MESON Chess Problem Database
Problem Display
PID: 261135 (1K6/Bb6/r7/pR6/BPkN1N1Q/P3R3/8/1qr2n2 w - - 0 1)
Rudenko, Valentin Fedorovich
1st Prize, Neue Zurcher Zeitung, 1984
#2
10 + 7
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Bb3#
- 1...Qf5
- 2.Bb3#
- 1...Qg6
- 2.Bb3#
- 1...Qh7
- 2.Bb3#
- 1...Qa1
- 2.Bb3#
- 1...Qb3
- 2.Bxb3#
- 1...Qe4
- Tries
- 1.Sc2?
- threat
- 2.Sd5#
- 2.Rc5#
- 1...Qxb4
- 2.Sd5#
- 1...Rxc2
- 2.Sd5#
- 1...Sxe3
- 2.Rc5#
- 1...Qa1
- 2.Rc5#
- 1...Qb2
- 2.Rc5#
- 1...Rd1
- 2.Rc5#
- 1...Rc6
- 2.Se2#
- 2.Sg2#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Se6#
- 2.Sg6#
- 1...Re6
- 2.Rc5#
- 1...Rf6
- 2.Rc5#
- 1...Rg6
- 2.Rc5#
- 1...Rh6
- 2.Rc5#
- 1...Bh1
- 2.Sg2#
- 2.Rc5#
- 1...Bg2
- 2.Sxg2#
- 2.Rc5#
- 1...Bf3
- 2.Rc5#
- 1...Be4
- 2.Rc5#
- 1...Bd5
- 2.Sxd5#
- 2.Rc5#
- 1...Bc8
- 2.Se6#
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sh2
- 2.Rc5#
- 1...Sg3
- 2.Rc5#
- 1...Qxc2!
- threat
- 1.Sde2?
- threat
- 2.Rc5#
- 1...Qxb4
- 2.Sd5#
- 1...Rc6
- 2.Sd3#
- 1...Qf5!
- threat
- 1.Sb3?
- threat
- 2.Rc5#
- 1...Qxb3
- 2.Sd5#
- 1...Rc6
- 2.Sxa5#
- 1...Qf5!
- threat
- 1.Sfe2?
- threat
- 2.Rc5#
- 1...Qxb4
- 2.Sc6#
- 1...Qf5
- 2.Bb3#
- 1...Rc6
- 2.Sc2#
- 1...Sxe3!
- threat
- 1.Sd5?
- threat
- 2.Sc2#
- 2.Rc5#
- 1...Qxb4
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sf3#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 1...Bxd5
- 2.Rc5#
- 1...Qf5
- 2.Sxf5#
- 2.Bb3#
- 2.Rc5#
- 1...Qc2
- 2.Sxc2#
- 2.Rc5#
- 1...Qd3
- 2.Rc5#
- 1...Qe4
- 2.Bb3#
- 1...Qg6
- 2.Bb3#
- 2.Rc5#
- 1...Qh7
- 2.Bb3#
- 2.Rc5#
- 1...Qa1
- 2.Bb3#
- 2.Rc5#
- 1...Qb2
- 2.Rc5#
- 1...Rd1
- 2.Rc3#
- 2.Rc5#
- 1...Rc2
- 2.Sxc2#
- 2.Se2#
- 2.Sb3#
- 2.Sf3#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 2.Rc5#
- 1...Rc6
- 2.Sc2#
- 1...Re6
- 2.Rc5#
- 1...Rf6
- 2.Rc5#
- 1...Rg6
- 2.Rc5#
- 1...Rh6
- 2.Rc5#
- 1...Bc8
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sh2
- 2.Rc5#
- 1...Sg3
- 2.Rc5#
- 1...Sxe3!
- threat
- 1.Sfe6?
- threat
- 2.Rc5#
- 1...Qxb4
- 2.Sc6#
- 1...Qf5
- 2.Bb3#
- 1...Rc6
- 2.Sc2#
- 1...Sxe3!
- threat
- 1.Sg6?
- threat
- 2.Se5#
- 2.Rc5#
- 1...Qxg6
- 2.Bb3#
- 2.Rc5#
- 1...Qxb4
- 2.Sc6#
- 2.Se5#
- 1...Rxg6
- 2.Rc5#
- 1...Qd3
- 2.Rc5#
- 1...Qf5
- 2.Bb3#
- 1...Qe4
- 2.Bb3#
- 1...Rc6
- 2.Sc2#
- 2.Se5#
- 1...Re6
- 2.Rc5#
- 1...Be4
- 2.Se5#
- 1...Sxe3!
- threat
- 1.Qg5?
- threat
- 2.Qc5#
- 1...Qf5
- 2.Bb3#
- 1...Rc6
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- 1...Qxb4!
- threat
- 1.Sc2?
- Keys
- 1.Qh5!
- threat
- 2.Qc5#
- 1...Qxb4
- 2.Qe2#
- 1...Qf5
- 2.Bb3#
- 1...Rc6
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- threat
- 1.Qh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(a);N_GUARD::B(C)
- Q(a);N_GUARD::B(C),XQ(a)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(a);XP(D)::QAR(G)+S(F)
- R(b);XS(E)::QAR(G)+S(F)
- S(c);XR(B)::R1(H)
- Q(a);::R1(H)
- R(b);::R1(H)
- R(f);::R1(H)
- B(g);::R1(H)
- S(c);::R1(H)
- Refutation
- Q(a);XS(E)
- Try
- S(E);
- Threat
- R1(H)
- Vars
- Q(a);N_GUARD,XP(D)::QAR(G)+S(F)
- R(f);S_CUTB(g)::QAR(G)+S(F)
- Refutation
- Q(a);
- Try
- S(E);
- Threat
- R1(H)
- Vars
- Q(a);N_GUARD,XS(E)::QAR(G)+S(F)
- R(f);N_GUARD::S(E),XP(e)
- Refutation
- Q(a);
- Try
- S(F);
- Threat
- R1(H)
- Vars
- Q(a);N_GUARD,XP(D)::QAR(G)+S(E)
- Q(a);N_GUARD::B(C)
- R(f);S_CUTB(g)::QAR(G)+S(E)
- Refutation
- S(c);XR(B)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(g);XS(F)::R1(H)
- Q(a);::R1(H)
- Q(a);N_GUARD::B(C)
- R(f);::QAR(G)+S(E)
- R(f);::R1(H)
- B(g);::R1(H)
- S(c);::R1(H)
- Refutation
- S(c);XR(B)
- Try
- S(F);
- Threat
- R1(H)
- Vars
- Q(a);N_GUARD,XP(D)::QAR(G)+S(E)
- Q(a);N_GUARD::B(C)
- R(f);S_CUTB(g)::QAR(G)+S(E)
- Refutation
- S(c);XR(B)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(f);XS(F)::R1(H)
- Q(a);::R1(H)
- Q(a);N_GUARD::B(C)
- R(f);::R1(H)
- B(g);::S(F)
- Refutation
- S(c);XR(B)
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- Q(a);N_GUARD::B(C)
- R(f);S_CUTB(g)::QAB1(G)
- B(g);N_GUARD::QAB1(G),XB(g)
- Refutation
- Q(a);XP(D)
- Try
- Actual
- Q(G);
- Threat
- QAR1(G)
- Vars
- Q(a);N_GUARD,XP(D)::QAB(G)
- Q(a);N_GUARD::B(C)
- R(f);S_CUTB(g)::QAB1(G)
- B(g);N_GUARD::QAB1(G),XB(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).