MESON Chess Problem Database
Problem Display
PID: 235067 (4R3/1Q6/2N1p3/3b1p2/2pBkN2/3R2P1/8/4Kn2 w - - 0 1)
Shanshin, Valery Yurevich
64 Shakhmatnoe obozrenie, 1991
#2
8 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bxc6
- 2.Rxe6#
- 2.Qxc6#
- 1...Sd2
- 2.Re3#
- 1...Sh2
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...e5
- 2.Rxe5#
- 1...Bxc6
- Tries
- 1.Kxf1?
- threat
- 2.Re3#
- 1...Bxc6
- 2.Rxe6#
- 2.Qxc6#
- 1...cxd3!
- threat
- 1.Sh3?
- threat
- 2.Sf2#
- 1...Kxd3
- 2.Qb1#
- 1...Sxg3
- 2.Re3#
- 1...cxd3
- 2.Sg5#
- 1...Se3
- 2.Rxe3#
- 1...f4
- 2.Qh7#
- 1...Bxc6!
- threat
- 1.Qb1?
- threat
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Re3#
- 1...Bxc6
- 2.Rxe6#
- 1...cxd3
- 2.Qxd3#
- 1...Se3
- 2.Rxe3#
- 1...Sd2
- 2.Re3#
- 1...c3
- 2.Rxc3#
- 2.Re3#
- 1...Sxg3!
- threat
- 1.Qb2?
- threat
- 2.Qg2#
- 1...Se3
- 2.Rxe3#
- 1...Sd2
- 2.Re3#
- 1...Sh2
- 2.Re3#
- 2.Qe2#
- 1...Sxg3!
- threat
- 1.Qb5?
- threat
- 2.Qxd5#
- 1...Bxc6
- 2.Rxe6#
- 2.Qxc6#
- 2.Qe5#
- 1...Se3
- 2.Rxe3#
- 1...Sxg3!
- threat
- 1.Qc7?
- threat
- 2.Qe5#
- 1...Se3
- 2.Rxe3#
- 1...e5
- 2.Rxe5#
- 2.Qxe5#
- 1...cxd3!
- threat
- 1.Qd7?
- threat
- 2.Qxd5#
- 1...Bxc6
- 2.Rxe6#
- 2.Qxc6#
- 2.Qxe6#
- 1...Se3
- 2.Rxe3#
- 1...Sxg3!
- threat
- 1.Qg7?
- threat
- 2.Qe5#
- 1...Se3
- 2.Rxe3#
- 1...e5
- 2.Rxe5#
- 2.Qxe5#
- 1...cxd3!
- threat
- 1.Qh7?
- threat
- 2.Qh1#
- 1...Se3
- 2.Rxe3#
- 1...Sd2
- 2.Re3#
- 1...Sh2
- 2.Re3#
- 1...Sxg3!
- threat
- 1.Qb8?
- threat
- 2.Qe5#
- 1...Se3
- 2.Rxe3#
- 1...e5
- 2.Rxe5#
- 2.Qxe5#
- 1...cxd3!
- threat
- 1.Kxf1?
- Keys
- 1.Sxe6!
- threat
- 2.Sc5#
- 1...Kxd3
- 2.Qb1#
- 1...Bxc6
- 2.Sf4#
- 1...Bxe6
- 2.Sb4#
- 1...Sxg3
- 2.Re3#
- 1...cxd3
- 2.Sg5#
- 1...Se3
- 2.Rxe3#
- 1...f4
- 2.Qh7#
- threat
- 1.Sxe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- S(a);N_GUARD::R1(B)
- S(a);N_GUARD::R1(B),XS(a)
- P(f);OGATE::R1(H),XP(f)
- Tries
- Try
- K(A);P-FLIGHT,XS(a)
- Threat
- R1(B)
- Refutation
- P(b);XR(B)
- Try
- S(E);
- Threat
- S(E)
- Vars
- K(c);N_SPINP(f),OGATEB,S_FLIGHT,XR(B)::QAB(G)
- S(a);N_GUARD,XP(C)::R1(B)
- P(b);SBLOCK,XR(B)::S(E)
- S(a);N_GUARD::R1(B),XS(a)
- P(e);OGATEB::QAB(G)
- Refutation
- B(d);P_SPINB(d),XS(F)
- Try
- Q(G);
- Threat
- DUALS(4)
- Vars
- B(d);N_GUARD,XS(F)::R(H),XP(f)
- P(b);N_SPINP(f),OGATE,P_SPINP(b),XR(B)::QAB1(G),XP(b)
- S(a);::QAB(G)+R(B),DCHECK,XS(a)
- S(a);::QAB(G)+R(B),DCHECK
- Refutation
- S(a);XP(C)
- Try
- Q(G);
- Threat
- QAB(G)
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- S(a);N_GUARD::R1(B)
- Refutation
- S(a);XP(C)
- Try
- Q(G);
- Threat
- QAB1(G),XB(d)
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- Refutation
- S(a);XP(C)
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- Refutation
- P(b);XR(B)
- Try
- Q(G);
- Threat
- QAB1(G),XB(d)
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- Refutation
- S(a);XP(C)
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- Refutation
- P(b);XR(B)
- Try
- Q(G);N_PINP(f),P_PINP(e)
- Threat
- QAB(G)
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- S(a);N_GUARD::R1(B)
- Refutation
- S(a);XP(C)
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- Refutation
- P(b);XR(B)
- Try
- Actual
- S(E);XP(f)
- Threat
- R(H)+S(E),DCHECK
- Vars
- K(c);OGATEB,S_FLIGHT,XR(B)::QAB(G)
- B(d);N_GUARD,P_SPINB(d),XS(F)::R(H)+S(E)
- B(d);P_SPINB(d),XS(E)::QAB(G)+S(F)
- S(a);N_GUARD,XP(C)::R1(B)
- P(b);SBLOCK,XR(B)::R(H)+S(E),DCHECK
- S(a);N_GUARD::R1(B),XS(a)
- P(e);OGATEB::QAB(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).