MESON Chess Problem Database
Problem Display
PID: 96491 (4R1n1/1Q6/3qNr2/b1P1k1P1/6P1/2npB3/4N3/K3R2B w - - 0 1)
Korenev, Valery Ivanovich
Subota, Nikolai
1st Prize, Best Problems, 2003-2004
#2
11 + 7
| 6490 | yacpdb | 2009 |
| 23 | Die Schwalbe | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qc7
- 2.Bd4#
- 1...Qb8
- 2.Bd4#
- 1...Qf8
- 2.Bd4#
- 1...Qd4
- 2.Bxd4#
- 1...Qa6
- 2.Bd4#
- 1...Qb6
- 2.Bd4#
- 1...Qc6
- 2.Bd4#
- 1...Qxe6
- 2.Bd4#
- 1...Rf4
- 2.Bxf4#
- 1...Rxe6
- 2.Bf4#
- 1...Rg6
- 2.Bf4#
- 1...Rh6
- 2.Bf4#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sxe2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Bd4#
- 1...Qc7
- Tries
- 1.Sc1?
- threat
- 2.Bd4#
- 2.Bf4#
- 1...Qxc5
- 2.Bf4#
- 1...Qxe6
- 2.Sxd3#
- 1...Qd4
- 2.Bxd4#
- 2.Bf4#
- 1...Rf4
- 2.Bd4#
- 2.Bxf4#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Rxe6!
- threat
- 1.Sg1?
- threat
- 2.Bd4#
- 2.Bf4#
- 1...Qxc5
- 2.Bf4#
- 1...Rxe6
- 2.Sf3#
- 1...Qd4
- 2.Bxd4#
- 2.Bf4#
- 1...Rf4
- 2.Bd4#
- 2.Bxf4#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Qxe6!
- threat
- 1.Sxc3?
- threat
- 2.Bc1#
- 2.Bg1#
- 2.Bd2#
- 2.Bf2#
- 2.Bd4#
- 2.Bf4#
- 2.Qe4#
- 1...Qxc5
- 2.Bf4#
- 2.Bxc5#
- 1...Qxe6
- 2.Qe4#
- 2.Qd5#
- 1...Rxe6
- 2.Qe4#
- 1...Qd4
- 2.Bxd4#
- 2.Bf4#
- 1...Qd5
- 2.Bd4#
- 2.Bf4#
- 2.Qxd5#
- 1...Qc6
- 2.Bd4#
- 2.Bf4#
- 1...Rf1
- 2.Bd4#
- 2.Bf4#
- 2.Qe4#
- 1...Rf2
- 2.Bxf2#
- 2.Bd4#
- 2.Bf4#
- 2.Qe4#
- 1...Rf3
- 2.Bd4#
- 2.Bf4#
- 2.Qe4#
- 1...Rf4
- 2.Bd4#
- 2.Bxf4#
- 1...d2
- 2.Bxd2#
- 2.Bd4#
- 2.Bf4#
- 2.Qe4#
- 1...Bxc3+!
- threat
- 1.S2f4?
- threat
- 2.Bd4#
- 1...Qxe6
- 2.Sxd3#
- 1...Rxe6
- 2.Sg6#
- 1...Qd4
- 2.Bxd4#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Qxc5!
- threat
- 1.S6f4+?
- 1...Qe7
- 2.Bd4#
- 1...Qe6
- 2.Sxd3#
- 2.Bd4#
- 1...Re6
- 2.Sg6#
- 1...Se7!
- 1...Qe7
- 1.Sc7+?
- 1...Qe7
- 2.Bd4#
- 1...Qe6
- 2.Bd4#
- 1...Re6
- 2.Bf4#
- 1...Se7!
- 1...Qe7
- 1.Sg7+?
- 1...Qe7
- 2.Bd4#
- 1...Qe6
- 2.Bd4#
- 1...Re6
- 2.Bf4#
- 1...Se7!
- 1...Qe7
- 1.Sd8+?
