MESON Chess Problem Database
Problem Display
PID: 86417 (8/1b2b1Q1/7r/4NN2/2PPk1BR/r2p4/1Pp5/2B1nK2 w - - 0 1)
Rudenko, Valentin Fedorovich
Shedey, Sergey Oleksandrovich
The Problemist, 1979
#2
10 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rf6
- 2.Bh3#
- 1...Bd6
- 2.Qxb7#
- 1...Bf6
- 2.Qxb7#
- 1...Rf6
- Tries
- 1.Sf3?
- threat
- 2.Sg3#
- 2.Qe5#
- 1...Bxh4
- 2.Qe5#
- 1...Sxf3
- 2.Sg3#
- 1...Ra5
- 2.Sg3#
- 1...Re6
- 2.Sg3#
- 1...Rf6
- 2.Sg5#
- 2.Sg3#
- 1...Bd6
- 2.Sg5#
- 2.Qxb7#
- 1...Bf6
- 2.Sg3#
- 2.Sd6#
- 2.Qxb7#
- 1...d2!
- threat
- 1.Sg6?
- threat
- 2.Sg3#
- 2.Qe5#
- 2.Qxe7#
- 1...Rxg6
- 2.Sg3#
- 2.Qe5#
- 1...Bxh4
- 2.Sd6#
- 2.Qe5#
- 2.Qxb7#
- 1...Ra5
- 2.Sg3#
- 1...Ra6
- 2.Sg3#
- 2.Qe5#
- 1...Rh7
- 2.Sg3#
- 2.Qe5#
- 1...Bd5
- 2.Sg3#
- 2.Qe5#
- 1...Bc8
- 2.Sg3#
- 2.Qe5#
- 1...Bb4
- 2.Sg3#
- 2.Qe5#
- 2.Qxb7#
- 1...Bc5
- 2.Sg3#
- 2.Qe5#
- 2.Qxb7#
- 1...Bg5
- 2.Sg3#
- 2.Sd6#
- 2.Qe5#
- 2.Qxb7#
- 1...Bd6
- 2.Sxd6#
- 2.Qxb7#
- 1...Bf6
- 2.Qxb7#
- 1...Bd8
- 2.Sg3#
- 2.Sd6#
- 2.Qe5#
- 2.Qxb7#
- 1...Bf8
- 2.Sg3#
- 2.Qe5#
- 2.Qxb7#
- 1...Sf3
- 2.Sg3#
- 1...d2!
- threat
- 1.Sf7?
- threat
- 2.Sg3#
- 2.Qe5#
- 1...Bxh4
- 2.Qe5#
- 1...Rf6
- 2.Sg5#
- 1...Ra5
- 2.Sg3#
- 1...Re6
- 2.Sg3#
- 1...Bd6
- 2.Sg5#
- 1...Bf6
- 2.S7d6#
- 1...Sf3
- 2.Sg3#
- 1...d2!
- threat
- 1.Bh3+?
- 1...Bxh4
- 2.Qg4#
- 1...Rxh4!
- 1...Bxh4
- 1.Bh5+?
- 1...Bxh4
- 2.Qg4#
- 1...Kxf5!
- 1...Bxh4
- 1.Qg5?
- threat
- 2.Bf3#
- 2.Bh5#
- 2.Qe3#
- 2.Qf4#
- 1...Rxh4
- 2.Qe3#
- 2.Qf4#
- 1...Rh5
- 2.Bf3#
- 2.Bxh5#
- 2.Qe3#
- 2.Qf4#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 2.Qe3#
- 2.Qf4#
- 1...d2
- 2.Bf3#
- 2.Bh5#
- 1...Bxg5!
- threat
- 1.Sf3?
- Keys
- 1.Sxd3!
- threat
- 2.Sf2#
- 1...Kxd3
- 2.Be2#
- 1...Rxd3
- 2.Qe5#
- 1...Bxh4
- 2.Sc5#
- 1...Sxd3
- 2.Sg3#
- threat
- 1.Sxd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- R(f);N_GUARD,P_PINS(I),S_CUTB(h)::R(G)+B(F)
- B(h);OGATE::QAB(J),XB(g)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- B(h);XR(G)::QAR1(J)
- S(a);XS(H)::S(I)
- R(c);::S(I)
- R(f);::S(I)
- Refutation
- P(d);
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- R(c);::S(I)
- B(h);OGATE::QAB(J),XB(g)
- S(a);::S(I)
- Refutation
- P(d);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- B(h);XR(G)::QAR1(J)
- R(f);P_PINS(I),S_CUTB(h)::S(H)
- R(c);::S(I)
- R(f);::S(I)
- B(h);N_GUARD::S(H)
- B(h);N_GUARD,S_CUTR(f)::S(H)
- S(a);::S(I)
- Refutation
- P(d);
- Try
- B(F);CHECK
- Vars
- B(h);XR(G)::QAR2(J)
- Refutation
- R(f);XR(G)
- Try
- B(F);CHECK
- Vars
- B(h);XR(G)::QAR2(J)
- Refutation
- K(e);S_FLIGHT,XS(I)
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- S(a);::R(G)+B(F),DCHECK
- Refutation
- B(h);XQ(J)
- Try
- Actual
- S(H);XP(d)
- Threat
- S(H)
- Vars
- K(e);S_FLIGHT,XS(H)::B(F)
- R(c);SBLOCK,XS(H)::QAR1(J)
- B(h);N_GUARD,XR(G)::S(H)
- S(a);SBLOCK,XS(H)::S(I)
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).