MESON Chess Problem Database
Problem Display
PID: 17555 (2b2q2/K1P1p3/p3rn2/2QB3R/3r1kp1/3pb1RP/5P1P/8 w - - 0 1)
Kopnin, Aleksey Grigorevich
1st Prize, Shakhmaty v SSSR, 1947
#2
9 + 11
| 14752 | Soviet Chess Compositions (1945-1947) | 1949 |
| 3105 | FIDE Album (1945-1955) | 1964 |
| 23 | Die Schwalbe | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb6
- 2.fxe3#
- 1...Rc6
- 2.fxe3#
- 1...Rd6
- 2.fxe3#
- 1...Se4
- 2.fxe3#
- 1...Sd7
- 2.Rxg4#
- 1...Sh7
- 2.Rxg4#
- 1...Se8
- 2.Rxg4#
- 1...Sg8
- 2.Rxg4#
- 1...Rb6
- Tries
- 1.Bh1?
- threat
- 2.Rf5#
- 2.Qf5#
- 2.Qg5#
- 1...Sxh5
- 2.Rxg4#
- 1...Qh6
- 2.Rf5#
- 2.Qf5#
- 1...Qg7
- 2.Rf5#
- 2.Qf5#
- 1...Qg8
- 2.Rf5#
- 2.Qf5#
- 1...Ra4
- 2.Rf5#
- 1...Rb4
- 2.Rf5#
- 1...Rc4
- 2.Rf5#
- 1...Rde4
- 2.Rf5#
- 1...Rdd6
- 2.Rf5#
- 1...Rd7
- 2.Rf5#
- 1...Rd8
- 2.Rf5#
- 1...Ree4
- 2.Qg5#
- 1...Re5
- 2.Qxe5#
- 1...Rb6
- 2.Qe5#
- 2.Qg5#
- 2.fxe3#
- 1...Rc6
- 2.Qe5#
- 2.Qg5#
- 2.fxe3#
- 1...Red6
- 2.Qe5#
- 2.Qg5#
- 2.fxe3#
- 1...Se4
- 2.Rxg4#
- 2.fxe3#
- 1...Sd5
- 2.Rxg4#
- 1...Sd7
- 2.Rxg4#
- 2.Qg5#
- 1...Sh7
- 2.Rxg4#
- 1...Se8
- 2.Rxg4#
- 2.Qg5#
- 1...Sg8
- 2.Rxg4#
- 2.Qg5#
- 1...Rd5!
- threat
- 1.Bg2?
- threat
- 2.Rf5#
- 2.Qf5#
- 2.Qg5#
- 1...Sxh5
- 2.Rxg4#
- 1...Qh6
- 2.Rf5#
- 2.Qf5#
- 1...Qg7
- 2.Rf5#
- 2.Qf5#
- 1...Qg8
- 2.Rf5#
- 2.Qf5#
- 1...Ra4
- 2.Rf5#
- 1...Rb4
- 2.Rf5#
- 1...Rc4
- 2.Rf5#
- 1...Rde4
- 2.Rf5#
- 1...Rdd6
- 2.Rf5#
- 1...Rd7
- 2.Rf5#
- 1...Rd8
- 2.Rf5#
- 1...Ree4
- 2.Qg5#
- 1...Re5
- 2.Qxe5#
- 1...Rb6
- 2.Qe5#
- 2.Qg5#
- 2.fxe3#
- 1...Rc6
- 2.Qe5#
- 2.Qg5#
- 2.fxe3#
- 1...Red6
- 2.Qe5#
- 2.Qg5#
- 2.fxe3#
- 1...Se4
- 2.Rxg4#
- 2.fxe3#
- 1...Sd5
- 2.Rxg4#
- 1...Sd7
- 2.Rxg4#
- 2.Qg5#
- 1...Sh7
- 2.Rxg4#
- 1...Se8
- 2.Rxg4#
- 2.Qg5#
- 1...Sg8
- 2.Rxg4#
- 2.Qg5#
- 1...Rd5!
