1...Qh8
- 2.Sxf4#
- 1...Bc3
- 2.Rxc3#
- 1...Bc5
- 2.Rc3#
- 1...Se2
- 2.Bxe2#
- 1...Sf5
- 2.Be2#
- 1...f3
- 2.Re3#
- 1...Qf6!
- threat
- 1.Bg6+?
- 1...Sf5
- 2.Bxf5#
- 1...Se4!
- 1...Sf5
- 1.Re2?
- threat
- 2.Sc1#
- 2.Rd4#
- 1...Qxh5
- 2.Sc1#
- 1...Sxe2
- 2.Bg6#
- 1...Sxh5
- 2.Sc1#
- 1...Qg4
- 2.Sc1#
- 1...f3
- 2.Sc1#
- 2.Re3#
- 1...g1B
- 2.Sc1#
- 1...g1R
- 2.Rd4#
- 1...Qf6
- 2.Sc1#
- 1...Bc2
- 2.Rd4#
- 1...Bd2
- 2.Sc5#
- 2.Rxd2#
- 1...Ba3
- 2.Rd2#
- 2.Rc3#
- 2.Rd4#
- 1...Bc3
- 2.Sc1#
- 2.Sc5#
- 2.Rxc3#
- 1...Bc5
- 2.Sc1#
- 2.Sxc5#
- 2.Rd2#
- 2.Rc3#
- 1...Sf5
- 2.Sc1#
- 1...g1Q!
- threat
- 1.Qxg3+?
- 1...Qxg3
- 2.Be2#
- 1...fxg3
- 2.Be2#
- 2.Re3#
- 1...f3
- 2.Re3#
- 2.Qxf3#
- 1...Sxg3!
- 1...Qxg3
- 1.Qxg2?
- threat
- 2.Sc1#
- 2.Rd4#
- 2.Qf3#
- 1...Qxh5
- 2.Sc1#
- 2.Rd4#
- 1...Qf6
- 2.Sc1#
- 2.Qf3#
- 1...Qe7
- 2.Sc1#
- 2.Sxf4#
- 2.Rd4#
- 1...Qg4
- 2.Sc1#
- 2.Rd4#
- 1...Bc2
- 2.Rd4#
- 2.Qf3#
- 2.Qxc2#
- 1...Bd2
- 2.Sc5#
- 2.Qxd2#
- 1...Ba3
- 2.Rc3#
- 2.Rd4#
- 2.Qf3#
- 2.Qd2#
- 1...Bc3
- 2.Sc1#
- 2.Sc5#
- 2.Rxc3#
- 1...Bc5
- 2.Sc1#
- 2.Sxc5#
- 2.Rc3#
- 2.Qd2#
- 1...Sf2
- 2.Qf3#
- 1...Sf1
- 2.Sc1#
- 2.Be2#
- 2.Bg6#
- 2.Rd4#
- 2.Qxf1#
- 2.Qe4#
- 2.Qe2#
- 2.Qg6#
- 1...Se2
- 2.Bxe2#
- 2.Bg6#
- 2.Qf3#
- 2.Qe4#
- 2.Qxe2#
- 2.Qg6#
- 1...Sf5
- 2.Sc1#
- 2.Be2#
- 2.Qf1#
- 2.Qe4#
- 2.Qe2#
- 1...f3
- 2.Sc1#
- 2.Re3#
- 2.Qxf3#
- 1...hxg2!
- threat
- 1.Bd1?
- Keys
- 1.Be3!
- threat
- 2.Sc1#
- 1...fxe3
- 2.Rxe3#
- 1...Bc3
- 2.Rxc3#
- 1...g1Q
- 2.Rd4#
- 1...g1R
- 2.Rd4#
- 1...Bc2
- 2.Rd4#
- 1...Bd2
- 2.Sc5#
- 1...Ba3
- 2.Rc3#
- 1...Se2
- 2.Bg6#
- threat
- 1.Be3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(k);N_GUARD::S(E),XP(j)
- B(b);SBLOCK::R1(C)
- B(i);N_GUARD,SBLOCK::S(B)
- B(i);N_GUARD::R1(C)
- B(i);N_GUARD::R1(C),XB(i)
- S(g);N_GUARD::B(F)
- P(e);::S(B)
- P(e);::R1(C)
- P(j);N_GUARD::R1(H)
- P(l);N_GUARD::S(E),XB(i)
- Tries
- Try
- B(F);
- Threat
- R1(C)
- Vars
- P(e);::S(B)
- Q(k);N_GUARD::S(E),XP(j)
- B(i);N_GUARD::R1(C),XB(i)
- B(i);N_GUARD::R1(C)
- S(g);N_GUARD::B(F),XS(g)
- S(g);N_GUARD::B(F)
- P(j);N_GUARD::R1(H)
- Refutation
- Q(k);
- Try
- B(F);CHECK
- Vars
- S(g);N_GUARD,P_SPINS(g)::B(F),XS(g)
- Refutation
- S(g);P_SPINS(g)
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- Q(k);P_PINS(E),XB(F)::S(B)
- S(g);N_GUARD,SBLOCK,XR(H)::B(F)
- S(g);XB(F)::S(B)
- Q(k);::S(B)
- P(e);::S(B)
- P(e);::R1(C)
- B(b);::R1(C)
- S(g);::S(B)
- Refutation
- P(e);
- Try
- Q(A);CHECK,XS(g)
- Vars
- Q(k);XQ(A)::B(F)
- Refutation
- S(c);XQ(A)
- Try
- Q(A);XP(e)
- Threat
- DUALS(3)
- Vars
- S(c);::QAR2(A)
- Refutation
- P(h);XQ(A)
- Try
- Actual
- B(G);
- Threat
- S(B)
- Vars
- P(j);OGATE,XB(G)::R1(H),XP(j)
- B(i);N_GUARD::R1(C),XB(i)
- P(e);::R1(C)
- B(b);SBLOCK::R1(C)
- B(i);N_GUARD::S(B)
- B(i);N_GUARD::R1(C)
- S(g);N_GUARD,SBLOCK::B(F)
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).