MESON Chess Problem Database
Problem Display
PID: 235536 (5R2/5B1K/8/3N4/b1QPknP1/8/8/4Nn2 w - - 0 1)
Erokhin, Vladimir Alekseevich
Shakhmaty v SSSR, 1979
#2
8 + 4
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Se3
- 2.Sc3#
- 2.Sf6#
- 1...Se2
- 2.Bg6#
- 2.Qd3#
- 1...Sg2
- 2.Bg6#
- 2.Qd3#
- 1...Sd3
- 2.Bg6#
- 2.Qxd3#
- 1...Sh3
- 2.Bg6#
- 2.Qd3#
- 1...Sh5
- 2.Bg6#
- 2.Qd3#
- 1...Se6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- 2.Qd3#
- 1...Se3
- Tries
- 1.Bh5?
- threat
- 2.Rxf4#
- 1...Sxd5
- 2.Qd3#
- 1...Se2
- 2.Bg6#
- 1...Sg2
- 2.Bg6#
- 1...Sd3
- 2.Bg6#
- 1...Sh3
- 2.Bg6#
- 1...Se6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- 1...Sxh5!
- threat
- 1.Be6?
- threat
- 2.Bf5#
- 2.Rxf4#
- 1...Sxd5
- 2.Qd3#
- 1...Bd7
- 2.Rxf4#
- 1...Se3
- 2.Sc3#
- 2.Sf6#
- 2.Rxf4#
- 1...Sg3
- 2.Rxf4#
- 1...Se2
- 2.Bf5#
- 2.Qd3#
- 1...Sg2
- 2.Bf5#
- 2.Qd3#
- 1...Sd3
- 2.Bf5#
- 2.Qxd3#
- 1...Sh3
- 2.Bf5#
- 2.Qd3#
- 1...Sh5
- 2.Bf5#
- 2.Qd3#
- 1...Sg6
- 2.Bf5#
- 2.Qd3#
- 1...Sxe6!
- threat
- 1.Bg8?
- threat
- 2.Rxf4#
- 1...Sxd5
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sh3
- 2.Qd3#
- 1...Sh5
- 2.Qd3#
- 1...Sg6
- 2.Qd3#
- 1...Se6!
- threat
- 1.Re8+?
- 1...Se6
- 2.Bg6#
- 2.Rxe6#
- 1...Bxe8!
- 1...Se6
- 1.Qc2+?
- 1...Kxd4
- 2.Sf3#
- 1...Sd3
- 2.Qxd3#
- 1...Bxc2!
- 1...Kxd4
- 1.Qc3?
- threat
- 2.Sf6#
- 1...Sxd5
- 2.Bg6#
- 1...Se2
- 2.Qd3#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sh3
- 2.Qd3#
- 1...Sh5
- 2.Qd3#
- 1...Sg6
- 2.Qd3#
- 1...Se6!
- threat
- 1.Bh5?
- Keys
- 1.Be8!
- threat
- 2.Rxf4#
- 1...Sxd5
- 2.Qd3#
- 1...Se2
- 2.Bg6#
- 1...Sg2
- 2.Bg6#
- 1...Sd3
- 2.Bg6#
- 1...Sh3
- 2.Bg6#
- 1...Sh5
- 2.Bg6#
- 1...Se6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- threat
- 1.Be8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD::B(F)
- Tries
- Try
- B(F);
- Threat
- R1(H),XS(d)
- Vars
- S(d);N_GUARD,SBLOCK,XS(E)::QAB1(B)
- S(d);N_GUARD::B(F)
- S(d);N_GUARD::B(F),XS(d)
- Refutation
- S(d);XB(F)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD,XS(E)::QAB1(B)
- B(b);::R1(H),XS(d)
- S(a);::R1(H),XS(d)
- Refutation
- S(d);XB(F)
- Try
- B(F);
- Threat
- R1(H),XS(d)
- Vars
- S(d);N_GUARD,XS(E)::QAB1(B)
- S(d);N_GUARD::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- Refutation
- S(d);
- Try
- R(H);CHECK
- Refutation
- B(b);XR(H)
- Try
- Q(B);CHECK
- Vars
- K(c);P-FLIGHT,XP(C)::S(A)
- S(d);N_GUARD,P_SPINS(d)::QAB1(B),XS(d)
- Refutation
- B(b);XQ(B)
- Try
- Q(B);
- Threat
- S(E)
- Vars
- S(d);N_GUARD,SBLOCK,XS(E)::B(F)
- S(d);N_GUARD::QAB1(B)
- S(d);N_GUARD::QAB1(B),XS(d)
- Refutation
- S(d);
- Try
- Actual
- B(F);
- Threat
- R1(H),XS(d)
- Vars
- S(d);N_GUARD,SBLOCK,XS(E)::QAB1(B)
- S(d);N_GUARD::B(F)
- S(d);N_GUARD::B(F),XS(d)
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).