MESON Chess Problem Database
Problem Display
PID: 272027 (3Qr2r/P2P1p1P/8/1R5p/1B1n1npN/1p2k2P/qP2PN2/2b1RK2 w - - 0 1)
Shanshin, Valery Yurevich
2nd HM., Schakend Nederland, 1980
#2
13 + 11
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Sd1#
- 1...Re5
- 2.Rxe5#
- 1...Rxd8
- 2.Re5#
- 1...Ref8
- 2.Re5#
- 1...Reg8
- 2.Re5#
- 1...Sc2
- 2.Sf5#
- 1...Sdxe2
- 2.Qb6#
- 1...Sf3
- 2.Sf5#
- 1...Sxb5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sde6
- 2.Sf5#
- 1...Sfxe2
- 2.Qg5#
- 1...Sg2
- 2.Sxg2#
- 1...Sd3
- 2.Sg2#
- 1...Sxh3
- 2.Sg2#
- 1...Sd5
- 2.Sg2#
- 1...Sfe6
- 2.Sg2#
- 1...Sg6
- 2.Sg2#
- 1...Re4
- Tries
- 1.Qg5?
- threat
- 2.Sg2#
- 1...Sxe2
- 2.Qc5#
- 1...Sxb5
- 2.Sf5#
- 1...Sc2
- 2.Sf5#
- 1...Sf3
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Se6
- 2.Sf5#
- 2.Qe5#
- 1...gxh3!
- threat
- 1.Qb6?
- threat
- 2.Sf5#
- 1...Sxe2
- 2.Qh6#
- 1...Sxh3
- 2.Sg2#
- 1...Sg2
- 2.Sxg2#
- 1...Sd3
- 2.Sg2#
- 1...Sd5
- 2.Sg2#
- 1...Se6
- 2.Sg2#
- 1...Sg6
- 2.Sg2#
- 1...Re5
- 2.Rxe5#
- 1...f5
- 2.Sxf5#
- 1...Qb1!
- threat
- 1.Qe7+?
- 1...Sde6
- 2.Sf5#
- 1...Sfe6
- 2.Sg2#
- 1...Rxe7!
- 1...Sde6
- 1.Qxe8+?
- 1...Sde6
- 2.Sf5#
- 1...Sfe6
- 2.Sg2#
- 1...Rxe8!
- 1...Sde6
- 1.a8Q?
- threat
- 2.Sd1#
- 1...Sdxe2
- 2.Sf5#
- 2.Qb6#
- 1...Sxb5
- 2.Sf5#
- 1...Sfxe2
- 2.Sg2#
- 2.Qg5#
- 1...Sxh3
- 2.Sg2#
- 1...Sc2
- 2.Sf5#
- 1...Sf3
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sde6
- 2.Sf5#
- 2.Qe4#
- 1...Sg2
- 2.Sxg2#
- 1...Sd3
- 2.Sg2#
- 1...Sd5
- 2.Sg2#
- 1...Sfe6
- 2.Sg2#
- 2.Qe4#
- 1...Sg6
- 2.Sg2#
- 1...Qxa8!
- threat
- 1.a8B?
- threat
- 2.Sd1#
- 1...Sdxe2
- 2.Sf5#
- 2.Qb6#
- 1...Sxb5
- 2.Sf5#
- 1...Sfxe2
- 2.Sg2#
- 2.Qg5#
- 1...Sxh3
- 2.Sg2#
- 1...Sc2
- 2.Sf5#
- 1...Sf3
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sde6
- 2.Sf5#
- 1...Sg2
- 2.Sxg2#
- 1...Sd3
- 2.Sg2#
- 1...Sd5
- 2.Sg2#
- 1...Sfe6
- 2.Sg2#
- 1...Sg6
- 2.Sg2#
- 1...Qxa8!
- threat
- 1.dxe8Q+?
- 1...Sde6
- 2.Sf5#
- 2.Bc5#
- 2.Re5#
- 2.Qb6#
- 1...Sfe6
- 2.Sg2#
- 2.Qg5#
- 1...Rxe8!
