MESON Chess Problem Database
Problem Display
PID: 152922 (1BK5/P2p4/3P4/2Q1pP1N/Rn1nk1P1/8/2r1pP2/1B1bN3 w - - 0 1)
Alekseev, Yuri Mikhailovich
Shakhmatnaya kompozitsiya, 2004
#2
12 + 8
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.a8Q#
- 2.a8B#
- 1...Sd3
- 2.a8Q#
- 2.a8B#
- 1...Sa6
- 2.a8Q#
- 2.a8B#
- 1...Sb3
- 2.f3#
- 2.a8Q#
- 2.a8B#
- 1...Sf3
- 2.a8Q#
- 2.a8B#
- 1...Sb5
- 2.f3#
- 2.a8Q#
- 2.a8B#
- 1...Sxf5
- 2.f3#
- 2.a8Q#
- 2.a8B#
- 1...Sc6
- 2.f3#
- 1...Se6
- 2.f3#
- 2.a8Q#
- 2.a8B#
- 1...Sa2
- Tries
- 1.Kxd7?
- 1...Sxf5
- 2.f3#
- 2.a8Q#
- 2.a8B#
- 1...Sa2
- 2.Qc6#
- 2.a8Q#
- 2.a8B#
- 1...Sd3
- 2.a8Q#
- 2.a8B#
- 1...Sa6
- 2.Qc6#
- 2.a8Q#
- 2.a8B#
- 1...Sbc6
- 2.Qxc6#
- 1...Sb3
- 2.f3#
- 2.a8Q#
- 2.a8B#
- 1...Sf3
- 2.a8Q#
- 2.a8B#
- 1...Sb5
- 2.f3#
- 2.a8Q#
- 2.a8B#
- 1...Sdc6
- 2.f3#
- 1...Se6
- 2.f3#
- 2.a8Q#
- 2.a8B#
- 1...Sd5!
- 1...Sxf5
- 1.Bxc2+?
- 1...Sbxc2
- 2.a8Q#
- 2.a8B#
- 1...Sd3
- 2.Bxd3#
- 2.a8Q#
- 2.a8B#
- 1...Sdxc2
- 2.f3#
- 2.a8Q#
- 2.a8B#
- 1...Bxc2!
- 1...Sbxc2
- 1.f3+?
- 1...Sxf3
- 2.a8Q#
- 2.a8B#
- 1...Ke3!
- 1...Sxf3
- 1.a8Q+?
- 1...Sd5
- 2.Qxd5#
- 1...Sdc6
- 2.Rxb4#
- 2.Qc4#
- 2.f3#
- 1...Sbc6!
- 1...Sd5
- 1.a8B+?
- 1...Sd5
- 2.Bxd5#
- 1...Sdc6
- 2.Rxb4#
- 2.Qc4#
- 2.f3#
- 1...Sbc6!
- 1...Sd5
- 1.Kxd7?
- Keys
- 1.Qc3!
- 1...Kd5
- 2.Sf6#
- 1...Sxf5
- 2.a8Q#
- 2.a8B#
- 1...Sd5
- 2.f3#
- 1...Sa2
- 2.a8Q#
- 2.a8B#
- 1...Sd3
- 2.a8Q#
- 2.a8B#
- 1...Sa6
- 2.a8Q#
- 2.a8B#
- 1...Sbc6
- 2.Qf3#
- 1...Sb3
- 2.a8Q#
- 2.a8B#
- 1...Sf3
- 2.a8Q#
- 2.a8B#
- 1...Sb5
- 2.a8Q#
- 2.a8B#
- 1...Sdc6
- 2.Qd3#
- 1...Se6
- 2.a8Q#
- 2.a8B#
- 1...Kd5
- 1.Qc3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD,P_SPINS(e)::P=Q
- S(d);N_GUARD,N_SPINR(b),P_SPINS(e)::P=Q
- S(e);N_GUARD,P_SPINS(d)::P=Q
- S(e);N_GUARD,N_PINQ(F),P_SPINS(d)::P(C)
- Tries
- Try
- K(L);N_SPINQ(F),S_FLIGHT,XP(h)
- Vars
- S(d);N_GUARD,N_SPINR(b),P_SPINS(e)::P=Q
- S(d);N_GUARD,P_SPINS(e)::QAB(F),XS(d)
- S(e);N_GUARD,P_SPINS(d)::P=Q
- S(e);N_GUARD,P_SPINS(d)::P(C)
- Refutation
- S(d);P_SPINS(e)
- Try
- B(A);CHECK,N_SPINQ(F),XR(b)
- Vars
- S(d);P_SPINS(e),XB(A)::P=Q
- Refutation
- B(a);XB(A)
- Try
- P(C);CHECK
- Vars
- S(e);P_SPINS(d),XP(C)::P=Q
- Refutation
- K(f);N_SPINR(b),P-FLIGHT,P_SPINS(e)
- Try
- P(J);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(e)::QAB1(J),XS(d)
- Refutation
- S(d);N_PINQ(F),P_SPINS(e)
- Try
- P(J);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(e)::B(J),XS(d)
- Refutation
- S(d);N_PINQ(F),P_SPINS(e)
- Try
- Actual
- Q(F);
- Vars
- K(f);N_SPINR(b),S_FLIGHT::S(H)
- S(e);N_GUARD,P_SPINS(d),XP(G)::P=Q
- S(d);P_SPINS(e),SBLOCK::P(C)
- S(d);N_GUARD,P_SPINS(e)::P=Q
- S(d);N_GUARD,N_SPINR(b),P_SPINS(e)::P=Q
- S(d);N_PINQ(F),P_SPINS(e)::QAB1(F)
- S(e);N_GUARD,P_SPINS(d)::P=Q
- S(e);N_PINQ(F),P_SPINS(d)::QAB1(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).