MESON Chess Problem Database
Problem Display
PID: 95041 (5r2/2p1N3/4Q2p/8/1n3k1K/B1r3p1/2bP2P1/8 w - - 0 1)
Shamrin, Aleksandr Petrovich
Cherkasskaya Pravda, 1980
#2
6 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd3
- 2.Sg6#
- 1...Re3
- 2.Qxe3#
- 2.dxe3#
- 1...Rc4
- 2.Qe3#
- 1...Rc5
- 2.Qe3#
- 1...Rc6
- 2.Qe3#
- 1...Rf5
- 2.Sg6#
- 1...Bd1
- 2.Sg6#
- 1...Bb3
- 2.Sg6#
- 1...Bd3
- 2.Qe3#
- 1...Ba4
- 2.Sg6#
- 1...Bg6
- 2.Sxg6#
- 1...Sa2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 2.Sg6#
- 2.Qe3#
- 1...Sd5
- 2.Sxd5#
- 1...Sa6
- 2.Sd5#
- 1...Sc6
- 2.Sd5#
- 1...Rd3
- Tries
- 1.Bc1?
- threat
- 2.dxc3#
- 2.d3#
- 1...Ra3
- 2.d3#
- 1...Rb3
- 2.d3#
- 1...Rd3
- 2.Sg6#
- 1...Re3
- 2.Qxe3#
- 2.dxe3#
- 1...Rc4
- 2.Qe3#
- 2.d3#
- 2.d4#
- 1...Rc5
- 2.Qe3#
- 2.d3#
- 2.d4#
- 1...Rc6
- 2.Qe3#
- 2.d3#
- 2.d4#
- 1...Rd8
- 2.d3#
- 1...Bb1
- 2.dxc3#
- 1...Bd1
- 2.Sg6#
- 2.dxc3#
- 1...Bb3
- 2.Sg6#
- 2.dxc3#
- 1...Bd3
- 2.Qe3#
- 2.dxc3#
- 1...Ba4
- 2.Sg6#
- 2.dxc3#
- 1...Be4
- 2.dxc3#
- 1...Bf5
- 2.dxc3#
- 1...Bg6
- 2.Sxg6#
- 2.dxc3#
- 1...Bh7
- 2.dxc3#
- 1...Sa2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 2.Sg6#
- 2.Qe3#
- 1...Sd5
- 2.Sxd5#
- 1...Rf3!
- threat
- 1.dxc3?
- threat
- 2.Bc1#
- 1...Sa2
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 2.Sg6#
- 1...Sd5
- 2.Sxd5#
- 1...Rd8!
- threat
- 1.d3?
- threat
- 2.Sg6#
- 2.Bc1#
- 2.Qe4#
- 1...Rxa3
- 2.Sg6#
- 2.Qe4#
- 1...Rxd3
- 2.Sg6#
- 1...Sxd3
- 2.Sd5#
- 2.Sg6#
- 1...Rc4
- 2.Sg6#
- 2.Bc1#
- 1...Rf6
- 2.Bc1#
- 2.Qe4#
- 1...Rg8
- 2.Bc1#
- 2.Qe4#
- 1...Bb1
- 2.Sg6#
- 2.Qe4#
- 1...Bd1
- 2.Sg6#
- 2.Qe4#
- 1...Bb3
- 2.Sg6#
- 2.Qe4#
- 1...Ba4
- 2.Sg6#
- 2.Qe4#
- 1...Sa2
- 2.Sd5#
- 2.Sg6#
- 2.Qe4#
- 1...Sd5
- 2.Sxd5#
- 2.Sg6#
- 2.Qe4#
- 1...Bxd3!
- threat
- 1.Bc1?
- Keys
- 1.d4!
- threat
- 2.Qe5#
- 1...Be4
- 2.Qxh6#
- 1...Re3
- 2.Qg4#
- 1...Rc5
- 2.Bc1#
- 1...Rf5
- 2.Sg6#
- 1...Sd3
- 2.Sd5#
- 2.Sg6#
- 1...Sc6
- 2.Sd5#
- threat
- 1.d4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- R(b);S_CUTB(a)::S(F)
- R(b);N_GUARD::QAB1(E)
- R(h);S_CUTB(a)::S(F)
- B(a);N_GUARD::S(F)
- B(a);S_CUTR(b)::QAB1(E)
- B(a);N_GUARD::S(F),XB(a)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(b);::B(C)+P(A)
- R(b);S_CUTB(a)::S(F)
- R(h);::B(C)+P(A)
- B(a);::B(C)+P(A),XR(b)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- Refutation
- R(b);
- Try
- P(A);XR(b)
- Threat
- B(C)
- Vars
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- Refutation
- R(h);
- Try
- P(A);
- Threat
- DUALS(3)
- Vars
- R(b);XP(A)::S(F)
- Refutation
- B(a);XP(A)
- Try
- Actual
- P(A);
- Threat
- QAB1(E)
- Vars
- B(a);SBLOCK::QAB(E),XP(f)
- R(b);SBLOCK::QAR1(E)
- R(b);N_GUARD::B(C)
- R(h);S_CUTB(a)::S(F)
- S(d);N_GUARD::S(F)
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).