MESON Chess Problem Database
Problem Display
PID: 100883 (8/8/K1PQ4/8/Bpk1qB2/2P5/4P2R/1N6 w - - 0 1)
Corrias, Antonio G
Good Companions, 1918
#2
9 + 3
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxb1
- 2.Qd4#
- 1...Qh1
- 2.Qd4#
- 1...Qc2
- 2.Qd4#
- 1...Qg2
- 2.Qd4#
- 1...Qd3
- 2.exd3#
- 1...Qf3
- 2.Qd4#
- 1...Qd5
- 2.Qxb4#
- 1...Qf5
- 2.Qd4#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qg6
- 2.Qd4#
- 1...Qh7
- 2.Qd4#
- 1...Qxe2
- 2.Qd4#
- 1...Qd4
- 2.Qxd4#
- 1...Qe6
- 2.Qd4#
- 1...Qe7
- 2.Qd4#
- 1...Qe8
- 2.Qd4#
- 1...bxc3
- 2.Sa3#
- 1...b3
- 2.Bb5#
- 1...Qxb1
- Tries
- 1.Kb6?
- threat
- 2.Qc5#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qd4+
- 2.Qxd4#
- 1...Qxe2
- 2.Qd4#
- 1...Qd5
- 2.Qxb4#
- 1...Qf5
- 2.Qd4#
- 1...Qe5
- 2.Qd3#
- 1...Qe7
- 2.Qd3#
- 2.Qd4#
- 1...Qe3+!
- threat
- 1.Sa3+?
- 1...Kxc3
- 2.Qd2#
- 1...bxa3!
- 1...Kxc3
- 1.Be3?
- threat
- 2.Qc5#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qd5
- 2.Qxb4#
- 1...Qf5
- 2.Qd4#
- 1...Qd4
- 2.Qxd4#
- 1...Qe5
- 2.Qd3#
- 1...Qe7
- 2.Qd3#
- 2.Qd4#
- 1...Qxe3!
- threat
- 1.Rh5?
- threat
- 2.Rc5#
- 2.Qxb4#
- 2.Qc5#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qxb1
- 2.Rc5#
- 2.Qc5#
- 2.Qd4#
- 1...Qxe2
- 2.Rc5#
- 2.Qd4#
- 2.Qd5#
- 1...bxc3
- 2.Sa3#
- 2.Qc5#
- 1...Qe3
- 2.Qxb4#
- 2.Qd5#
- 1...Qd5
- 2.Qxb4#
- 2.Qxd5#
- 1...Qf5
- 2.Qd4#
- 1...Qd4
- 2.Qxb4#
- 2.Qxd4#
- 1...Qe7
- 2.Rc5#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...b3
- 2.Bb5#
- 2.Rc5#
- 2.Qb4#
- 2.Qc5#
- 1...Qe5!
- threat
- 1.Qd3+?
- 1...Kc5
- 2.Bd6#
- 2.Qb5#
- 1...Qxd3!
- 1...Kc5
- 1.Kb6?
- Keys
- 1.Rh4!
- 1...Qxc6+
- 2.Qxc6#
- 1...Qxb1
- 2.Qd4#
- 1...Qxe2
- 2.Qd4#
- 1...Qxf4
- 2.Rxf4#
- 1...bxc3
- 2.Sa3#
- 1...Qe3
- 2.Bxe3#
- 1...Qh1
- 2.Qd4#
- 1...Qc2
- 2.Qd4#
- 1...Qg2
- 2.Qd4#
- 1...Qd3
- 2.exd3#
- 1...Qf3
- 2.Qd4#
- 1...Qd5
- 2.Qxb4#
- 1...Qf5
- 2.Qd4#
- 1...Qg6
- 2.Qd4#
- 1...Qh7
- 2.Qd4#
- 1...Qd4
- 2.Qxd4#
- 1...Qe5
- 2.Bxe5#
- 1...Qe6
- 2.Qd4#
- 1...Qe7
- 2.Qd4#
- 1...Qe8
- 2.Be5#
- 2.Qd4#
- 1...b3
- 2.Bb5#
- 1...Qxc6+
- 1.Rh4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- Q(c);N_GUARD,XS(A)::QAR1(I)
- Q(c);N_GUARD::QAR1(I)
- Q(c);OGATE::P(B),XQ(c)
- Q(c);SBLOCK::QAR1(I),XP(a)
- Q(c);CHECK,OGATE,XP(H)::QAR2(I),XQ(c)
- Q(c);N_GUARD,XP(B)::QAR1(I)
- Q(c);N_GUARD::QAR1(I),XQ(c)
- P(a);N_GUARD,SBLOCK,XP(D)::S(A)
- P(a);SBLOCK::B(E)
- Tries
- Try
- K(G);P-FLIGHT
- Threat
- QAR1(I)
- Vars
- Q(c);CHECK,OGATE,XP(H)::QAR2(I),XQ(c)
- Q(c);CHECK,N_GUARD::QAR1(I),XQ(c)
- Q(c);N_GUARD,XP(B)::QAR1(I)
- Q(c);SBLOCK::QAR1(I),XP(a)
- Q(c);N_GUARD::QAR1(I)
- Q(c);N_GUARD::QAB1(I)
- Refutation
- Q(c);CHECK
- Try
- S(A);CHECK
- Vars
- K(b);P-FLIGHT,XP(D)::QAB1(I)
- Refutation
- P(a);XS(A)
- Try
- B(F);
- Threat
- QAR1(I)
- Vars
- Q(c);CHECK,OGATE,XP(H)::QAR2(I),XQ(c)
- Q(c);SBLOCK::QAR1(I),XP(a)
- Q(c);N_GUARD::QAR1(I)
- Q(c);N_GUARD::QAR1(I),XQ(c)
- Q(c);N_GUARD::QAB1(I)
- Refutation
- Q(c);XB(F)
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK,OGATE,XP(H)::QAR2(I),XQ(c)
- Q(c);N_GUARD::QAR1(I)
- Refutation
- Q(c);
- Try
- Q(I);CHECK
- Refutation
- Q(c);XQ(I)
- Try
- Actual
- R(C);
- Vars
- Q(c);CHECK,OGATE,XP(H)::QAR2(I),XQ(c)
- Q(c);N_GUARD,XS(A)::QAR1(I)
- Q(c);N_GUARD,XP(B)::QAR1(I)
- Q(c);OGATE,P_SPINQ(c),XB(F)::R(C),XQ(c)
- P(a);N_GUARD,SBLOCK,XP(D)::S(A)
- Q(c);OGATEB::R(C)+B(F),XQ(c)
- Q(c);N_GUARD::QAR1(I)
- Q(c);OGATE::P(B),XQ(c)
- Q(c);SBLOCK::QAR1(I),XP(a)
- Q(c);N_GUARD::QAR1(I),XQ(c)
- P(a);SBLOCK::B(E)
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).