MESON Chess Problem Database
Problem Display
PID: 51388 (2Bn4/5pr1/RN3k1P/2Q1N3/7n/2p5/2P1p2q/1KB1b1Rb w - - 0 1)
Andrade, Barry Jack da Costa
Manchester Guardian, 1959
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Sd5#
- 1...Rg5
- 2.Bxg5#
- 1...Rh7
- 2.Bg5#
- 1...Sf5
- 2.Sbd7#
- 1...Sg6
- 2.Sg4#
- 2.Bg5#
- 1...Sc6
- 2.Qd6#
- 1...Se6
- 2.Sed7#
- 1...Qxe5
- Tries
- 1.Sf3?
- threat
- 2.Sd5#
- 2.Sd7#
- 1...Bxf3
- 2.Sd7#
- 1...Sxf3
- 2.Sd7#
- 1...Qd6
- 2.Sd5#
- 1...Qe5
- 2.Sd5#
- 2.Qxe5#
- 1...Sc6
- 2.Sd5#
- 1...Se6
- 2.Sd7#
- 1...Qb8!
- threat
- 1.Sg4+?
- 1...Rxg4
- 2.Sd7#
- 1...Kg6!
- 1...Rxg4
- 1.Sg6?
- threat
- 2.Sd5#
- 2.Sd7#
- 2.Qe7#
- 2.Qg5#
- 1...Qxg1
- 2.Sd5#
- 2.Sd7#
- 1...Rxg6
- 2.Sd7#
- 1...Sxg6
- 2.Sd7#
- 2.Bg5#
- 2.Qg5#
- 1...Qg3
- 2.Sd5#
- 2.Sd7#
- 1...Qg2
- 2.Sd5#
- 2.Sd7#
- 1...Bg3
- 2.Sd5#
- 2.Sd7#
- 2.Qg5#
- 1...Bg2
- 2.Sd5#
- 2.Sd7#
- 2.Qg5#
- 1...Sg2
- 2.Sd5#
- 2.Sd7#
- 2.Qf5#
- 2.Qg5#
- 1...Qb8
- 2.Qe7#
- 2.Qg5#
- 1...Qf4
- 2.Sd5#
- 2.Sd7#
- 2.Qe7#
- 1...Qe5
- 2.Sd5#
- 2.Qxe5#
- 1...Qd6
- 2.Qg5#
- 1...Qc7
- 2.Sd5#
- 2.Sd7#
- 2.Qg5#
- 1...Bd2
- 2.Sd5#
- 2.Sd7#
- 2.Qe7#
- 1...Bd5
- 2.Sxd5#
- 2.Qe7#
- 1...Bc6
- 2.Sd5#
- 2.Qe7#
- 2.Qg5#
- 1...Sf3
- 2.Sd5#
- 2.Sd7#
- 2.Qe7#
- 2.Qf5#
- 1...Sf5
- 2.Sd5#
- 2.Sd7#
- 2.Qxf5#
- 1...Sc6
- 2.Qg5#
- 1...Se6
- 2.Sd7#
- 1...fxg6!
- threat
- 1.Sa4+?
- 1...Sc6
- 2.Qd6#
- 1...Se6
- 2.Sd7#
- 1...Bc6!
- 1...Sc6
- 1.Sbc4+?
- 1...Sc6
- 2.Qd6#
- 1...Se6
- 2.Sd7#
- 1...Bc6!
- 1...Sc6
- 1.Sa8+?
- 1...Sc6
- 2.Qd6#
- 1...Se6
- 2.Sd7#
- 1...Bc6!
- 1...Sc6
- 1.Bf4?
- threat
- 2.Sd5#
- 1...Se6
- 2.Sed7#
- 1...Bd5
- 2.Sxd5#
- 1...Sc6
- 2.Qd6#
- 1...Qxf4!
- threat
- 1.Qc7?
- threat
- 2.Sd5#
- 1...Bd5
- 2.Sxd5#
- 1...Sc6
- 2.Qd6#
- 1...Se6!
- threat
- 1.Sf3?
- Keys
- 1.Ba3!
- threat
- 2.Qe7#
- 1...Qxe5
- 2.Sd5#
- 1...Se6
- 2.Sed7#
- 1...Sf5
- 2.Sbd7#
- 1...Sg6
- 2.Sg4#
- 1...Sc6
- 2.Qd6#
- threat
- 1.Ba3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(d);SBLOCK,XS(F)::R(G)+S(H),DCHECK
- R(i);N_GUARD::B(B),XR(i)
- R(i);N_GUARD::B(B)
- S(f);SBLOCK::R(G)+S(H),DCHECK
- S(j);N_GUARD::QAR2(E)
- S(j);SBLOCK::S(F)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(b);XS(F)::R(G)+S(H),DCHECK
- S(f);XS(F)::R(G)+S(H),DCHECK
- Q(d);::S(H)
- S(j);::S(H)
- Refutation
- Q(d);P_PINS(H)
- Try
- S(F);CHECK
- Vars
- R(i);XS(F)::R(G)+S(H),DCHECK
- Refutation
- K(g);P-FLIGHT
- Try
- S(F);
- Threat
- DUALS(4)
- Vars
- R(i);XS(F)::R(G)+S(H),DCHECK
- Q(d);::QAB1(E)
- S(j);::QAB1(E)
- S(j);::S(H)
- Refutation
- P(h);XS(F)
- Try
- S(H);CHECK
- Vars
- S(j);N_GUARD,P_SPINS(j)::QAR2(E)
- S(j);P_SPINS(j)::S(F)
- Refutation
- B(b);P_SPINB(b)
- Try
- S(H);CHECK
- Vars
- S(j);N_GUARD,P_SPINS(j)::QAR2(E)
- S(j);P_SPINS(j)::S(F)
- Refutation
- B(b);P_SPINB(b)
- Try
- S(H);CHECK
- Vars
- S(j);N_GUARD,P_SPINS(j)::QAR2(E)
- S(j);P_SPINS(j)::S(F)
- Refutation
- B(b);P_SPINB(b)
- Try
- B(B);
- Threat
- R(G)+S(H),DCHECK
- Vars
- S(j);SBLOCK::S(F)
- B(b);::R(G)+S(H),DCHECK,XB(b)
- S(j);N_GUARD::QAR2(E)
- Refutation
- Q(d);XB(B)
- Try
- Q(E);
- Threat
- R(G)+S(H),DCHECK
- Vars
- B(b);::R(G)+S(H),DCHECK,XB(b)
- S(j);N_GUARD::QAR2(E)
- Refutation
- S(j);
- Try
- Actual
- B(B);
- Threat
- QAB1(E)
- Vars
- Q(d);SBLOCK,XS(F)::R(G)+S(H),DCHECK
- S(j);SBLOCK::S(F)
- S(f);SBLOCK::R(G)+S(H),DCHECK
- S(f);SBLOCK,S_CUTR(i)::S(F)
- S(j);N_GUARD::QAR2(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).