MESON Chess Problem Database
Problem Display
PID: 95066 (2R4B/3P4/3N2P1/4Rp2/pK1k2r1/Q7/P1P2r2/3n1b1q w - - 0 1)
Vlcek, Peter
Pravda, 1999
#2
10 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Ra5#
- 2.Rb5#
- 2.Rec5#
- 2.Rxf5#
- 1...Qf3
- 2.Ra5#
- 2.Rb5#
- 2.Rec5#
- 2.Rxf5#
- 1...Qd5
- 2.Re4#
- 1...Qc6
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rxf5#
- 1...Qb7+
- 2.Rb5#
- 1...Qa8
- 2.Ra5#
- 2.Rb5#
- 2.Rec5#
- 2.Rxf5#
- 1...Qg1
- 2.Ra5#
- 2.Rb5#
- 2.Rec5#
- 2.Rxf5#
- 1...Rxc2
- 2.Sxf5#
- 1...Rd2
- 2.Sxf5#
- 1...Re2
- 2.Sb5#
- 2.Sxf5#
- 2.Rc4#
- 2.Qd3#
- 1...Rfg2
- 2.Sxf5#
- 1...Rh2
- 2.Sxf5#
- 1...Bg2
- 2.Sb5#
- 2.Rc4#
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bh3
- 2.Sb5#
- 2.Ra5#
- 2.Rb5#
- 2.Rec5#
- 2.Rxf5#
- 2.Rc4#
- 2.Qd3#
- 1...Bc4
- 2.Rxc4#
- 1...Bb5
- 2.Sxb5#
- 1...Sb2
- 2.Qxb2#
- 2.Qc3#
- 2.Qe3#
- 1...Sc3
- 2.Qxc3#
- 1...Se3
- 2.Qb2#
- 2.Qc3#
- 2.Qxe3#
- 1...f4
- 2.Sf5#
- 2.Rh5#
- 1...Qg2
- Tries
- 1.Re2+?
- 1...Qxh8
- 2.Qd3#
- 1...Kd5+!
- 1...Qxh8
- 1.Rcc5?
- threat
- 2.Re4#
- 2.Red5#
- 1...Qxh8
- 2.Rcd5#
- 2.Red5#
- 1...Qe4
- 2.Rxe4#
- 2.Red5#
- 1...Qd5
- 2.Rcxd5#
- 2.Re4#
- 2.Rexd5#
- 1...Re4
- 2.Rcd5#
- 2.Rxe4#
- 2.Red5#
- 1...Bd3
- 2.Re4#
- 2.Qxd3#
- 1...Sc3
- 2.Re4#
- 2.Qxc3#
- 1...Qb7+!
- threat
- 1.Qb2+?
- 1...Sc3
- 2.Qxc3#
- 1...Sxb2!
- 1...Sc3
- 1.Qb3?
- threat
- 2.Re4#
- 2.Rd5#
- 1...Qb7+
- 2.Rb5#
- 1...Qxh8
- 2.Rd5#
- 2.Qd5#
- 1...Qe4
- 2.Rxe4#
- 2.Rd5#
- 1...Qd5
- 2.Re4#
- 2.Rxd5#
- 2.Qxd5#
- 1...Re4
- 2.Rxe4#
- 2.Rd5#
- 1...Bd3
- 2.Re4#
- 2.Qxd3#
- 1...Bc4
- 2.Rxc4#
- 2.Qxc4#
- 1...Sc3
- 2.Re4#
- 2.Qxc3#
- 1...axb3!
- threat
- 1.c3+?
- 1...Sxc3
- 2.Qxc3#
- 1...Kd3+!
- 1...Sxc3
- 1.c4?
- threat
- 2.Sb5#
- 2.Re4#
- 2.Rd5#
- 1...Qb7+
- 2.Rb5#
- 1...Qxh8
- 2.Rd5#
- 1...Bxc4
- 2.Rxc4#
- 1...Sc3
- 2.Qxc3#
- 1...Qe4
- 2.Sb5#
- 2.Rxe4#
- 2.Rd5#
- 1...Qd5
- 2.Re4#
- 2.Rxd5#
- 1...Qc6
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Rxf5#
- 2.Re6#
- 2.Re7#
- 2.Ree8#
- 1...Re4
- 2.Sb5#
- 2.Rxe4#
- 2.Rd5#
- 1...Bd3
- 2.Sb5#
- 2.Re4#
- 1...Rb2+!
- threat
- 1.d8Q?
- threat
- 2.Se4#
- 2.Sb5#
- 2.Sxf5#
- 2.Qb6#
- 1...Qb7+
- 2.Sb5#
- 2.Sxb7#
- 1...Rxc2
- 2.Se4#
- 2.Sb5#
- 2.Sxf5#
- 1...Rxg6
- 2.Sb5#
- 2.Sxf5#
- 2.Qb6#
- 1...Qe4
- 2.Sxe4#
- 2.Sb5#
- 2.Sxf5#
- 2.Qb6#
- 1...Qd5
- 2.Re4#
- 1...Qc6
- 2.Sb5#
- 2.Sxf5#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rxf5#
- 1...Qa8
- 2.Sb5#
- 2.Sxf5#
- 2.Sb7#
- 2.Ra5#
- 2.Rb5#
- 2.Rec5#
- 2.Rxf5#
- 2.Qb6#
- 1...Qh4
- 2.Sb5#
- 2.Sxf5#
- 2.Qb6#
- 1...Qh7
- 2.Sb5#
- 2.Sxf5#
- 2.Sf7#
- 2.Qb6#
- 1...Re4
- 2.Sc4#
- 2.Sxe4#
- 2.Sb5#
- 2.Sxf5#
- 2.Sb7#
- 2.Sf7#
- 2.Se8#
- 2.Qb6#
- 1...Bd3
- 2.Sb5#
- 2.Sxf5#
- 2.Qb6#
- 2.Qxd3#
- 1...Bc4
- 2.Sb5#
- 2.Sxf5#
- 2.Rxc4#
- 2.Qb6#
- 1...Bb5
- 2.Sxb5#
- 2.Sxf5#
- 2.Qb6#
- 1...Sc3
- 2.Sb5#
- 2.Sxf5#
- 2.Qb6#
- 2.Qxc3#
- 1...Se3
- 2.Sb5#
- 2.Sxf5#
- 2.Qb2#
- 2.Qb6#
- 2.Qc3#
- 2.Qxe3#
- 1...f4
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Rh5#
- 2.Qb6#
- 1...Qxh8!
