MESON Chess Problem Database
Problem Display
PID: 235064 (4Q3/3p4/1K4pr/2P2nR1/2pk4/1p2N3/1qnBR3/1B2N1r1 w - - 0 1)
Shanshin, Valery Yurevich
64 Shakhmatnoe obozrenie, 1990
#2
9 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rgh1
- 2.Rg4#
- 1...Rg4
- 2.Rxg4#
- 1...Sa1
- 2.Sf3#
- 2.Qe4#
- 1...Sxe1
- 2.Qe4#
- 1...Sa3
- 2.Sf3#
- 2.Qe4#
- 1...Scxe3
- 2.Qe4#
- 1...Sb4
- 2.Sf3#
- 2.Qe4#
- 1...Sfxe3
- 2.Qe5#
- 1...Sg3
- 2.Rd5#
- 2.Qe5#
- 1...Sh4
- 2.Rd5#
- 2.Qe5#
- 1...Sd6
- 2.Rd5#
- 2.Qe5#
- 1...Sg7
- 2.Rd5#
- 2.Qe5#
- 1...Rgh1
- Tries
- 1.Sd1?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Kd5
- 2.Qxd7#
- 2.Qe4#
- 1...Rxe1
- 2.Qe4#
- 1...c3
- 2.Qe4#
- 1...Rg4
- 2.Qe5#
- 1...Rh4
- 2.Qe5#
- 1...Sce3
- 2.Qe4#
- 1...Sfe3
- 2.Qe5#
- 1...Sg3
- 2.Qxd7#
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...d5
- 2.Qe5#
- 1...d6
- 2.Qe4#
- 1...Se7!
- threat
- 1.Sf1?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Kd5
- 2.Qxd7#
- 2.Qe4#
- 1...c3
- 2.Qe4#
- 1...Rg4
- 2.Qe5#
- 1...Rh4
- 2.Qe5#
- 1...Sce3
- 2.Qe4#
- 1...Sfe3
- 2.Qe5#
- 1...Sg3
- 2.Qxd7#
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...d5
- 2.Qe5#
- 1...d6
- 2.Qe4#
- 1...Se7!
- threat
- 1.S3xc2+?
- 1...Kd5
- 2.Qxd7#
- 2.Qf7#
- 2.Qe4#
- 2.Qa8#
- 2.Qg8#
- 1...Qxc2
- 2.Qe5#
- 1...bxc2+!
- 1...Kd5
- 1.S3g2?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Kd5
- 2.Qxd7#
- 2.Qe4#
- 1...Rxe1
- 2.Qe4#
- 1...c3
- 2.Qe4#
- 1...Rh4
- 2.Qe5#
- 1...Sce3
- 2.Qe4#
- 1...Sfe3
- 2.Qe5#
- 1...Sg3
- 2.Qxd7#
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...d5
- 2.Rg4#
- 2.Qe5#
- 1...d6
- 2.Qe4#
- 1...Se7!
- threat
- 1.Sg4?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Kd5
- 2.Qxd7#
- 2.Qe4#
- 1...Rxe1
- 2.Qe4#
- 1...Rxg4
- 2.Qe5#
- 1...c3
- 2.Qe4#
- 1...Sfe3
- 2.Qe5#
- 1...Sg3
- 2.Qxd7#
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...d5
- 2.Qe5#
- 1...d6
- 2.Qe4#
- 1...Se7!
- threat
- 1.Sd5?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Kxd5
- 2.Qxd7#
- 2.Qe4#
- 1...Rxe1
- 2.Qe4#
- 1...c3
- 2.Qe4#
- 1...Rg4
- 2.Qe5#
- 1...Rh4
- 2.Qe5#
- 1...Sce3
- 2.Qe4#
- 1...Sfe3
- 2.Qe5#
- 1...Sg3
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...d6
- 2.Qe4#
- 1...Se7!
- threat
- 1.Sxf5+?
- 1...Kd5
- 2.Qxd7#
- 2.Qf7#
- 2.Qe4#
- 2.Qa8#
- 2.Qg8#
- 1...gxf5+!
