MESON Chess Problem Database
Problem Display
PID: 46837 (2nr2bB/6Qn/2PPk1pr/6Pp/7N/4N1R1/3p2B1/3K4 w - - 0 1)
Kopnin, Aleksey Grigorevich
2nd Prize, Sovietskaya Latvia, 1961
#2
10 + 9
| 3749 | FIDE Album (1959-1961) | 1966 |
SOLUTION
- SOUND
- Sets
- 1...Kxd6
- 2.Qe5#
- 1...Rxd6
- 2.Bh3#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sxg5
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sxd6
- 2.Bd5#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Kxd6
- Tries
- 1.Kxd2?
- 1...Kxd6
- 2.Qe5#
- 1...Sxg5
- 2.Qf6#
- 1...Sxd6
- 2.Bd5#
- 1...Sf6
- 2.Qxf6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Rxd6+!
- 1...Kxd6
- 1.Sf1?
- 1...Kxd6
- 2.Qe5#
- 1...Rxd6
- 2.Re3#
- 1...Sxg5
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Sxd6!
- 1...Kxd6
- 1.Sc4?
- threat
- 2.Re3#
- 1...Sxg5
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- 1...Sxd6!
- threat
- 1.Sd5?
- 1...Rxd6
- 2.Sf4#
- 2.Sc7#
- 2.Re3#
- 2.Qxg8#
- 1...Sxg5
- 2.Qf6#
- 1...Sxd6
- 2.Sf4#
- 2.Sc7#
- 2.Qe7#
- 1...Sf6
- 2.Qxf6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Kxd6!
- 1...Rxd6
- 1.Sef5?
- threat
- 2.Re3#
- 1...Sxg5
- 2.Qf6#
- 1...Sxd6
- 2.Sd4#
- 2.Qe7#
- 1...Sf6
- 2.Qxf6#
- 1...gxf5!
- threat
- 1.Shf5?
- threat
- 2.Bd5#
- 1...Rxd6
- 2.Qxg8#
- 1...Sf6
- 2.Qxf6#
- 1...Sb6
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...gxf5!
- threat
- 1.Bh1?
- 1...Kxd6
- 2.Qe5#
- 1...Sxg5
- 2.Qf6#
- 1...Sxd6
- 2.Bd5#
- 1...Sf6
- 2.Qxf6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Rxd6!
- 1...Kxd6
- 1.Bf3?
- 1...Kxd6
- 2.Qe5#
- 1...Sxg5
- 2.Qf6#
- 1...Sxd6
- 2.Bd5#
- 1...Sf6
- 2.Qxf6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Rxd6!
- 1...Kxd6
- 1.Be4?
- 1...Kxd6
- 2.Qe5#
- 1...Sxg5
- 2.Qf6#
- 1...Sxd6
- 2.Bd5#
- 1...Sf6
- 2.Qxf6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Rxd6!
- 1...Kxd6
- 1.Rf3?
- threat
- 2.Qe5#
- 1...Sf6
- 2.Qxf6#
- 1...Kxd6!
- threat
- 1.Rh3?
- 1...Kxd6
- 2.Qe5#
- 1...Sxg5
- 2.Qf6#
- 1...Sxd6
- 2.Bd5#
- 1...Sf6
- 2.Qxf6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Rxd6!
- 1...Kxd6
- 1.Rg4?
- 1...Kxd6
- 2.Qe5#
- 1...Rxd6
- 2.Re4#
- 1...Sxg5
- 2.Qf6#
- 1...Sxd6
- 2.Bd5#
- 1...Sf6
- 2.Qxf6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...hxg4!
- 1...Kxd6
- 1.Qc7?
- threat
- 2.Bh3#
- 2.Bd5#
- 1...Rxd6
- 2.Bh3#
- 1...Sxg5
- 2.Bd5#
- 1...Sxd6
- 2.Bd5#
- 1...Rd7
- 2.Bd5#
- 2.Qxd7#
- 1...Se7
- 2.Qxe7#
- 1...Rf8
- 2.Bd5#
- 2.Qd7#
- 1...Sb6
- 2.Bh3#
- 2.Qe7#
- 1...Sf6!
- threat
- 1.gxh6?
- 1...Kxd6
- 2.Qe5#
- 1...Rxd6
- 2.Bh3#
- 1...Sxd6
- 2.Bd5#
- 1...Sf6
- 2.Qxf6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sg5
- 2.Qf6#
- 2.Qxg6#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...g5!
- 1...Kxd6
- 1.Kxd2?
- Keys
- 1.Sc2!