- threat
- 1.d8R?
- threat
- 2.Se4#
- 2.Sb5#
- 2.Sxf5#
- 1...Qb7+
- 2.Sb5#
- 2.Sxb7#
- 1...Rxg6
- 2.Sb5#
- 2.Sxf5#
- 1...Qe4
- 2.Sxe4#
- 2.Sb5#
- 2.Sxf5#
- 1...Qd5
- 2.Re4#
- 1...Qc6
- 2.Sb5#
- 2.Sxf5#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rxf5#
- 1...Qa8
- 2.Sb5#
- 2.Sxf5#
- 2.Sb7#
- 2.Ra5#
- 2.Rb5#
- 2.Rec5#
- 2.Rxf5#
- 1...Qh4
- 2.Sb5#
- 2.Sxf5#
- 1...Qh7
- 2.Sb5#
- 2.Sxf5#
- 2.Sf7#
- 1...Re4
- 2.Sc4#
- 2.Sxe4#
- 2.Sb5#
- 2.Sxf5#
- 2.Sb7#
- 2.Sf7#
- 2.Se8#
- 1...Bd3
- 2.Sb5#
- 2.Sxf5#
- 2.Qxd3#
- 1...Bc4
- 2.Sb5#
- 2.Sxf5#
- 2.Rxc4#
- 1...Bb5
- 2.Sxb5#
- 2.Sxf5#
- 1...Sc3
- 2.Sb5#
- 2.Sxf5#
- 2.Qxc3#
- 1...Se3
- 2.Sb5#
- 2.Sxf5#
- 2.Qb2#
- 2.Qc3#
- 2.Qxe3#
- 1...f4
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Rh5#
- 1...Qxh8!
- threat
- 1.Re2+?
- Keys
- 1.Kxa4!
- threat
- 2.Qc5#
- 1...Qc6+
- 2.Rb5#
- 1...Qa8+
- 2.Ra5#
- 1...Bb5+
- 2.Sxb5#
- 1...Sb2+
- 2.Qxb2#
- 1...Sc3+
- 2.Qxc3#
- 1...Rxc2
- 2.Sxf5#
- 1...Qd5
- 2.Re4#
- 1...Bc4
- 2.Rxc4#
- threat
- 1.Kxa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(c);SBLOCK::B(J)+R(E),DCHECK
- Q(c);CHECK,N_GUARD::B(J)+R(E)
- R(d);N_GUARD,XP(B)::S(F),XP(h)
- R(d);N_GUARD::S(F),XP(h)
- B(b);N_GUARD::QAR1(C),XB(b)
- B(b);N_GUARD::R1(I),XB(b)
- B(b);N_GUARD::S(F),XB(b)
- S(a);N_GUARD::QAB1(C),XS(a)
- Tries
- Try
- R(E);CHECK
- Vars
- Q(c);XB(J)::QAR1(C)
- Refutation
- K(f);CHECK,P-FLIGHT
- Try
- R(I);
- Threat
- DUALS(2)
- Refutation
- Q(c);CHECK
- Try
- Q(C);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
- Refutation
- S(a);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_GUARD::B(J)+R(E)
- Refutation
- P(e);XQ(C)
- Try
- P(B);CHECK
- Vars
- S(a);OGATE,XP(B)::QAB1(C),XS(a)
- Refutation
- K(f);CHECK,P-FLIGHT
- Try
- P(B);
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK,N_GUARD::B(J)+R(E)
- Q(c);XB(J)::R1(E)
- B(b);OGATE,XP(B)::R1(I),XB(b)
- S(a);N_GUARD::QAB1(C),XS(a)
- Refutation
- R(d);CHECK
- Try
- P(H);
- Threat
- DUALS(4)
- Vars
- Q(c);SBLOCK::B(J)+R(E),DCHECK
- Refutation
- Q(c);XB(J)
- Try
- P(H);
- Threat
- DUALS(3)
- Vars
- Q(c);SBLOCK::B(J)+R(E),DCHECK
- Refutation
- Q(c);XB(J)
- Try
- Actual
- K(D);P-FLIGHT,XP(e)
- Threat
- QAB1(C)
- Vars
- Q(c);CHECK,N_GUARD::B(J)+R(E)
- B(b);CHECK,N_GUARD::S(F),XB(b)
- S(a);CHECK,N_GUARD::QAB(C),XS(a)
- S(a);CHECK,N_GUARD::QAB1(C),XS(a)
- R(d);N_GUARD,XP(B)::S(F),XP(h)
- Q(c);SBLOCK::B(J)+R(E),DCHECK
- B(b);N_GUARD::R1(I),XB(b)
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).