MESON Chess Problem Database
Problem Display
PID: 50766 (7n/p3Rr2/2pK2bB/3NN3/2Qbk3/r4R1B/1p6/q1n5 w - - 0 1)
Pilchenko, Viacheslav Karlovich
1st Prize, Na Smenu!, 1990
#2
8 + 11
| 4827 | FIDE Album (1989-1991) | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Sc3#
- 2.Re3#
- 1...Rc3
- 2.Sxc3#
- 1...Re3
- 2.Rxe3#
- 1...Raxf3
- 2.Sxf7#
- 1...Ra4
- 2.Sc3#
- 2.Re3#
- 1...Ra5
- 2.Sc3#
- 2.Re3#
- 1...Ra6
- 2.Sc3#
- 2.Re3#
- 1...Rfxf3
- 2.Sd3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rf4
- 2.Rxf4#
- 1...Rf6+
- 2.Sxf6#
- 1...Rxe7
- 2.Sf6#
- 2.Rf4#
- 1...Rg7
- 2.Sf6#
- 2.Rf4#
- 1...Rh7
- 2.Sf6#
- 2.Rf4#
- 1...Bf5
- 2.Rf4#
- 1...Sb3
- 2.Sc3#
- 2.Re3#
- 2.Qd3#
- 2.Qc2#
- 1...Sd3
- 2.Re3#
- 1...cxd5
- 2.Qxd5#
- 1...Ra2
- Tries
- 1.Sd3+?
- 1...Rxe7
- 2.Re3#
- 2.Rf4#
- 1...Kxf3!
- 1...Rxe7
- 1.Sg4+?
- 1...Rxe7
- 2.Rf4#
- 1...Kxf3!
- 1...Rxe7
- 1.Sxc6+?
- 1...Rxe7
- 2.Rf4#
- 1...Kxf3!
- 1...Rxe7
- 1.Sxg6+?
- 1...Rxe7
- 2.Rf4#
- 1...Kxf3!
- 1...Rxe7
- 1.Sd7+?
- 1...Rxe7
- 2.Rf4#
- 1...Kxf3!
- 1...Rxe7
- 1.Bg4?
- threat
- 2.Sxf7#
- 1...Rf6+
- 2.Sxf6#
- 1...Rfxf3
- 2.Sd3#
- 2.Sxf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rxe7
- 2.Sf6#
- 2.Rf4#
- 1...Rf4
- 2.Sd3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 2.Rxf4#
- 1...Rg7
- 2.Sf6#
- 2.Sf7#
- 2.Rf4#
- 1...Rh7
- 2.Sf6#
- 2.Sf7#
- 2.Rf4#
- 1...Rf8
- 2.Sd3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Bf5
- 2.Rf4#
- 1...Sd3
- 2.Re3#
- 1...Rf5!
- threat
- 1.Bf5+?
- 1...Bxf5
- 2.Rf4#
- 1...Rxf5!
- 1...Bxf5
- 1.Rxa3?
- threat
- 2.Sc3#
- 2.Sxf7#
- 2.Re3#
- 1...Rf6+
- 2.Sxf6#
- 1...Rxe7
- 2.Sc3#
- 2.Sf6#
- 2.Re3#
- 1...cxd5
- 2.Sxf7#
- 2.Re3#
- 2.Qxd5#
- 1...b1Q
- 2.Sxf7#
- 2.Re3#
- 1...b1S
- 2.Sxf7#
- 2.Re3#
- 1...b1B
- 2.Sxf7#
- 2.Re3#
- 1...b1R
- 2.Sxf7#
- 2.Re3#
- 1...Rf1
- 2.Sc3#
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 2.Re3#
- 1...Rf2
- 2.Sc3#
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 2.Re3#
- 1...Rf3
- 2.Sd3#
- 2.Sxf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rf4
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 2.Re3#
- 1...Rf5
- 2.Sc3#
- 2.Re3#
- 1...Rg7
- 2.Sc3#
- 2.Sf6#
- 2.Sf7#
- 2.Re3#
- 1...Rh7
- 2.Sc3#
- 2.Sf6#
- 2.Sf7#
- 2.Re3#
- 1...Rf8
- 2.Sc3#
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 2.Re3#
- 1...Bf5
- 2.Sc3#
- 2.Bg2#
- 2.Re3#
- 1...Sa2
- 2.Sxf7#
- 2.Re3#
- 2.Qd3#
- 2.Qc2#
- 1...Se2
- 2.Sxf7#
- 2.Re3#
- 2.Qd3#
- 2.Qc2#
- 1...Sb3
- 2.Sc3#
- 2.Qd3#
- 2.Qc2#
- 1...Sd3
- 2.Sc3#
- 2.Qxd3#
- 1...Qxa3+!
- threat
- 1.Rb3?
- threat
- 2.Sc3#
- 2.Sxf7#
- 1...Rf6+
- 2.Sxf6#
- 1...Rxe7
- 2.Sc3#
- 2.Sf6#
- 1...Sxb3
- 2.Sc3#
- 2.Qd3#
- 2.Qc2#
- 1...cxd5
- 2.Sxf7#
- 2.Qxd5#
- 1...b1Q
- 2.Sxf7#
- 1...b1S
- 2.Sxf7#
- 1...b1B
- 2.Sxf7#
- 1...b1R
- 2.Sxf7#
- 1...Rf1
- 2.Sc3#
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rf2
- 2.Sc3#
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rf3
- 2.Sd3#
- 2.Sxf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rf4
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rf5
- 2.Sc3#
- 1...Rg7
- 2.Sc3#
- 2.Sf6#
- 2.Sf7#
- 1...Rh7
- 2.Sc3#
- 2.Sf6#
- 2.Sf7#
- 1...Rf8
- 2.Sc3#
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Bf5
- 2.Sc3#
- 2.Bg2#
- 1...Sa2
- 2.Sxf7#
- 2.Qd3#
- 2.Qc2#
- 1...Se2
- 2.Sxf7#
- 2.Qd3#
- 2.Qc2#
- 1...Sd3
- 2.Sc3#
- 2.Qxd3#
- 1...Rxb3!