- 1...Sde6
- 1.dxe8R+?
- 1...Sde6
- 2.Sf5#
- 2.Bc5#
- 2.Re5#
- 2.Qb6#
- 1...Sfe6
- 2.Sg2#
- 2.Qg5#
- 1...Rxe8!
- 1...Sde6
- 1.Qg5?
- Keys
- 1.Qa8!
- threat
- 2.Sd1#
- 1...Rxa8
- 2.Re5#
- 1...Sdxe2
- 2.Sf5#
- 1...Sxb5
- 2.Sf5#
- 1...Sfxe2
- 2.Sg2#
- 1...Sxh3
- 2.Sg2#
- 1...Sc2
- 2.Sf5#
- 1...Sf3
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sc6
- 2.Sf5#
- 1...Sde6
- 2.Sf5#
- 2.Qe4#
- 1...Sg2
- 2.Sxg2#
- 1...Sd3
- 2.Sg2#
- 1...Sd5
- 2.Sg2#
- 1...Sfe6
- 2.Sg2#
- 2.Qe4#
- 1...Sg6
- 2.Sg2#
- threat
- 1.Qa8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(j);SBLOCK::S(E)
- R(j);N_GUARD::R(I),XR(j)
- R(j);N_GUARD,XQ(M)::R(I)
- R(j);N_GUARD::R(I)
- S(e);N_GUARD::S(H)
- S(e);OGATEB,P_SPINS(e),XP(D)::QAB(M)
- S(e);N_GUARD,XR(I)::S(H)
- S(e);N_GUARD::S(H),XS(e)
- S(f);OGATEB,P_SPINS(f),XP(D)::QAB(M)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
- S(f);N_GUARD,XP(F)::S(H)
- Tries
- Try
- Q(M);P_PINS(f)
- Threat
- S(H)
- Vars
- S(e);N_SPINS(f),OGATEB,P_SPINS(e),XP(D)::QAB(M)
- S(e);N_GUARD,XR(I)::S(H)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- Refutation
- P(g);XP(F)
- Try
- Q(M);P_PINS(e)
- Threat
- S(H)
- Vars
- S(f);N_SPINS(e),OGATEB,P_SPINS(f),XP(D)::QAB(M)
- S(f);N_GUARD,XP(F)::S(H)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
- R(j);N_GUARD::R(I),XR(j)
- P(i);::S(H),XP(i)
- Refutation
- Q(b);
- Try
- Q(M);CHECK
- Vars
- S(e);P_SPINS(e)::S(H)
- S(f);P_SPINS(f)::S(H)
- Refutation
- R(j);XQ(M)
- Try
- Q(M);CHECK,XR(j)
- Vars
- S(e);P_SPINS(e)::S(H)
- S(f);P_SPINS(f)::S(H)
- Refutation
- R(k);XQ(M)
- Try
- P(J);
- Threat
- S(E)
- Vars
- S(e);N_GUARD,XR(I)::S(H)
- S(f);N_GUARD,XP(F)::S(H)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
- Refutation
- Q(b);XQ(J)
- Try
- P(J);
- Threat
- S(E)
- Vars
- S(e);N_GUARD,XR(I)::S(H)
- S(f);N_GUARD,XP(F)::S(H)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
- Refutation
- Q(b);XB(J)
- Try
- P(K);CHECK,XR(j)
- Refutation
- R(k);XQ(K)
- Try
- P(K);CHECK,XR(j)
- Refutation
- R(k);XR(K)
- Try
- Actual
- Q(M);
- Threat
- S(E)
- Vars
- R(j);N_GUARD,XQ(M)::R(I)
- S(e);N_GUARD,P_SPINS(e),XP(D)::S(H)
- S(e);N_GUARD,XR(I)::S(H)
- S(f);N_GUARD,P_SPINS(f),XP(D)::S(H)
- S(f);N_GUARD,XP(F)::S(H)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- S(f);N_GUARD::S(H),XS(f)
- S(f);N_GUARD::S(H)
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).