MESON Chess Problem Database
Problem Display
PID: 9949 (4R3/1p3KN1/1B1p4/3kN1b1/8/3P1p2/6bQ/2R5 w - - 0 1)
Macleod, Norman Alasdair
American Chess Bulletin, 1961
#2
8 + 6
| 3749 | FIDE Album (1959-1961) | 1966 |
| 5862 | An ABC of Chess Problems | 1970 |
| 4640 | Chess Wizardry: The New ABC of Chess Problems | 1996 |
| 133 | The Problemist Supplement | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Bf1
- 2.Qa2#
- 1...Bh1
- 2.Qa2#
- 1...Bh3
- 2.Qa2#
- 1...f2
- 2.Qxg2#
- 1...dxe5
- 2.Qxe5#
- 1...Bf1
- Tries
- 1.Sg4?
- 1...Bd2
- 2.Sf6#
- 1...Bf1
- 2.Qa2#
- 1...Bh1
- 2.Qa2#
- 1...Bh3
- 2.Qa2#
- 1...Be3
- 2.Sxe3#
- 2.Sf6#
- 1...Bf4
- 2.Sf6#
- 1...Bh4
- 2.Se3#
- 1...Bf6
- 2.Se3#
- 2.Sxf6#
- 1...Bh6
- 2.Sf6#
- 1...Be7
- 2.Se3#
- 1...Bd8
- 2.Se3#
- 1...f2
- 2.Qxg2#
- 1...Bxc1!
- 1...Bd2
- 1.Sc6?
- threat
- 2.Sb4#
- 1...Bd2
- 2.Se7#
- 1...bxc6!
- threat
- 1.Sf5?
- 1...Bxc1
- 2.Se7#
- 1...dxe5
- 2.Rc5#
- 2.Rxe5#
- 2.Qxe5#
- 1...Bd2
- 2.Se7#
- 1...Bf1
- 2.Qa2#
- 1...Bh1
- 2.Qa2#
- 1...Bh3
- 2.Qa2#
- 1...Be3
- 2.Sxe3#
- 2.Se7#
- 1...Bh4
- 2.Se3#
- 1...Bf6
- 2.Se3#
- 1...Bh6
- 2.Se7#
- 1...Be7
- 2.Se3#
- 2.Sxe7#
- 1...Bd8
- 2.Se3#
- 1...f2
- 2.Qxg2#
- 1...Bf4!
- 1...Bxc1
- 1.Sh5?
- 1...Bxc1
- 2.Sf6#
- 1...dxe5
- 2.Qxe5#
- 1...Bd2
- 2.Sf6#
- 1...Bf1
- 2.Qa2#
- 1...Bh1
- 2.Qa2#
- 1...Bh3
- 2.Qa2#
- 1...Be3
- 2.Sf6#
- 1...Bf4
- 2.Sxf4#
- 2.Sf6#
- 1...Bh4
- 2.Sf4#
- 1...Bf6
- 2.Sf4#
- 2.Sxf6#
- 1...Bh6
- 2.Sf6#
- 1...Bd8
- 2.Sf4#
- 1...f2
- 2.Qxg2#
- 1...Be7!
- 1...Bxc1
- 1.Se6?
- threat
- 2.Sc7#
- 1...Bd8
- 2.Sf4#
- 1...dxe5!
- threat
- 1.Rc4?
- threat
- 2.Rd4#
- 1...dxe5
- 2.Qxe5#
- 1...Be3!
- threat
- 1.Rc5+?
- 1...Kd4
- 2.Sf5#
- 1...dxc5!
- 1...Kd4
- 1.Qg1?
- threat
- 2.Qd4#
- 1...dxe5
- 2.Qc5#
- 1...f2
- 2.Qxg2#
- 1...Be3!
- threat
- 1.Qf4?
- threat
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...dxe5
- 2.Qxe5#
- 1...Be7
- 2.Qd4#
- 2.Qe4#
- 1...f2
- 2.Qc4#
- 2.Qd4#
- 1...Bxf4!
- threat
- 1.Sg4?
- Keys
- 1.Sg6!
- 1...Bxc1
- 2.Se7#
- 1...Bd2
- 2.Se7#
- 1...Bf1
- 2.Qa2#
- 1...Bh1
- 2.Qa2#
- 1...Bh3
- 2.Qa2#
- 1...Be3
- 2.Se7#
- 1...Bf4
- 2.Sxf4#
- 1...Bh4
- 2.Sf4#
- 1...Bf6
- 2.Sf4#
- 1...Bh6
- 2.Se7#
- 1...Be7
- 2.Sxe7#
- 1...Bd8
- 2.Sf4#
- 1...f2
- 2.Qxg2#
- 1...Bxc1
- 1.Sg6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 1
- Sets
- B(a);OGATE::QAB(B)
- P(b);OGATEB::QAB(B),XB(a)
- P(e);OGATE,XS(D)::QAR1(B),XP(e)
- Tries
- Try
- S(D);
- Vars
- B(d);N_GUARD::S(D)
- B(a);OGATE::QAB(B)
- P(b);OGATEB::QAB(B),XB(a)
- Refutation
- B(d);XR(A)
- Try
- S(D);
- Threat
- S(D)
- Vars
- B(d);N_GUARD::S(D)
- Refutation
- P(f);XS(D)
- Try
- S(G);
- Vars
- B(d);N_GUARD,XR(A)::S(G)
- B(d);N_GUARD::S(G)
- B(a);OGATE::QAB(B)
- P(b);OGATEB::QAB(B),XB(a)
- Refutation
- B(d);
- Try
- S(G);
- Vars
- B(d);N_GUARD,XR(A)::S(G)
- P(e);OGATE,XS(D)::QAR1(B),XP(e)
- B(d);N_GUARD::S(G)
- B(a);OGATE::QAB(B)
- P(b);OGATEB::QAB(B),XB(a)
- Refutation
- B(d);
- Try
- S(G);
- Threat
- S(G)
- Vars
- B(d);N_GUARD::S(G)
- Refutation
- P(e);XS(D)
- Try
- R(A);
- Threat
- R1(A)
- Vars
- P(e);OGATE,XS(D)::QAR1(B),XP(e)
- Refutation
- B(d);
- Try
- R(A);CHECK
- Vars
- K(c);P-FLIGHT::S(G)
- Refutation
- P(e);XR(A)
- Try
- Q(B);
- Threat
- QAR1(B)
- Vars
- P(e);N_GUARD,XS(D)::QAR1(B)
- P(b);OGATEB::QAB(B),XB(a)
- Refutation
- B(d);
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- P(e);OGATE,XS(D)::QAR1(B),XP(e)
- Refutation
- B(d);XQ(B)
- Try
- Actual
- S(D);
- Vars
- B(d);N_GUARD,XR(A)::S(D)
- B(d);N_GUARD::S(D)
- B(a);OGATE::QAB(B)
- B(d);N_GUARD::S(D),XB(d)
- P(b);OGATEB::QAB(B),XB(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).