MESON Chess Problem Database
Problem Display
PID: 89396 (6R1/1pk5/2pq4/4B3/3Q4/5K2/8/8 w - - 0 1)
Scheel, Johan
Zlata Praha, 1915
#2
4 + 4
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kd7
- 2.Qxd6#
- 1...Qxe5
- 2.Qd8#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 1...Kd7
- Tries
- 1.Kf2?
- 1...Kd7
- 2.Qxd6#
- 1...Qxe5
- 2.Qd8#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 1...b6!
- 1...Kd7
- 1.Kg2?
- 1...Kd7
- 2.Qxd6#
- 1...Qxe5
- 2.Qd8#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 1...b6!
- 1...Kd7
- 1.Kg4?
- 1...Kd7
- 2.Qxd6#
- 1...Qxe5
- 2.Qd8#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 1...b6!
- 1...Kd7
- 1.Bg3?
- 1...Qf4+
- 2.Bxf4#
- 1...Kd7
- 2.Qxd6#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 1...b6
- 2.Qg7#
- 1...Qe5
- 2.Bxe5#
- 2.Qd8#
- 1...Qxg3+!
- 1...Qf4+
- 1.Bf4?
- 1...Kd7
- 2.Qxd6#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 1...b6
- 2.Qg7#
- 1...Qe5
- 2.Bxe5#
- 2.Qd8#
- 1...Qxf4+!
- 1...Kd7
- 1.Ra8?
- 1...Kd7
- 2.Qxd6#
- 1...Qxe5
- 2.Qd8#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 1...b6!
- 1...Kd7
- 1.Rb8?
- 1...Kd7
- 2.Qxd6#
- 1...Qxe5
- 2.Qd8#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 2.Qxd6#
- 1...b6
- 2.Qxd6#
- 1...Kxb8!
- 1...Kd7
- 1.Rf8?
- 1...Kd7
- 2.Qxd6#
- 1...Qxe5
- 2.Qd8#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 1...b6!
- 1...Kd7
- 1.Rh8?
- 1...Kd7
- 2.Qxd6#
- 1...Qxe5
- 2.Qd8#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 1...b6!
- 1...Kd7
- 1.Kf2?
- Keys
- 1.Bh2!
- 1...Qg3+
- 2.Bxg3#
- 1...Qf4+
- 2.Bxf4#
- 1...Kd7
- 2.Qxd6#
- 1...Qxh2
- 2.Qd8#
- 1...c5
- 2.Qxd6#
- 1...b5
- 2.Qa7#
- 1...b6
- 2.Qg7#
- 1...Qe5
- 2.Bxe5#
- 2.Qd8#
- 1...Qg3+
- 1.Bh2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XB(C)::QAB1(B)
- P(a);::QAB1(B),XQ(b)
- P(c);OGATEB::QAR2(B)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XB(C)::QAB1(B)
- P(a);::QAB1(B),XQ(b)
- P(c);OGATEB::QAR2(B)
- Refutation
- P(c);
- Try
- K(A);S_FLIGHT
- Vars
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XB(C)::QAB1(B)
- P(a);::QAB1(B),XQ(b)
- P(c);OGATEB::QAR2(B)
- Refutation
- P(c);
- Try
- K(A);S_FLIGHT
- Vars
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XB(C)::QAB1(B)
- P(a);::QAB1(B),XQ(b)
- P(c);OGATEB::QAR2(B)
- Refutation
- P(c);
- Try
- B(C);
- Vars
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- P(a);::QAB1(B),XQ(b)
- P(c);OGATEB::QAR2(B)
- P(c);SBLOCK::QAR(B)
- Refutation
- Q(b);CHECK,N_SPINQ(b),XB(C)
- Try
- B(C);
- Vars
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- P(a);::QAB1(B),XQ(b)
- P(c);OGATEB::QAR2(B)
- P(c);SBLOCK::QAR(B)
- Refutation
- Q(b);CHECK,N_SPINQ(b),XB(C)
- Try
- R(D);
- Vars
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XB(C)::QAB1(B)
- P(a);::QAB1(B),XQ(b)
- P(c);OGATEB::QAR2(B)
- Refutation
- P(c);
- Try
- R(D);
- Vars
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XB(C)::QAB1(B)
- P(a);::QAB1(B),XQ(b)
- P(c);::QAB1(B),XQ(b)
- Refutation
- K(d);S_FLIGHT,XR(D)
- Try
- R(D);
- Vars
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XB(C)::QAB1(B)
- P(a);::QAB1(B),XQ(b)
- P(c);OGATEB::QAR2(B)
- Refutation
- P(c);
- Try
- R(D);
- Vars
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XB(C)::QAB1(B)
- P(a);::QAB1(B),XQ(b)
- P(c);OGATEB::QAR2(B)
- Refutation
- P(c);
- Try
- Actual
- B(C);
- Vars
- Q(b);CHECK,OGATEB::B(C),XQ(b)
- K(d);P-FLIGHT::QAR1(B),XQ(b)
- Q(b);N_SPINQ(b),OGATE,XB(C)::QAB1(B)
- P(a);::QAB1(B),XQ(b)
- P(c);OGATEB::QAR2(B)
- P(c);SBLOCK::QAR(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).