- 1...Kxd6
- 2.Qe5#
- 1...Rxd6
- 2.Re3#
- 1...Sxg5
- 2.Qf6#
- 1...Sxd6
- 2.Sd4#
- 1...Sf6
- 2.Qxf6#
- 1...Rd7
- 2.Qxd7#
- 1...Re8
- 2.Qd7#
- 1...Rf8
- 2.Qd7#
- 1...Bf7
- 2.Qe5#
- 1...Sf8
- 2.Qf6#
- 1...Sb6
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Kxd6
- 1.Sc2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(c);P-FLIGHT,XP(H)::QAB1(I)
- R(h);SBLOCK,XP(H)::B(B)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(f);N_GUARD::QAR1(I),XS(f)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);SBLOCK,XP(H)::B(B)
- S(g);N_GUARD::QAR1(I),XS(g)
- Tries
- Try
- K(A);P-FLIGHT,P_SPINP(H),XP(a)
- Vars
- K(c);P-FLIGHT,XP(H)::QAB1(I)
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(g);SBLOCK,XP(H)::B(B)
- S(f);N_GUARD::QAR1(I),XS(f)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD,N_PINP(H)::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- R(h);CHECK,XP(H)
- Try
- S(C);
- Vars
- K(c);P-FLIGHT,XP(H)::QAB1(I)
- R(h);SBLOCK,XP(H)::R(D)
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(f);N_GUARD::QAR1(I),XS(f)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- S(g);XP(H)
- Try
- S(C);
- Threat
- R(D)
- Vars
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(f);N_GUARD::QAR1(I),XS(f)
- Refutation
- S(g);XP(H)
- Try
- S(C);
- Vars
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(f);N_GUARD::QAR1(I),XS(f)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- K(c);P-FLIGHT,XP(H)
- Try
- S(C);
- Threat
- R(D)
- Vars
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(f);N_GUARD::QAR1(I),XS(f)
- Refutation
- P(d);XS(C)
- Try
- S(E);
- Threat
- B(B)
- Vars
- R(h);N_GUARD,XP(H)::QAB(I),XB(i)
- S(f);N_GUARD::QAR1(I),XS(f)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- P(d);XS(E)
- Try
- B(B);
- Vars
- K(c);P-FLIGHT,XP(H)::QAB1(I)
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(g);SBLOCK,XP(H)::B(B)
- S(f);N_GUARD::QAR1(I),XS(f)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- R(h);XP(H)
- Try
- B(B);
- Vars
- K(c);P-FLIGHT,XP(H)::QAB1(I)
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(g);SBLOCK,XP(H)::B(B)
- S(f);N_GUARD::QAR1(I),XS(f)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- R(h);XP(H)
- Try
- B(B);
- Vars
- K(c);P-FLIGHT,XP(H)::QAB1(I)
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(g);SBLOCK,XP(H)::B(B)
- S(f);N_GUARD::QAR1(I),XS(f)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- R(h);XP(H)
- Try
- R(D);
- Threat
- QAR1(I)
- Vars
- S(f);N_GUARD::QAR1(I),XS(f)
- Refutation
- K(c);P-FLIGHT,XP(H)
- Try
- R(D);
- Vars
- K(c);P-FLIGHT,XP(H)::QAB1(I)
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(g);SBLOCK,XP(H)::B(B)
- S(f);N_GUARD::QAR1(I),XS(f)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- R(h);XP(H)
- Try
- R(D);
- Vars
- K(c);P-FLIGHT,XP(H)::QAB1(I)
- R(h);SBLOCK,XP(H)::R(D)
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(g);SBLOCK,XP(H)::B(B)
- S(f);N_GUARD::QAR1(I),XS(f)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- P(b);XR(D)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(h);XP(H)::B(B)
- S(f);XP(F)::B(B)
- S(g);XP(H)::B(B)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- S(f);
- Try
- P(F);XR(e)
- Vars
- K(c);P-FLIGHT,XP(H)::QAB1(I)
- R(h);SBLOCK,XP(H)::B(B)
- S(g);SBLOCK,XP(H)::B(B)
- S(f);N_GUARD::QAR1(I),XS(f)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(g)
- Refutation
- P(d);
- Try
- Actual
- S(C);
- Vars
- K(c);P-FLIGHT,XP(H)::QAB1(I)
- R(h);SBLOCK,XP(H)::R(D)
- S(f);N_GUARD,XP(F)::QAR1(I)
- S(g);SBLOCK,XP(H)::S(C)
- S(f);N_GUARD::QAR1(I),XS(f)
- R(h);N_GUARD::QAB1(I),XR(h)
- R(h);N_GUARD::QAB1(I)
- B(i);SBLOCK::QAR1(I)
- S(f);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I)
- S(g);N_GUARD::QAR1(I),XS(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).