MESON Chess Problem Database
Problem Display
PID: 96235 (1bnQR3/4p1B1/r7/5RPN/pr1pk2p/1b5B/1nP2P2/K1N5 w - - 0 1)
Aleksandrov, Vladimir Aleksandrovich
Best Problems, 2004
#2
11 + 11
| 6490 | yacpdb | 2009 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Qd5#
- 1...Rb5
- 2.Qxd4#
- 1...Rbb6
- 2.Qxd4#
- 1...Rb7
- 2.Qxd4#
- 1...Ra5
- 2.Sf6#
- 1...Rf6
- 2.Sxf6#
- 1...Ra7
- 2.Sf6#
- 1...Ra8
- 2.Sf6#
- 1...Bxc2
- 2.Qd5#
- 1...Bc4
- 2.Qxd4#
- 1...Bd5
- 2.Qxd5#
- 1...Bf4
- 2.Rxf4#
- 1...Bd6
- 2.Sf6#
- 1...Ba7
- 2.Rf4#
- 1...Sd3
- 2.cxd3#
- 1...Sc4
- 2.Qxd4#
- 2.Qd5#
- 1...Sb6
- 2.Sf6#
- 1...Sd6
- 2.Sf6#
- 1...e5
- 2.Rf4#
- 1...e6
- 2.Sf6#
- 1...Rc4
- Tries
- 1.Sxb3?
- threat
- 2.Sd2#
- 2.Sc5#
- 2.Qd5#
- 1...Rxb3
- 2.Qxd4#
- 2.Qd5#
- 1...Bf4
- 2.Rxf4#
- 2.Qd5#
- 1...Rc4
- 2.Sd2#
- 2.Qd5#
- 1...Rb5
- 2.Sd2#
- 2.Qxd4#
- 1...Ra5
- 2.Sd2#
- 2.Sf6#
- 1...Rc6
- 2.Sd2#
- 2.Qd5#
- 1...Rd6
- 2.Sd2#
- 2.Sc5#
- 1...Be5
- 2.Sd2#
- 2.Sc5#
- 1...Bd6
- 2.Sd2#
- 2.Sf6#
- 1...Ba7
- 2.Sd2#
- 2.Rf4#
- 2.Qd5#
- 1...Sd3
- 2.Sd2#
- 2.Qd5#
- 1...Sc4
- 2.Sc5#
- 2.Qxd4#
- 2.Qd5#
- 1...Sb6
- 2.Sd2#
- 2.Sc5#
- 2.Sf6#
- 1...Sd6
- 2.Sd2#
- 2.Sc5#
- 2.Sf6#
- 2.Rxe7#
- 2.Qxe7#
- 1...e5
- 2.Sd2#
- 2.Sc5#
- 2.Rf4#
- 1...axb3+!
- threat
- 1.Rxe7+?
- 1...Re6
- 2.Sf6#
- 1...Be6
- 2.Sf6#
- 2.Qd5#
- 1...Be5
- 2.Rf4#
- 2.Rexe5#
- 1...Sxe7!
- 1...Re6
- 1.Qxe7+?
- 1...Re6
- 2.Sf6#
- 1...Be6
- 2.Sf6#
- 1...Be5
- 2.Qxe5#
- 1...Sxe7!
- 1...Re6
- 1.Qd6?
- threat
- 2.Sf6#
- 2.Rf4#
- 1...Bxd6
- 2.Sf6#
- 1...Sxd6
- 2.Sf6#
- 1...Be6
- 2.Rf4#
- 1...Sd3
- 2.Sf6#
- 2.cxd3#
- 1...Rxd6!
- threat
- 1.c4?
- threat
- 2.Qxd4#
- 2.Qd5#
- 1...Rxc4
- 2.Qd5#
- 1...Bxc4
- 2.Qxd4#
- 1...Bf4
- 2.Rxf4#
- 2.Qd5#
- 1...Rb5
- 2.Qxd4#
- 1...Ra5
- 2.Sf6#
- 2.Qxd4#
- 1...Rd6
- 2.Rf4#
- 1...Rf6
- 2.Sxf6#
- 2.Qd5#
- 1...Be5
- 2.Qd5#
- 1...Bd6
- 2.Sf6#
- 1...Ba7
- 2.Rf4#
- 2.Qd5#
- 1...Sb6
- 2.Sf6#
- 2.Qxd4#
- 1...Sd6
- 2.Sf6#
- 2.Rf4#
- 2.Rxe7#
- 2.Qxe7#
- 1...d3
- 2.Qd4#
- 2.Qd5#
- 1...e5
- 2.Rf4#
- 2.Qd5#
- 1...dxc4 ep!
- threat
- 1.Sxb3?
- Keys
- 1.Qa5!
- threat
- 2.Bg2#
- 1...Rxa5
- 2.Sf6#
- 1...Rb5
- 2.Qe1#
- 1...Bd5
- 2.Qxd5#
- 1...Be5
- 2.Qxe5#
- 1...e5
- 2.Rf4#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 15
- Sets
- R(d);S_CUTB(b)::QAB1(J)
- R(d);N_GUARD::QAR1(J),XP(e)
- R(h);N_GUARD::S(H)
- R(h);N_GUARD::S(H),XR(h)
- B(b);N_GUARD,XP(C)::QAB1(J)
- B(b);S_CUTR(d)::QAR1(J),XP(e)
- B(b);N_GUARD::QAB1(J),XB(b)
- B(j);N_GUARD::R1(F),XB(j)
- B(j);S_CUTR(h)::S(H)
- B(j);N_GUARD::R1(F)
- S(a);OGATE::P(C),XS(a)
- S(k);S_CUTR(h)::S(H)
- P(i);S_CUTB(j)::R1(F)
- P(i);S_CUTR(h)::S(H)
- Tries
- Try
- S(B);XB(b)
- Threat
- DUALS(3)
- Refutation
- P(c);CHECK,XS(B)
- Try
- R(K);CHECK,XP(i)
- Vars
- R(h);P_SPINR(h)::S(H)
- Refutation
- S(k);XR(K)
- Try
- Q(J);CHECK,XP(i)
- Vars
- R(h);P_SPINR(h)::S(H)
- B(b);P_SPINB(b)::S(H)
- B(j);N_GUARD,P_SPINB(j)::QAR1(J),XB(j)
- Refutation
- S(k);P_SPINS(k),XQ(J)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- B(j);XQ(J)::S(H)
- S(k);XQ(J)::S(H)
- B(b);N_SPINP(i)::R1(F)
- Refutation
- R(h);XQ(J)
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- R(d);XP(C)::QAB1(J)
- B(b);XP(C)::QAR1(J),XP(e)
- R(d);::QAR1(J),XP(e)
- R(h);S_CUTB(j)::R1(F)
- B(j);N_SPINP(i)::QAB1(J)
- B(j);S_CUTR(h)::S(H)
- Refutation
- P(e);EP,XP(C)
- Try
- Actual
- Q(J);
- Threat
- B(E)
- Vars
- R(h);N_GUARD,XQ(J)::S(H)
- R(d);OGATE::QAR(J)
- B(b);N_GUARD::QAB1(J),XB(b)
- B(j);N_GUARD,N_SPINP(i)::QAR1(J),XB(j)
- P(i);S_CUTB(j)::R1(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).