MESON Chess Problem Database
Problem Display
PID: 186241 (7k/4N3/2p3K1/2p3P1/b2q4/Qp6/R1p5/B7 w - - 0 1)
May, Luigi
Bulletin Ouvrier des Echecs, 1949
#2
6 + 7
| 15601 | Albrecht-Leiss-Degener Collection | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Bxb2#
- 2.Qxb2#
- 1...Qc3
- 2.Bxc3#
- 1...Qe5
- 2.Bxe5#
- 1...Qf6+
- 2.Bxf6#
- 1...Qg7+
- 2.Bxg7#
- 1...Bb5
- 2.Qa8#
- 1...c1Q
- 2.Rh2#
- 1...c1S
- 2.Rh2#
- 1...c1B
- 2.Rh2#
- 1...c1R
- 2.Rh2#
- 1...bxa2
- 2.Qh3#
- 1...c4
- 2.Bxd4#
- 1...Qb2
- Tries
- 1.Rxc2?
- threat
- 2.Rh2#
- 1...Qf6+
- 2.Bxf6#
- 1...Qg7+
- 2.Bxg7#
- 1...bxc2
- 2.Qh3#
- 1...b2!
- threat
- 1.Qb4?
- threat
- 2.Qb8#
- 1...Qf6+
- 2.Bxf6#
- 1...Qg7+
- 2.Bxg7#
- 1...cxb4
- 2.Bxd4#
- 1...Bb5
- 2.Ra8#
- 1...b2!
- threat
- 1.Qxc5?
- threat
- 2.Bxd4#
- 2.Qxd4#
- 1...Qf6+
- 2.Bxf6#
- 1...Qg7+
- 2.Bxg7#
- 1...b2
- 2.Qxd4#
- 1...Qb2
- 2.Bxb2#
- 1...Qc3
- 2.Bxc3#
- 2.Qxc3#
- 1...Qe5
- 2.Bxe5#
- 2.Qxe5#
- 1...Qxa1!
- threat
- 1.Qxb3?
- threat
- 2.Qg8#
- 2.Qh3#
- 2.Qb8#
- 1...Qf6+
- 2.Bxf6#
- 1...Qg7+
- 2.Bxg7#
- 1...Qc3
- 2.Bxc3#
- 2.Qg8#
- 2.Qxc3#
- 2.Qb8#
- 1...Bb5
- 2.Ra8#
- 2.Qg8#
- 2.Qh3#
- 1...c4
- 2.Bxd4#
- 2.Qh3#
- 2.Qb8#
- 1...Bxb3!
- threat
- 1.Qxa4?
- threat
- 2.Qa8#
- 1...Qf6+
- 2.Bxf6#
- 1...Qg7+
- 2.Bxg7#
- 1...b2!
- threat
- 1.Rxc2?
- Keys
- 1.Qb2!
- 1...Qf6+
- 2.Qxf6#
- 1...Qg7+
- 2.Qxg7#
- 1...Qxb2
- 2.Bxb2#
- 1...bxa2
- 2.Qb8#
- 1...c1Q
- 2.Qh2#
- 1...c1S
- 2.Qh2#
- 1...c1B
- 2.Qh2#
- 1...c1R
- 2.Qh2#
- 1...Qc3
- 2.Qxc3#
- 1...Qe5
- 2.Qxe5#
- 1...Bb5
- 2.Ra8#
- 1...c4
- 2.Qxd4#
- 1...Qf6+
- 1.Qb2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 11
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(d);OGATEB::B(A),XQ(d)
- Q(d);OGATE::B(A),XQ(d)
- Q(d);CHECK,OGATE::B(A),XQ(d)
- B(c);OGATE::QAB1(C)
- P(a);OGATE::R(B)
- P(b);OGATE,XR(B)::QAR(C)
- P(e);N_GUARD::B(A),XQ(d)
- Tries
- Try
- R(B);XP(a)
- Threat
- R(B)
- Vars
- Q(d);CHECK,OGATE::B(A),XQ(d)
- P(b);OGATE,XR(B)::QAR(C)
- Refutation
- P(b);N_SPINQ(d)
- Try
- Q(C);
- Threat
- QAR(C)
- Vars
- Q(d);CHECK,OGATE::B(A),XQ(d)
- P(e);N_GUARD,XQ(C)::B(A),XQ(d)
- B(c);OGATE::R(B)
- Refutation
- P(b);N_SPINQ(d)
- Try
- Q(C);XP(e)
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE::B(A),XQ(d)
- P(b);N_SPINQ(d)::QAB(C),XQ(d)
- Q(d);OGATEB::B(A),XQ(d)
- Refutation
- Q(d);N_SPINQ(d),XB(A)
- Try
- Q(C);XP(b)
- Threat
- DUALS(3)
- Vars
- Q(d);CHECK,OGATE::B(A),XQ(d)
- Refutation
- B(c);XQ(C)
- Try
- Q(C);XB(c)
- Threat
- QAB1(C)
- Vars
- Q(d);CHECK,OGATE::B(A),XQ(d)
- Refutation
- P(b);N_SPINQ(d)
- Try
- Actual
- Q(C);
- Vars
- Q(d);CHECK,OGATE::QAB(C),XQ(d)
- Q(d);CHECK,OGATE::QAB1(C),XQ(d)
- Q(d);OGATE,XQ(C)::B(A),XQ(d)
- P(b);OGATE,XR(B)::QAR(C)
- P(a);OGATE::QAR(C)
- Q(d);OGATEB::QAB(C),XQ(d)
- Q(d);OGATE::QAB(C),XQ(d)
- B(c);OGATE::R(B)
- P(e);N_GUARD::QAB(C),XQ(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).