MESON Chess Problem Database
Problem Display
PID: 162042 (BB5q/3pPp2/2N2r2/2Pk4/1P4p1/3P1N2/2K3Qp/8 w - - 0 1)
Andrade, Barry Jack da Costa
The Observer, 1924
(First published on Sun Jan 6 1924)
#2
10 + 7
| 236 | The Field | 1955 |
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Ke6
- 2.Sfd4#
- 1...Rf4
- 2.Scd4#
- 2.Sd8#
- 1...Rf5
- 2.Scd4#
- 2.Sd8#
- 1...Rd6
- 2.Sfd4#
- 2.Sg5#
- 1...Re6
- 2.Sfe5#
- 1...Rg6
- 2.Sfd4#
- 2.Sg5#
- 1...Rh6
- 2.Sfd4#
- 2.Sg5#
- 1...d6
- 2.Scd4#
- 2.Sd8#
- 1...Ke6
- Tries
- 1.Se1+?
- 1...Ke6
- 2.Qe4#
- 1...Rf3!
- 1...Ke6
- 1.Sg1+?
- 1...Ke6
- 2.Qe4#
- 1...Rf3!
- 1...Ke6
- 1.Sd2+?
- 1...Ke6
- 2.Qe4#
- 1...Rf3!
- 1...Ke6
- 1.Sxh2+?
- 1...Ke6
- 2.Qe4#
- 1...Rf3!
- 1...Ke6
- 1.Sh4+?
- 1...Ke6
- 2.Qe4#
- 1...Rf3!
- 1...Ke6
- 1.Qe2?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Qxb8
- 2.Qe4#
- 1...Rxf3
- 2.Qe4#
- 1...Rxc6
- 2.Qe4#
- 1...Qh5
- 2.Qe4#
- 1...Qh7
- 2.Qe5#
- 1...Rf4
- 2.Scd4#
- 2.Sa5#
- 2.Sa7#
- 2.Sd8#
- 1...Rf5
- 2.Scd4#
- 2.Sa5#
- 2.Sa7#
- 2.Sd8#
- 2.Qe4#
- 1...Rd6
- 2.Qe4#
- 1...Rg6
- 2.Qe4#
- 1...Rh6
- 2.Qe4#
- 1...d6
- 2.Scd4#
- 2.Sa5#
- 2.Sa7#
- 2.Sd8#
- 2.Qe4#
- 1...Re6!
- threat
- 1.Qxg4?
- threat
- 2.Qc4#
- 2.Qe4#
- 1...Qh7
- 2.Qc4#
- 1...Rf4
- 2.Scd4#
- 2.Sa5#
- 2.Sce5#
- 2.Sa7#
- 2.Sd8#
- 2.Qxd7#
- 1...Re6
- 2.Qc4#
- 1...Qh4!
- threat
- 1.e8Q?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Rxf3
- 2.Qxd7#
- 2.Qxf7#
- 2.Qe4#
- 1...Rxc6
- 2.Qxd7#
- 2.Qxf7#
- 2.Qe4#
- 1...Qh5
- 2.Qe4#
- 1...Qh7
- 2.Qe5#
- 1...Rf4
- 2.Scd4#
- 2.Sa5#
- 2.Sce5#
- 2.Sa7#
- 2.Sd8#
- 2.Qxd7#
- 1...Rf5
- 2.Scd4#
- 2.Sa5#
- 2.Sce5#
- 2.Sa7#
- 2.Sd8#
- 2.Qxd7#
- 2.Qe4#
- 1...Rd6
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sxh2#
- 2.Sfd4#
- 2.Sh4#
- 2.Sfe5#
- 2.Sg5#
- 2.Qe4#
- 1...Re6
- 2.Sfe5#
- 2.Se7#
- 1...Rg6
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sxh2#
- 2.Sfd4#
- 2.Sh4#
- 2.Sfe5#
- 2.Sg5#
- 2.Qe4#
- 1...Rh6
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sxh2#
- 2.Sfd4#
- 2.Sh4#
- 2.Sfe5#
- 2.Sg5#
- 2.Qe4#
- 1...d6
- 2.Scd4#
- 2.Sa5#
- 2.Sce5#
- 2.Sa7#
- 2.Sd8#
- 2.Qe4#
- 1...Qxe8!
- threat
- 1.e8S?
- threat
- 2.Sc7#
- 1...Ke6
- 2.Sfd4#
- 1...Qxe8!
- threat
- 1.Se1+?
- Keys
- 1.Kc3!
- threat
- 2.Qa2#
- 1...Rxf3+
- 2.Sd4#
- 1...Rf4+
- 2.Scd4#
- 1...Rf5+
- 2.Scd4#
- 1...Rxc6+
- 2.Sd4#
- 1...Rd6+
- 2.Sfd4#
- 1...Re6+
- 2.Sfe5#
- 1...Rg6+
- 2.Sfd4#
- 1...Rh6+
- 2.Sfd4#
- 1...Ke6
- 2.Sfd4#
- threat
- 1.Kc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- K(c);S_FLIGHT::S(D)
- R(d);N_GUARD,SBLOCK::QAB(B)+S(D)
- Tries
- Try
- S(D);CHECK
- Vars
- K(c);S_FLIGHT::QAR2(B)
- Refutation
- R(d);P_SPINR(d)
- Try
- S(D);CHECK
- Vars
- K(c);S_FLIGHT::QAR2(B)
- Refutation
- R(d);P_SPINR(d)
- Try
- S(D);CHECK
- Vars
- K(c);S_FLIGHT::QAR2(B)
- Refutation
- R(d);P_SPINR(d)
- Try
- S(D);CHECK,XP(a)
- Vars
- K(c);S_FLIGHT::QAR2(B)
- Refutation
- R(d);P_SPINR(d)
- Try
- S(D);CHECK
- Vars
- K(c);S_FLIGHT::QAR2(B)
- Refutation
- R(d);P_SPINR(d)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(g);XB(J)::QAB1(B)
- R(d);XS(D)::QAB1(B)
- R(d);P_PINP(F),P_SPINR(d),XS(G)::QAB1(B)
- Q(g);::QAB1(B)
- Q(g);P_PINP(C)::QAR1(B)
- R(d);::QAB1(B)
- Refutation
- R(d);
- Try
- Q(B);XP(b)
- Threat
- DUALS(2)
- Vars
- Q(g);P_PINP(C)::QAB1(B)
- R(d);SBLOCK::QAB1(B)
- Refutation
- Q(g);
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- Q(g);::QAB1(H)
- Q(g);P_PINP(C)::QAR1(H)
- Refutation
- Q(g);XQ(H)
- Try
- P(H);
- Threat
- S(H)
- Vars
- K(c);S_FLIGHT::S(D)
- Refutation
- Q(g);XS(H)
- Try
- Actual
- K(A);P-FLIGHT
- Threat
- QAB(B)
- Vars
- R(d);CHECK,N_GUARD,P_PINP(C),P_SPINR(d),XS(D)::B(I)+S(G)
- R(d);CHECK,N_GUARD::B(I)+S(G)
- R(d);CHECK,N_GUARD,P_PINP(F),P_SPINR(d),XS(G)::QAB(B)+S(D)
- R(d);CHECK,N_GUARD::QAB(B)+S(D)
- R(d);CHECK,N_GUARD,SBLOCK::QAB(B)+S(D)
- K(c);S_FLIGHT::S(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).