- 1...Kd5
- 1.Qxd7+?
- 1...Ke4
- 2.Sxf5#
- 1...Ke5
- 2.Sg4#
- 1...Sd6!
- 1...Ke4
- 1.Qe6?
- threat
- 2.Qd5#
- 1...Scxe3
- 2.Sf3#
- 2.Qe4#
- 1...Sfxe3
- 2.Qe5#
- 1...Se7
- 2.Qxc4#
- 2.Qe5#
- 1...Sb4
- 2.Sf3#
- 2.Qe4#
- 2.Qf6#
- 1...d5
- 2.Qxd5#
- 1...dxe6!
- threat
- 1.Sd1?
- Keys
- 1.Qf7!
- threat
- 2.Qd5#
- 1...Ke4
- 2.Sxf5#
- 1...Ke5
- 2.S3xc2#
- 1...Scxe3
- 2.Sf3#
- 1...Sfxe3
- 2.Qf4#
- 1...Se7
- 2.Qxc4#
- 2.Qf4#
- 1...Sb4
- 2.Sf3#
- 2.Qf6#
- 1...d5
- 2.Qxd5#
- threat
- 1.Qf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(a);N_GUARD::R(G)
- R(a);N_GUARD::R(G),XR(a)
- S(c);XS(B)::QAR1(I)
- S(c);XS(E)::QAR1(I)
- S(g);XS(E)::QAB1(I)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(a);XS(B)::QAR1(I)
- P(e);::QAR1(I)
- R(a);::QAB1(I)
- R(i);::QAB1(I)
- S(c);::QAR1(I)
- S(g);::QAB1(I)
- P(j);::QAB1(I)
- P(j);::QAR1(I)
- Refutation
- S(g);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(e);::QAR1(I)
- R(a);::QAB1(I)
- R(i);::QAB1(I)
- S(c);::QAR1(I)
- S(g);::QAB1(I)
- P(j);::QAB1(I)
- P(j);::QAR1(I)
- Refutation
- S(g);
- Try
- S(E);CHECK,XS(c)
- Vars
- Q(b);XS(E)::QAB1(I)
- Refutation
- P(d);CHECK,XS(E)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(a);XS(B)::QAR1(I)
- P(e);::QAR1(I)
- R(i);::QAB1(I)
- S(c);::QAR1(I)
- S(g);::QAB1(I)
- P(j);::QAR1(I)
- Refutation
- S(g);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(a);XS(B)::QAR1(I)
- R(a);XS(E)::QAB1(I)
- P(e);::QAR1(I)
- S(g);::QAB1(I)
- P(j);::QAB1(I)
- P(j);::QAR1(I)
- Refutation
- S(g);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(a);XS(B)::QAR1(I)
- P(e);::QAR1(I)
- R(a);::QAB1(I)
- R(i);::QAB1(I)
- S(c);::QAR1(I)
- S(g);::QAB1(I)
- P(j);::QAR1(I)
- Refutation
- S(g);
- Try
- S(E);CHECK,XS(g)
- Refutation
- P(h);CHECK,XS(E)
- Try
- Q(I);CHECK,XP(j)
- Vars
- K(f);P-FLIGHT,P_SPINS(c)::R(D)+S(E),XS(g)
- K(f);P_SPINS(g),S_FLIGHT::R(D)+S(E),DCHECK
- Refutation
- S(g);P_SPINS(g)
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- S(g);XS(E)::QAB1(I)
- P(j);::QAR1(I),XP(j)
- Refutation
- P(j);XQ(I)
- Try
- Actual
- Q(I);
- Threat
- QAR1(I)
- Vars
- K(f);P-FLIGHT,P_SPINS(c)::R(D)+S(E),XS(g)
- K(f);P_SPINS(g),S_FLIGHT::R(D)+S(E),XS(c)
- S(c);XS(E)::S(B)
- S(g);OGATE,XS(E)::QAR2(I)
- P(j);::QAR1(I),XP(j)
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).