MESON Chess Problem Database
Problem Display
PID: 171265 (6r1/3RBp2/Q2Pk2n/3pNp1B/2r2p2/2pK1N2/4R3/8 w - - 0 1)
Archakov, Vladimir Mikhailovich
Melnichenko, Viktor Oleksandrovich
Tidskrift for Schack, 1982
#2
9 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rd4+
- 2.Sxd4#
- 1...Rc5
- 2.Sd4#
- 1...Rc6
- 2.Sd4#
- 1...Rc7
- 2.Sd4#
- 2.dxc7#
- 1...Rcc8
- 2.Sd4#
- 1...Rg5
- 2.Sxg5#
- 1...Ra8
- 2.Sg5#
- 1...Rb8
- 2.Sg5#
- 1...Rgc8
- 2.Sg5#
- 1...Rd8
- 2.Sg5#
- 1...Re8
- 2.Sg5#
- 1...Rf8
- 2.Sg5#
- 1...Rh8
- 2.Sg5#
- 1...Sg4
- 2.Bxf7#
- 1...d4
- 2.Qxc4#
- 1...Rd4+
- Tries
- 1.Sg4+?
- 1...Kxd7
- 2.Sf6#
- 1...Re4!
- 1...Kxd7
- 1.Rc7?
- threat
- 2.Sxc4#
- 1...Rd4+
- 2.Sxd4#
- 1...Rxc7
- 2.Sd4#
- 1...d4
- 2.Qxc4#
- 1...Ra4
- 2.Sc4#
- 1...Rb4
- 2.Sc4#
- 1...Rc5
- 2.Sd4#
- 2.Sc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 1...Rc6
- 2.Sd4#
- 2.Sc4#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 1...Rg2
- 2.Qc8#
- 1...Sg4
- 2.Bxf7#
- 1...Re4!
- threat
- 1.Rd8?
- threat
- 2.Sxc4#
- 1...Rd4+
- 2.Sxd4#
- 1...Rxd8
- 2.Sg5#
- 1...d4
- 2.Qxc4#
- 1...Re4
- 2.Qc8#
- 1...Ra4
- 2.Sc4#
- 2.Qc8#
- 1...Rb4
- 2.Sc4#
- 2.Qc8#
- 1...Rc5
- 2.Sd4#
- 2.Sc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 1...Rc6
- 2.Sd4#
- 2.Sc4#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 1...Rc7
- 2.Sd4#
- 2.Sc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 1...Rc8
- 2.Sd4#
- 2.Sc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sxf7#
- 2.Qxc8#
- 1...Sg4
- 2.Bxf7#
- 1...Rg2!
- threat
- 1.Sg4+?
- Keys
- 1.Qc8!
- threat
- 2.Sxc4#
- 1...Rd4+
- 2.Sxd4#
- 1...Rcxc8
- 2.Sd4#
- 1...Rgxc8
- 2.Sg5#
- 1...d4
- 2.Qxc4#
- 1...Re4
- 2.Rd8#
- 1...Ra4
- 2.Sc4#
- 2.Rd8#
- 1...Rb4
- 2.Sc4#
- 2.Rd8#
- 1...Rc5
- 2.Sd4#
- 2.Sc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxf7#
- 1...Rc6
- 2.Sd4#
- 2.Sc4#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sxf7#
- 1...Rc7
- 2.Sd4#
- 2.Sc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxf7#
- 1...Rg2
- 2.Rc7#
- 1...Sg4
- 2.Bxf7#
- threat
- 1.Qc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- R(b);CHECK,N_GUARD::S(C),XR(b)
- R(b);N_GUARD::S(C)
- R(i);N_GUARD::S(C),XR(i)
- R(i);N_GUARD::S(C)
- S(g);N_GUARD::B(E),XP(h)
- P(d);OGATEB::QAB(F),XR(b)
- Tries
- Try
- S(D);CHECK
- Vars
- K(f);S_FLIGHT,XR(H)::S(D)
- Refutation
- R(b);P_SPINR(b)
- Try
- R(H);
- Threat
- R(A)+S(D),XR(b)
- Vars
- R(b);CHECK,N_GUARD::S(C),XR(b)
- R(b);N_GUARD,XR(H)::S(C)
- P(d);OGATEB::QAB(F),XR(b)
- R(b);::R(A)+S(D)
- R(i);N_GUARD::QAB(F)
- S(g);N_GUARD::B(E),XP(h)
- Refutation
- R(b);
- Try
- R(H);
- Threat
- R(A)+S(D),XR(b)
- Vars
- R(b);CHECK,N_GUARD::S(C),XR(b)
- R(i);N_GUARD,XR(H)::S(C)
- P(d);OGATEB::QAB(F),XR(b)
- R(b);N_GUARD::QAB(F)
- S(g);N_GUARD::B(E),XP(h)
- Refutation
- R(i);
- Try
- Actual
- Q(F);
- Threat
- R(A)+S(D),XR(b)
- Vars
- R(b);CHECK,N_GUARD::S(C),XR(b)
- R(b);N_GUARD,XQ(F)::S(C)
- R(i);N_GUARD,XQ(F)::S(C)
- P(d);OGATEB::QAB(F),XR(b)
- R(b);N_GUARD::QAB(F)+R(H)
- R(i);N_GUARD::QAB(F)+R(H)
- S(g);N_GUARD::B(E),XP(h)
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).