MESON Chess Problem Database
Problem Display
PID: 33329 (q1rN1bb1/2pQ4/1p1p1p2/1pPkB2n/3N1p2/pPR2P2/8/2K1R3 w - - 0 1)
Zidek, Alexander
Schach, 1987
#2
10 + 13
SOLUTION
- SOUND
- Sets
- 1...Qc6
- 2.Qxc6#
- 1...Qa4
- 2.Qc6#
- 1...Qa5
- 2.Qc6#
- 1...Qa6
- 2.Qc6#
- 1...Qa7
- 2.Qc6#
- 1...Qb8
- 2.Qc6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Qxf7#
- 1...Bh7
- 2.Qe6#
- 2.Qf7#
- 1...Qc6
- Tries
- 1.S4c6?
- threat
- 2.Sb4#
- 2.Rd1#
- 1...Qxc6
- 2.Qxc6#
- 1...bxc5
- 2.Rd1#
- 2.Rd3#
- 1...fxe5
- 2.Rd1#
- 2.Rxe5#
- 1...Qa5
- 2.Rd1#
- 1...Bh7
- 2.Sb4#
- 2.Qe6#
- 2.Qf7#
- 1...b4
- 2.Sxb4#
- 2.Rd1#
- 1...Qa4!
- threat
- 1.S4e6?
- threat
- 2.Rd3#
- 1...Bxe6
- 2.Qxe6#
- 1...Qa4
- 2.Qc6#
- 1...Bh7!
- threat
- 1.Rd1?
- threat
- 2.S4c6#
- 1...Kxe5
- 2.Qf5#
- 1...Qc6
- 2.S4xc6#
- 1...Bh7
- 2.Qe6#
- 1...c6
- 2.S4xc6#
- 1...Qa4!
- threat
- 1.Rd3?
- threat
- 2.S4e6#
- 1...Kxc5
- 2.Qxb5#
- 1...Qa4
- 2.Qc6#
- 1...Be6
- 2.S4xe6#
- 1...Bh7!
- threat
- 1.Qxb5?
- threat
- 2.Qc4#
- 2.c6#
- 1...bxc5
- 2.Qc4#
- 1...dxc5
- 2.Qc4#
- 1...dxe5
- 2.Qc4#
- 1...fxe5
- 2.Qc4#
- 1...Qc6
- 2.Qc4#
- 2.Qxc6#
- 1...Qa5
- 2.Qc4#
- 2.Qc6#
- 1...Qa6
- 2.Qc6#
- 1...c6
- 2.Qc4#
- 1...Qa4!
- threat
- 1.Qf5?
- threat
- 2.Bxf6#
- 2.Qe4#
- 1...dxc5
- 2.Qe4#
- 1...dxe5
- 2.Qe4#
- 1...fxe5
- 2.Qe4#
- 1...Be6
- 2.Qe4#
- 2.Qxe6#
- 1...Bh7
- 2.Qe6#
- 1...Sg7
- 2.Qe4#
- 1...Sg3!
- threat
- 1.Qh7?
- threat
- 2.Qe4#
- 2.Qxg8#
- 1...dxe5
- 2.Qe4#
- 1...fxe5
- 2.Qe4#
- 1...Be6
- 2.Qe4#
- 1...Bf7
- 2.Qe4#
- 2.Qxf7#
- 1...Sg3
- 2.Qxg8#
- 1...Sg7
- 2.Qe4#
- 1...f5
- 2.Qxg8#
- 1...Bxh7!
- threat
- 1.S4c6?
- Keys
- 1.Sc2!
- threat
- 2.Sb4#
- 1...bxc5
- 2.Rd3#
- 1...fxe5
- 2.Rd1#
- 1...Qa4
- 2.Qc6#
- 1...Qa5
- 2.Qc6#
- 1...b4
- 2.Sxb4#
- threat
- 1.Sc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(j);N_GUARD::QAB1(I),XQ(j)
- Q(j);N_GUARD::QAB1(I)
- B(m);N_GUARD::QAB1(I),XB(m)
- B(m);N_GUARD::QAB(I),XB(m)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(j);OGATE,XS(F)::QAB1(I),XQ(j)
- Q(j);::R(B)
- Refutation
- Q(j);
- Try
- S(F);
- Threat
- R(D)
- Vars
- B(m);OGATE,XS(F)::QAB1(I),XB(m)
- Q(j);N_GUARD::QAB1(I)
- Refutation
- B(m);
- Try
- R(B);
- Threat
- R(B)+S(F)
- Vars
- K(d);N_SPINP(g),OGATEB,P-FLIGHT,XB(H)::QAR1(I)
- Q(j);::R(B)+S(F),XQ(j)
- B(m);N_GUARD::QAB1(I)
- P(i);::R(B)+S(F),XP(i)
- Refutation
- Q(j);
- Try
- R(D);
- Threat
- R(D)+S(F)
- Vars
- K(d);N_SPINP(g),OGATEB,P-FLIGHT,XP(G)::QAR1(I),XP(c)
- Q(j);N_GUARD::QAB1(I)
- B(m);::R(D)+S(F),XB(m)
- Refutation
- B(m);
- Try
- Q(I);N_PINP(g),XP(c)
- Threat
- DUALS(2)
- Vars
- P(f);P_SPINP(f),XP(G)::QAB1(I)
- P(g);P_SPINP(g),XP(G)::QAB1(I)
- P(g);XB(H)::QAB1(I)
- P(h);XB(H)::QAB1(I)
- Q(j);N_GUARD::QAB1(I)
- P(i);::QAB1(I)
- Refutation
- Q(j);
- Try
- Q(I);N_PINP(g)
- Threat
- DUALS(2)
- Vars
- P(g);XP(G)::QAB1(I)
- P(g);P_SPINP(g),XB(H)::QAB1(I)
- P(h);P_SPINP(h),XB(H)::QAB1(I)
- B(m);N_GUARD::QAB1(I)
- S(e);::QAB1(I)
- Refutation
- S(e);
- Try
- Q(I);N_PINP(g)
- Threat
- DUALS(2)
- Vars
- P(g);XB(H)::QAB1(I)
- P(h);XB(H)::QAB1(I)
- B(m);::QAB1(I)
- S(e);::QAB(I),XB(m)
- S(e);::QAB1(I)
- P(h);::QAB(I),XB(m)
- Refutation
- B(m);XQ(I)
- Try
- Actual
- S(F);
- Threat
- S(F)
- Vars
- P(f);SBLOCK,XP(G)::R(D)
- P(h);SBLOCK,XB(H)::R(B)
- Q(j);N_GUARD::QAB1(I)
- P(c);::S(F),XP(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).