- threat
- 1.Qxd4+?
- 1...Re4
- 2.fxe3#
- 1...Se4
- 2.Qxe3#
- 2.fxe3#
- 1...Bxd4+!
- 1...Re4
- 1.Qd6+?
- 1...Re5
- 2.Qxe5#
- 2.fxe3#
- 1...Rxd6
- 2.fxe3#
- 1...exd6!
- 1...Re5
- 1.Bh1?
- Keys
- 1.Be4!
- threat
- 2.Qf5#
- 1...Kxe4
- 2.Qf5#
- 1...Rdxe4
- 2.Rf5#
- 1...Rexe4
- 2.Qg5#
- 1...Sxe4
- 2.fxe3#
- 1...Sxh5
- 2.Rxg4#
- 1...Rd5
- 2.Qxe3#
- 1...Ra4
- 2.Qxe3#
- 1...Rb4
- 2.Qxe3#
- 1...Rc4
- 2.Qxe3#
- 1...Rdd6
- 2.Qxe3#
- 1...Rd7
- 2.Qxe3#
- 1...Rd8
- 2.Qxe3#
- 1...Re5
- 2.Qxe5#
- 1...Rb6
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 1...Red6
- 2.Qe5#
- 1...Sd5
- 2.Rxg4#
- 1...Sd7
- 2.Rxg4#
- 1...Sh7
- 2.Rxg4#
- 1...Se8
- 2.Rxg4#
- 1...Sg8
- 2.Rxg4#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 13
- REMOVED MATES = 0
- Sets
- R(g);N_GUARD::P(A),XB(b)
- S(h);S_CUTR(g)::P(A),XB(b)
- S(h);N_GUARD::R1(C),XP(e)
- Tries
- Try
- B(F);
- Threat
- DUALS(3)
- Vars
- S(h);N_GUARD,XR(G)::R1(C),XP(e)
- R(c);P_PINQ(E)::R1(G)
- R(c);P_PINP(I),P_PINQ(E)::R1(G)
- R(g);::QAB1(E)
- R(g);N_GUARD::QAB1(E),XR(g)
- S(h);N_GUARD::R1(C),XP(e)
- Refutation
- R(c);P_PINQ(E)
- Try
- B(F);
- Threat
- DUALS(3)
- Vars
- S(h);N_GUARD,XR(G)::R1(C),XP(e)
- R(c);P_PINQ(E)::R1(G)
- R(c);P_PINP(I),P_PINQ(E)::R1(G)
- R(g);::QAB1(E)
- R(g);N_GUARD::QAB1(E),XR(g)
- S(h);N_GUARD::R1(C),XP(e)
- Refutation
- R(c);P_PINQ(E)
- Try
- Q(E);CHECK,P_SPINQ(E),XR(c)
- Vars
- R(g);P_SPINR(g)::P(A),XB(b)
- Refutation
- B(b);CHECK,XQ(E)
- Try
- Q(E);CHECK
- Vars
- R(g);XQ(E)::P(A),XB(b)
- Refutation
- P(i);XQ(E)
- Try
- Actual
- B(F);
- Threat
- QAR1(E)
- Vars
- K(d);P-FLIGHT,XB(F)::QAB1(E)
- R(c);P_PINQ(E),SBLOCK,XB(F)::R1(G)
- R(g);SBLOCK,XB(F)::QAB1(E)
- S(h);SBLOCK,XB(F)::P(A),XB(b)
- S(h);N_GUARD,XR(G)::R1(C),XP(e)
- R(c);OGATE,P_PINQ(E)::QAB1(E),XB(b)
- R(c);OGATE,P_PINP(I),P_PINQ(E)::QAB1(E),XB(b)
- R(g);N_GUARD::QAB1(E),XR(g)
- R(g);N_GUARD::QAB1(E)
- S(h);N_GUARD::R1(C),XP(e)
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).