MESON Chess Problem Database
Problem Display
PID: 140673 (4b1QB/2R1Rn1K/3p4/3k4/8/1n1N3p/B1Nb3P/1q6 w - - 0 1)
Andrade, Barry Jack da Costa
The Problemist, 1943
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Bxb3#
- 1...Qc1
- 2.Bxb3#
- 1...Qd1
- 2.Bxb3#
- 1...Qe1
- 2.Bxb3#
- 1...Qf1
- 2.Bxb3#
- 1...Qg1
- 2.Bxb3#
- 1...Qh1
- 2.Bxb3#
- 1...Bc1
- 2.Scb4#
- 2.Sdb4#
- 1...Be1
- 2.Se3#
- 2.Sf4#
- 1...Bc3
- 2.Se3#
- 2.Sf4#
- 1...Be3
- 2.Sxe3#
- 2.Scb4#
- 2.Sdb4#
- 1...Bb4
- 2.Se3#
- 2.Scxb4#
- 2.Sdxb4#
- 2.Sf4#
- 1...Bf4
- 2.Scb4#
- 2.Sdb4#
- 2.Sxf4#
- 1...Ba5
- 2.Se3#
- 2.Sf4#
- 1...Bg5
- 2.Scb4#
- 2.Sdb4#
- 1...Bh6
- 2.Scb4#
- 2.Sdb4#
- 1...Ba4
- 2.Qxf7#
- 1...Bb5
- 2.Qxf7#
- 1...Bc6
- 2.Qxf7#
- 1...Qa1
- Tries
- 1.Bc3?
- threat
- 2.Scb4#
- 2.Sdb4#
- 1...Bxc3
- 2.Sf4#
- 1...Bc6
- 2.Qxf7#
- 1...Qxc2!
- threat
- 1.Qg1?
- threat
- 2.Qd4#
- 1...Qxa2
- 2.Qh1#
- 1...Qxg1
- 2.Bxb3#
- 1...Qa1
- 2.Bxb3#
- 1...Qb2
- 2.Qh1#
- 1...Bc3
- 2.Se3#
- 2.Sf4#
- 1...Be3
- 2.Sxe3#
- 2.Scb4#
- 2.Sdb4#
- 1...Sg5+!
- threat
- 1.Qg4?
- threat
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Qxa2
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Qxc2
- 2.Qf3#
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...Qa1
- 2.Bxb3#
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Qd1
- 2.Bxb3#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Qe1
- 2.Bxb3#
- 2.Qc4#
- 2.Qd4#
- 1...Qf1
- 2.Bxb3#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Qg1
- 2.Bxb3#
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Qh1
- 2.Bxb3#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 1...Qb2
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Bc3
- 2.Se3#
- 2.Sf4#
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Be3
- 2.Sxe3#
- 2.Scb4#
- 2.Sdb4#
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qe4#
- 1...Bf4
- 2.Scb4#
- 2.Sdb4#
- 2.Sxf4#
- 2.Qf3#
- 2.Qe6#
- 1...Bb5
- 2.Qf3#
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...Bc6
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...Bd7
- 2.Qf3#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Se5
- 2.Qd4#
- 1...Sd8
- 2.Qf3#
- 2.Qf5#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Sg5+!
- threat
- 1.Bc3?
- Keys
- 1.Rxe8!
- threat
- 2.Qxf7#
- 1...Qe1
- 2.Bxb3#
- 1...Qf1
- 2.Bxb3#
- threat
- 1.Rxe8!
There are these versions: 219184
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- Q(a);N_GUARD::B(A),XS(c)
- B(h);N_GUARD::QAB(H),XS(g)
- Tries
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD,XB(I)::S(D)
- B(h);N_GUARD::QAB(H),XS(g)
- Refutation
- Q(a);P_PINS(D),XS(B)
- Try
- Q(H);
- Threat
- QAR1(H)
- Vars
- Q(a);N_GUARD,N_SPINS(c),XB(A)::QAB(H)
- Q(a);N_GUARD,XQ(H)::B(A),XS(c)
- Q(a);N_GUARD::B(A),XS(c)
- Q(a);N_GUARD::QAB(H)
- Refutation
- S(g);CHECK
- Try
- Q(H);
- Threat
- DUALS(5)
- Vars
- S(g);::QAR1(H)
- Refutation
- S(g);CHECK
- Try
- Actual
- R(F);XB(h)
- Threat
- QAB(H),XS(g)
- Vars
- Q(a);N_GUARD::B(A),XS(c)
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).