MESON Chess Problem Database
Problem Display
PID: 2050 (5Q1n/KpBrP1P1/B5P1/8/1P1k2b1/2N1b1N1/3P1rn1/7q w - - 0 1)
Barnett, James P
Source?, 0000
#2
11 + 9
| 1679 | American Chess Nuts | 1868 |
SOLUTION
- SOUND
- Sets
- 1...Rxd2
- 2.Qf6#
- 1...Re2
- 2.Qf6#
- 1...Rf3
- 2.Sge2#
- 1...Rf6
- 2.Qxf6#
- 1...Bf3
- 2.Sf5#
- 2.Qf6#
- 1...Bf5
- 2.Qf6#
- 1...Sf4
- 2.Qf6#
- 1...Rxd2
- Tries
- 1.Sge2+?
- 1...Rxe2
- 2.Qf6#
- 1...Bxe2!
- 1...Rxe2
- 1.Sf5+?
- 1...Bxf5
- 2.Qf6#
- 1...Rxf5!
- 1...Bxf5
- 1.e8Q?
- threat
- 2.Be5#
- 2.Bb6#
- 2.Qc5#
- 2.Qe4#
- 2.Qe5#
- 1...Rxd2
- 2.Be5#
- 2.Qc5#
- 2.Qe5#
- 2.Qf6#
- 1...Rxf8
- 2.Be5#
- 2.Bb6#
- 2.Qe4#
- 2.Qe5#
- 1...Rxc7
- 2.Qd6#
- 2.Qe4#
- 1...Bxd2
- 2.Qc5#
- 2.Qe5#
- 1...Sxg6
- 2.Bb6#
- 2.Qc5#
- 2.Qe4#
- 1...bxa6
- 2.Qe4#
- 1...b5
- 2.Qe4#
- 1...Qb1
- 2.Be5#
- 2.Bb6#
- 2.Qc5#
- 2.Qe5#
- 1...Qh5
- 2.Qe4#
- 1...Rf4
- 2.Be5#
- 2.Bb6#
- 2.Qc5#
- 2.Qe5#
- 1...Rf5
- 2.Qe4#
- 1...Rf6
- 2.Be5#
- 2.Qc5#
- 2.Qe4#
- 2.Qe5#
- 2.Qxf6#
- 1...Rd5
- 2.Qe4#
- 1...Rd6
- 2.Qxd6#
- 2.Qe4#
- 1...Bf4
- 2.Bb6#
- 2.Qc5#
- 2.Qe4#
- 1...Bf3
- 2.Sf5#
- 2.Be5#
- 2.Bb6#
- 2.Qc5#
- 2.Qe5#
- 2.Qf6#
- 1...Bf5
- 2.Be5#
- 2.Bb6#
- 2.Qc5#
- 2.Qe5#
- 2.Qf6#
- 1...Be6
- 2.Qc5#
- 1...Se1
- 2.Be5#
- 2.Bb6#
- 2.Qc5#
- 2.Qxe3#
- 2.Qe5#
- 1...Sf4
- 2.Be5#
- 2.Bb6#
- 2.Qc5#
- 2.Qxe3#
- 2.Qe5#
- 2.Qf6#
- 1...Sh4
- 2.Be5#
- 2.Bb6#
- 2.Qc5#
- 2.Qxe3#
- 2.Qe5#
- 1...Sf7
- 2.Bb6#
- 2.Qc5#
- 2.Qe4#
- 1...b6
- 2.Qe4#
- 2.Qe5#
- 1...Re7!
- threat
- 1.gxh8Q+?
- 1...Rf6
- 2.Qhxf6#
- 2.Qfxf6#
- 1...Qxh8!
- 1...Rf6
- 1.gxh8B+?
- 1...Rf6
- 2.Bxf6#
- 2.Qxf6#
- 1...Qxh8!
- 1...Rf6
- 1.Sge2+?
- Keys
- 1.Qf3!
- threat
- 2.Qe4#
- 1...Rxd2
- 2.Qf6#
- 1...Rxf3
- 2.Sge2#
- 1...Rxe7
- 2.Qd5#
- 1...Bxd2
- 2.Qd3#
- 1...Bxf3
- 2.Sf5#
- 1...Qb1
- 2.gxh8Q#
- 2.gxh8B#
- 1...Bf5
- 2.Sxf5#
- 1...Se1
- 2.Qxe3#
- 1...Sf4
- 2.Qxe3#
- 1...Sh4
- 2.Qxe3#
- 2.gxh8Q#
- 2.gxh8B#
- threat
- 1.Qf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- R(b);N_GUARD,XP(A)::QAB(K)
- R(b);N_GUARD::QAB(K)
- R(b);N_GUARD,S_CUTB(f)::S(C)
- R(b);N_GUARD::QAB(K),XR(b)
- B(f);S_CUTR(b)::QAB(K)
- S(c);S_CUTR(b)::QAB(K)
- Tries
- Try
- S(C);CHECK
- Vars
- R(b);XS(C)::QAB(K)
- Refutation
- B(f);XS(C)
- Try
- S(C);CHECK
- Vars
- B(f);XS(C)::QAB(K)
- Refutation
- R(b);XS(C)
- Try
- P(I);
- Threat
- DUALS(5)
- Vars
- P(g);P_PINB(H),XB(E)::QAR1(I)
- P(g);P_PINB(H)::QAR1(I)
- Q(a);::QAR1(I)
- R(b);::QAR1(I)
- R(h);::QAR1(I)
- B(f);::QAB1(K)
- Refutation
- R(h);
- Try
- P(J);CHECK,XS(i)
- Refutation
- Q(a);XQ(J)
- Try
- P(J);CHECK,XS(i)
- Refutation
- Q(a);XB(J)
- Try
- Actual
- Q(K);
- Threat
- QAR1(K)
- Vars
- R(b);N_GUARD,XP(A)::QAB(K)
- R(b);N_GUARD,XQ(K)::S(C)
- R(h);N_GUARD,XP(I)::QAR1(K)
- B(d);OGATE,XP(A)::QAR1(K)
- B(f);N_GUARD,XQ(K)::S(C)
- Q(a);N_GUARD::PXS(i)=Q
- B(f);N_GUARD::S(C),XB(f)
- S(c);N_GUARD::QAB1(K),XB(d)
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).