MESON Chess Problem Database
Problem Display
PID: 114810 (3Rr1B1/np6/QBPpq1N1/3k3p/6Nn/K2p1P2/2brP3/8 w - - 0 1)
Andrade, Barry Jack da Costa
Time & Tide, 1957
#2
10 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Re7
- 2.Sxe7#
- 1...Rxd8
- 2.Se7#
- 1...Rf8
- 2.Se7#
- 1...Sb5+
- 2.Qxb5#
- 1...Sxc6
- 2.Se3#
- 2.Sf6#
- 2.Sf4#
- 2.Qb5#
- 2.e4#
- 1...Sc8
- 2.Qb5#
- 1...bxc6
- 2.Se3#
- 2.Sf6#
- 2.Sf4#
- 2.e4#
- 1...Re7
- Tries
- 1.S4e5?
- threat
- 2.Qc4#
- 2.e4#
- 1...Sb5+
- 2.Qxb5#
- 1...Qxg8
- 2.Qc4#
- 1...Rxe2
- 2.Qc4#
- 1...Sxf3
- 2.Qc4#
- 1...dxe2
- 2.Qc4#
- 1...bxa6
- 2.e4#
- 1...Qf7
- 2.Qc4#
- 1...Bb3
- 2.e4#
- 1...Sxg6!
- threat
- 1.S6e5?
- threat
- 2.Qc4#
- 2.e4#
- 1...Sb5+
- 2.Qxb5#
- 1...Qxg8
- 2.Qc4#
- 1...Rxe2
- 2.Qc4#
- 1...Sxf3
- 2.Qc4#
- 1...dxe2
- 2.Qc4#
- 1...bxa6
- 2.e4#
- 1...Qf7
- 2.Qc4#
- 1...Bb3
- 2.e4#
- 1...hxg4!
- threat
- 1.Qa4?
- threat
- 2.Se3#
- 2.Sf6#
- 2.Sf4#
- 2.Qe4#
- 2.e4#
- 1...Sb5+
- 2.Qxb5#
- 1...Qxg8
- 2.Sf4#
- 1...Rxe2
- 2.Sf6#
- 2.Sf4#
- 1...Rxg8
- 2.Sf4#
- 1...Sxf3
- 2.Se3#
- 2.Sf6#
- 2.Sf4#
- 2.e4#
- 1...Sxg6
- 2.Qe4#
- 2.e4#
- 1...dxe2
- 2.Se3#
- 2.Sf6#
- 2.Sf4#
- 1...hxg4
- 2.Qe4#
- 2.e4#
- 1...Qf7
- 2.Sf4#
- 1...Rf8
- 2.Se3#
- 2.Se7#
- 2.Qe4#
- 2.e4#
- 1...Sg2
- 2.Sf6#
- 2.Qe4#
- 2.e4#
- 1...Sf5
- 2.Sf6#
- 2.Sf4#
- 2.Qe4#
- 2.e4#
- 1...Bxa4!
- threat
- 1.Qa5+?
- 1...Kc4
- 2.Se3#
- 1...Sb5+
- 2.Qxb5#
- 1...Kxc6!
- 1...Kc4
- 1.S4e5?
- Keys
- 1.Rc8!
- threat
- 2.Se3#
- 2.Sf6#
- 2.Sf4#
- 2.e4#
- 1...Sb5+
- 2.Qxb5#
- 1...Qxg8
- 2.Sf4#
- 1...Rxe2
- 2.Sf6#
- 2.Sf4#
- 1...Rxc8
- 2.Se7#
- 1...Rxg8
- 2.Sf4#
- 1...Sxf3
- 2.Sf6#
- 1...Sxg6
- 2.e4#
- 1...Sxc8
- 2.Qb5#
- 1...dxe2
- 2.Se3#
- 2.Sf6#
- 2.Sf4#
- 1...hxg4
- 2.e4#
- 1...bxa6
- 2.Se3#
- 1...Qf7
- 2.Sf4#
- 1...Rf8
- 2.Se3#
- 2.Se7#
- 2.e4#
- 1...Sg2
- 2.Sf6#
- 2.e4#
- 1...Sf5
- 2.Sf6#
- 2.Sf4#
- 2.e4#
- threat
- 1.Rc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 3
- Sets
- R(k);N_GUARD::S(H),XR(k)
- R(k);N_GUARD,N_SPINP(g),XR(I)::S(H)
- R(k);N_GUARD::S(H)
- S(i);CHECK,N_GUARD::QAR2(E),XS(i)
- S(i);N_GUARD::QAR2(E)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(i);CHECK,N_GUARD::QAR2(E),XS(i)
- Q(h);N_SPINQ(h),XB(J)::QAB1(E)
- R(b);XP(A)::QAB1(E)
- S(d);XP(C)::QAB1(E)
- P(c);XP(A)::QAB1(E)
- P(j);XQ(E)::P(A)
- Q(h);::QAB1(E)
- B(a);::P(A)
- Refutation
- S(d);XS(H)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(i);CHECK,N_GUARD::QAR2(E),XS(i)
- Q(h);N_SPINQ(h),XB(J)::QAB1(E)
- R(b);XP(A)::QAB1(E)
- S(d);XP(C)::QAB1(E)
- P(c);XP(A)::QAB1(E)
- P(j);XQ(E)::P(A)
- Q(h);::QAB1(E)
- B(a);::P(A)
- Refutation
- P(f);XS(D)
- Try
- Q(E);
- Threat
- DUALS(5)
- Vars
- S(i);CHECK,N_GUARD::QAR2(E),XS(i)
- Q(h);N_SPINQ(h),XB(J)::S(H)
- R(k);N_SPINQ(h),XB(J)::S(H)
- Q(h);::S(H)
- Refutation
- B(a);XQ(E)
- Try
- Q(E);CHECK
- Vars
- K(e);N_SPINP(g),S_FLIGHT::S(D)
- S(i);CHECK,N_GUARD,P_SPINS(i)::QAR2(E),XS(i)
- Refutation
- K(e);N_SPINP(g),N_SPINQ(h),S_FLIGHT,XP(G)
- Try
- Actual
- R(I);N_PINP(g)
- Threat
- DUALS(4)
- Vars
- S(i);CHECK,N_GUARD::QAR2(E),XS(i)
- Q(h);N_SPINQ(h),XB(J)::S(H)
- R(k);N_GUARD,XR(I)::S(H)
- R(k);N_SPINQ(h),XB(J)::S(H)
- S(d);XP(C)::S(D)
- S(d);XS(H)::P(A)
- S(i);N_GUARD,XR(I)::QAR2(E)
- P(f);XS(D)::P(A)
- P(j);XQ(E)::S(D)
- Q(h);::S(H)
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).