MESON Chess Problem Database
Problem Display
PID: 50705 (4k1br/1N1p1qRN/3P3p/2P4Q/8/1p1p4/bP1B4/R3K3 w Qk - 0 1)
Anonymous
Source?, 0000
#2
10 + 9
| 273 | Mat Plus | 1995 |
SOLUTION
- SOUND
- Sets
- 1...Qxh5
- 2.Re7#
- 1...Qg6
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bb1
- 2.Ra8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qxh5
- Tries
- 1.Kd1?
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- 1...Bb1
- 2.Ra8#
- 1...Qxh5+!
- 1...Rxh7
- 1.Bc1?
- 1...Qxh5
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- 1...Bb1
- 2.Ra8#
- 1...d2+!
- 1...Qxh5
- 1.Bc3?
- 1...Qxh5
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- 1...Bb1
- 2.Ra8#
- 1...d2+!
- 1...Qxh5
- 1.Be3?
- 1...Qxh5
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- 1...Bb1
- 2.Ra8#
- 1...d2+!
- 1...Qxh5
- 1.Bb4?
- 1...Qxh5
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- 1...Bb1
- 2.Ra8#
- 1...d2+!
- 1...Qxh5
- 1.Bf4?
- 1...Qxh5
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- 1...Bb1
- 2.Ra8#
- 1...d2+!
- 1...Qxh5
- 1.Bxh6?
- 1...Qxh5
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- 1...Bb1
- 2.Ra8#
- 1...d2+!
- 1...Qxh5
- 1.Rb1?
- 1...Qxh5
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- 1...Bxb1!
- 1...Qxh5
- 1.Rc1?
- 1...Qxh5
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- 1...Bb1!
- 1...Qxh5
- 1.Rd1?
- 1...Qxh5
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- 1...Bb1!
- 1...Qxh5
- 1.Qg6?
- 1...Qxg6
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Bb1
- 2.Ra8#
- 1...h5!
- 1...Qxg6
- 1.Qe5+?
- 1...Qe7
- 2.Rxe7#
- 2.Qxe7#
- 1...Qe6!
- 1...Qe7
- 1.c6?
- 1...Qxh5
- 2.Re7#
- 2.cxd7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Bb1
- 2.Ra8#
- 1...Qg6
- 2.Re7#
- 2.cxd7#
- 1...dxc6!
- 1...Qxh5
- 1.Kd1?
- Keys
- 1.0-0-0!
- threat
- 2.Re1#
- 1...Qxh5
- 2.Re7#
- 1...Rxh7
- 2.Rxg8#
- 1...Bxh7
- 2.Qxf7#
- 1...Qg6
- 2.Re7#
- threat
- 1.0-0-0!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- Q(f);OGATE::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(a);OGATE::R(A)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
- B(a);OGATE::R(A)
- Refutation
- Q(f);CHECK,N_SPINQ(f),XQ(F)
- Try
- B(D);
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
- B(a);OGATE::R(A)
- Refutation
- P(c);CHECK
- Try
- B(D);
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
- B(a);OGATE::R(A)
- Refutation
- P(c);CHECK
- Try
- B(D);
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
- B(a);OGATE::R(A)
- Refutation
- P(c);CHECK
- Try
- B(D);
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
- B(a);OGATE::R(A)
- Refutation
- P(c);CHECK
- Try
- B(D);
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
- B(a);OGATE::R(A)
- Refutation
- P(c);CHECK
- Try
- B(D);XP(d)
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
- B(a);OGATE::R(A)
- Refutation
- P(c);CHECK
- Try
- R(A);
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
- Refutation
- B(a);XR(A)
- Try
- R(A);
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
- Refutation
- B(a);
- Try
- R(A);
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
- Refutation
- B(a);
- Try
- Q(F);
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- B(a);OGATE::R(A)
- Refutation
- P(d);
- Try
- Q(F);CHECK,N_PINQ(f)
- Refutation
- Q(f);P_PINQ(F),P_SPINQ(f)
- Try
- P(E);
- Vars
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- B(a);OGATE::R(A)
- Refutation
- P(e);XP(E)
- Try
- Actual
- K(B);0-0-0
- Threat
- R(A)
- Vars
- Q(f);N_SPINQ(f),OGATE,XQ(F)::R1(I)
- R(i);N_GUARD,XS(J)::R(I),XB(h)
- B(h);N_GUARD,XS(J)::QAB1(F),XQ(f)
- Q(f);OGATE::R1(I)
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).