- threat
- 1.Rc3?
- threat
- 2.Sxf7#
- 1...Rf6+
- 2.Sxf6#
- 1...Rxc3
- 2.Sxc3#
- 1...Rxe7
- 2.Sf6#
- 1...Rf1
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rf2
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rf3
- 2.Sd3#
- 2.Sxf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rf4
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rg7
- 2.Sf6#
- 2.Sf7#
- 1...Rh7
- 2.Sf6#
- 2.Sf7#
- 1...Rf8
- 2.Sf3#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Bf5
- 2.Bg2#
- 1...Sd3
- 2.Qxd3#
- 1...Rf5!
- threat
- 1.Rfxf7?
- threat
- 2.Sf6#
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Rf4#
- 1...Rxh3
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Rf4#
- 1...Bxf7
- 2.Sf6#
- 1...cxd5
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Qxd5#
- 1...Rd3
- 2.Sf6#
- 2.Sxd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Rf4#
- 1...Rf3
- 2.Sd3#
- 2.Sxf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 1...Bf5
- 2.Sf6#
- 2.Bxf5#
- 1...Bh5
- 2.Sf6#
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sd7#
- 2.Bf5#
- 2.Rf4#
- 1...Bh7
- 2.Sf6#
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sd7#
- 2.Rf4#
- 1...Se2
- 2.Sf6#
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 1...Sd3
- 2.Sf6#
- 2.Sxd3#
- 2.Bg2#
- 1...c5
- 2.Sf6#
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Rf4#
- 1...Sxf7+!
- threat
- 1.Sd3+?
- Keys
- 1.Rf6!
- threat
- 2.Sxf7#
- 1...Rxf6+
- 2.Sxf6#
- 1...Rxe7
- 2.Rf4#
- 1...Rg7
- 2.Sf7#
- 2.Rf4#
- 1...Rh7
- 2.Sf7#
- 2.Rf4#
- 1...Rf8
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sxc6#
- 2.Sxg6#
- 2.Sd7#
- 2.Sf7#
- 1...Bf5
- 2.Bxf5#
- 1...Sd3
- 2.Bg2#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- R(d);N_GUARD::S(D),XR(d)
- R(d);N_GUARD::R1(A),XR(d)
- R(d);SBLOCK,XR(A)::R(H)+S(E),XR(j)
- R(j);N_GUARD::R1(A),XR(j)
- R(j);CHECK,N_GUARD::S(D),XR(j)
- B(h);S_CUTR(j)::R1(A)
- S(b);S_CUTR(d)::R1(A)
- P(g);OGATE,XS(D)::QAB1(C),XP(g)
- Tries
- Try
- S(E);CHECK
- Refutation
- K(f);N_SPINB(e),S_FLIGHT,XR(A)
- Try
- S(E);CHECK
- Vars
- R(j);XR(H)::R1(A)
- Refutation
- K(f);N_SPINB(e),S_FLIGHT,XR(A)
- Try
- S(E);CHECK,XP(g)
- Vars
- R(j);XR(H)::R1(A)
- Refutation
- K(f);N_SPINB(e),S_FLIGHT,XR(A)
- Try
- S(E);CHECK,XB(h)
- Vars
- R(j);XR(H)::R1(A)
- Refutation
- K(f);N_SPINB(e),S_FLIGHT,XR(A)
- Try
- S(E);CHECK
- Vars
- R(j);XR(H)::R1(A)
- Refutation
- K(f);N_SPINB(e),S_FLIGHT,XR(A)
- Try
- B(B);
- Threat
- R(H)+S(E),XR(j)
- Vars
- R(j);CHECK,N_GUARD::S(D),XR(j)
- B(h);S_CUTR(j)::R1(A)
- S(b);S_CUTR(d)::R1(A)
- Refutation
- R(j);
- Try
- B(B);CHECK
- Vars
- B(h);XB(B)::R1(A)
- Refutation
- R(j);XB(B)
- Try
- R(A);XR(d)
- Threat
- DUALS(3)
- Vars
- R(j);CHECK,N_GUARD::S(D),XR(j)
- Refutation
- Q(a);CHECK,XR(A)
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- R(j);CHECK,N_GUARD::S(D),XR(j)
- P(c);::R(H)+S(E),XR(j)
- R(j);::S(D)
- Refutation
- R(d);XR(A)
- Try
- R(A);
- Threat
- R(H)+S(E),XR(j)
- Vars
- R(j);CHECK,N_GUARD::S(D),XR(j)
- R(d);XR(A)::S(D),XR(d)
- R(j);N_GUARD,XR(H)::S(D)
- B(h);SBLOCK,S_CUTR(j)::B(B)
- S(b);N_GUARD::QAB1(C),XS(b)
- Refutation
- R(j);
- Try
- R(A);XR(j)
- Threat
- DUALS(8)
- Vars
- B(h);XR(A)::S(D)
- Refutation
- S(k);CHECK,XR(A)
- Try
- Actual
- R(A);
- Threat
- R(H)+S(E),XR(j)
- Vars
- R(j);CHECK,XR(A)::S(D),XR(j)
- R(j);N_GUARD,XR(H)::R1(A)
- B(h);N_GUARD::B(B),XB(h)
- S(b);S_CUTR(d)::B(B)
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).