MESON Chess Problem Database
Problem Display
PID: 62677 (8/1q3n2/1n6/4p1b1/2k1N3/1R1R1N2/8/5QBK w - - 0 1)
Andrade, Barry Jack da Costa
Chess, 1944
#2
7 + 6
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Rdc3#
- 1...Bc1
- 2.Qxc1#
- 1...Bd2
- 2.Sfxd2#
- 2.Sexd2#
- 1...Bh4
- 2.Sfd2#
- 2.Sed2#
- 2.Qc1#
- 1...Bf6
- 2.Sfd2#
- 2.Sed2#
- 2.Qc1#
- 1...Be7
- 2.Sfd2#
- 2.Sed2#
- 2.Qc1#
- 1...Bd8
- 2.Sfd2#
- 2.Sed2#
- 2.Qc1#
- 1...Sd5
- 2.Rdc3#
- 2.Re3#
- 1...Sd6
- 2.Sxe5#
- 2.Sxd6#
- 1...Sh6
- 2.Sxe5#
- 2.Sd6#
- 1...Sd8
- 2.Sxe5#
- 2.Sd6#
- 1...Sh8
- 2.Sxe5#
- 2.Sd6#
- 1...Qd5
- Tries
- 1.Be3?
- threat
- 2.Sfd2#
- 2.Sed2#
- 2.Qc1#
- 1...Qxe4
- 2.Qc1#
- 1...Sa4
- 2.Sfd2#
- 2.Sed2#
- 1...Sd5
- 2.Sfd2#
- 2.Sed2#
- 2.Rdc3#
- 1...Bxe3!
- threat
- 1.Rb1?
- threat
- 2.Rdd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Qd5
- 2.Rc3#
- 2.Rd4#
- 1...Qd7
- 2.Rd4#
- 2.Rd6#
- 2.Rxd7#
- 1...Bd2
- 2.Sfxd2#
- 2.Sexd2#
- 2.Rxd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Bd8
- 2.Sfd2#
- 2.Sed2#
- 2.Rdd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rxd8#
- 1...Sd5
- 2.Rdd1#
- 2.Rd2#
- 2.Ra3#
- 2.Rdb3#
- 2.Rc3#
- 2.Re3#
- 2.Rd4#
- 1...Sd7
- 2.Rdd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rxd7#
- 1...Sd6
- 2.Sxe5#
- 2.Sxd6#
- 2.Rdd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rxd6#
- 1...Sd8
- 2.Sxe5#
- 2.Sd6#
- 2.Rdd1#
- 2.Rd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rxd8#
- 1...Qxe4!
- threat
- 1.Rb2?
- threat
- 2.Rd1#
- 2.Rdd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Qd5
- 2.Rc3#
- 2.Rd4#
- 1...Qd7
- 2.Rd4#
- 2.Rd6#
- 2.Rxd7#
- 1...Bd2
- 2.Sfxd2#
- 2.Sexd2#
- 2.Rdxd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Bd8
- 2.Sfd2#
- 2.Sed2#
- 2.Rd1#
- 2.Rdd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rxd8#
- 1...Sd5
- 2.Rd1#
- 2.Rdd2#
- 2.Ra3#
- 2.Rdb3#
- 2.Rc3#
- 2.Re3#
- 2.Rd4#
- 1...Sd7
- 2.Rd1#
- 2.Rdd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rxd7#
- 1...Sd6
- 2.Sxe5#
- 2.Sxd6#
- 2.Rd1#
- 2.Rdd2#
- 2.Rd4#
- 2.Rxd6#
- 1...Sd8
- 2.Sxe5#
- 2.Sd6#
- 2.Rd1#
- 2.Rdd2#
- 2.Rd4#
- 2.Rd6#
- 2.Rd7#
- 2.Rxd8#
- 1...Qxe4!
- threat
- 1.Qe2?
- threat
- 2.Qc2#
- 1...Bd2
- 2.Sfxd2#
- 2.Sexd2#
- 1...Sd5
- 2.Rdc3#
- 2.Re3#
- 1...Sa4!
- threat
- 1.Qf2?
- threat
- 2.Qc5#
- 2.Qc2#
- 1...Qd5
- 2.Rdc3#
- 2.Qc2#
- 1...Qc6
- 2.Qc2#
- 1...Qc8
- 2.Qc2#
- 1...Qc7
- 2.Qc2#
- 1...Qe7
- 2.Qc2#
- 1...Bd2
- 2.Sfxd2#
- 2.Sexd2#
- 2.Qc5#
- 1...Be3
- 2.Qc2#
- 1...Be7
- 2.Sfd2#
- 2.Sed2#
- 2.Qc2#
- 1...Sd5
- 2.Qc5#
- 1...Sd7
- 2.Qc2#
- 1...Sa4!
- threat
- 1.Be3?
- Keys
- 1.Sf6!
- threat
- 2.Rdc3#
- 1...Qxf3+
- 2.Rxf3#
- 1...Bxf6
- 2.Qc1#
- threat
- 1.Sf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(e);SBLOCK::QAB(A)+R(E),DCHECK
- B(c);N_GUARD::QAR(A),XB(c)
- Tries
- Try
- B(B);
- Threat
- DUALS(3)
- Vars
- Q(e);P_PINS(F),XS(G)::QAR(A)
- Refutation
- B(c);XB(B)
- Try
- R(D);
- Threat
- DUALS(6)
- Refutation
- Q(e);P_PINS(F),XS(G)
- Try
- R(D);
- Threat
- DUALS(6)
- Refutation
- Q(e);P_PINS(F),XS(G)
- Try
- Q(A);
- Threat
- QAR2(A)
- Refutation
- S(d);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(e);::QAR2(A)
- B(c);::QAR2(A)
- S(d);::QAR1(A)
- S(d);::QAR2(A)
- Refutation
- S(d);
- Try
- Actual
- S(G);P_SPINS(F)
- Threat
- QAB(A)+R(E),DCHECK
- Vars
- Q(e);CHECK,OGATE,XS(F)::QAB(A)+R(E),XQ(e)
- B(c);N_GUARD,XS(G)::QAR(A)
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).