- 1...Qe7
- 2.Bd4#
- 1...Qe6
- 2.Sc6#
- 2.Bd4#
- 1...Re6
- 2.Sf7#
- 2.Bf4#
- 1...Se7!
- 1...Qe7
- 1.Sf8+?
- 1...Qe7
- 2.Bd4#
- 1...Qe6
- 2.Sd7#
- 2.Bd4#
- 1...Re6
- 2.Sg6#
- 2.Bf4#
- 1...Se7!
- 1...Qe7
- 1.Qd5+?
- 1...Sxd5
- 2.Bd4#
- 1...Qxd5!
- 1...Sxd5
- 1.Sc1?
- Keys
- 1.S2d4!
- threat
- 2.Bf4#
- 1...Qxe6
- 2.Sc6#
- 1...Rxe6
- 2.Sf3#
- 1...Rf4
- 2.Bxf4#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- threat
- 1.S2d4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 15
- Sets
- Q(e);N_GUARD::B(E)
- Q(e);N_GUARD::B(E),XQ(e)
- Q(e);N_GUARD,P_SPINQ(e),XS(I)::B(E)
- R(f);N_GUARD::B(E),XR(f)
- R(f);N_GUARD,P_SPINR(f),XS(I)::B(E)
- R(f);N_GUARD::B(E)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD,XS(D)::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- S(a);S_CUTQ(e)::B(E)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(G)::R(B)+B(E),DCHECK
- Q(e);N_GUARD,P_SPINQ(e),XS(I)::S(D),XP(b)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- Refutation
- R(f);P_SPINR(f),XS(I)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(G)::R(B)+B(E),DCHECK
- R(f);N_GUARD,P_SPINR(f),XS(I)::S(D)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- Refutation
- Q(e);P_SPINQ(e),XS(I)
- Try
- S(D);XS(a)
- Threat
- DUALS(7)
- Vars
- R(f);P_SPINR(f),XS(I)::QAR1(J)
- Refutation
- B(c);CHECK,XS(D)
- Try
- S(D);
- Threat
- R(B)+B(E),DCHECK
- Vars
- Q(e);N_GUARD,P_SPINQ(e),XS(I)::S(D),XP(b)
- R(f);N_GUARD,P_SPINR(f),XS(I)::S(D)
- Q(e);::R(B)+B(E),DCHECK,XQ(e)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
- Refutation
- Q(e);XP(G)
- Try
- S(I);CHECK
- Vars
- Q(e);P_SPINQ(e)::B(E)
- R(f);P_SPINR(f)::S(I)
- Refutation
- S(g);P_SPINS(g)
- Try
- S(I);CHECK
- Vars
- Q(e);P_SPINQ(e)::B(E)
- R(f);P_SPINR(f)::B(E)
- Refutation
- S(g);P_SPINS(g)
- Try
- S(I);CHECK
- Vars
- Q(e);P_SPINQ(e)::B(E)
- R(f);P_SPINR(f)::B(E)
- Refutation
- S(g);P_SPINS(g)
- Try
- S(I);CHECK
- Vars
- Q(e);P_SPINQ(e)::B(E)
- Refutation
- S(g);P_SPINS(g)
- Try
- S(I);CHECK
- Vars
- Q(e);P_SPINQ(e)::B(E)
- Refutation
- S(g);P_SPINS(g)
- Try
- Q(J);CHECK
- Vars
- S(a);XQ(J)::B(E)
- Refutation
- Q(e);XQ(J)
- Try
- Actual
- S(D);
- Threat
- R(B)+B(E),DCHECK
- Vars
- Q(e);N_GUARD,P_SPINQ(e),XS(I)::S(D)
- R(f);N_GUARD,P_SPINR(f),XS(I)::S(D)
- R(f);::R(B)+B(E),DCHECK,XR(f)
- S(a);N_GUARD::QAR1(J)
- S(a);N_GUARD::QAR1(J),XS(a)
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).