MESON Chess Problem Database
Problem Display
PID: 163562 (8/2pR4/K1p1PNp1/Nnk5/b1B2p2/P6Q/1P1P1np1/1qrR4 w - - 0 1)
Segers, Marcel
Phenix, 1991
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.b4#
- 1...Qc2
- 2.b4#
- 1...Qd3
- 2.b4#
- 1...Qe4
- 2.b4#
- 1...Qf5
- 2.b4#
- 1...Qa1
- 2.b4#
- 1...Rxc4
- 2.Sb7#
- 1...Sd3
- 2.Se4#
- 1...Sxa3
- 2.Qxa3#
- 1...Sc3
- 2.d4#
- 1...Sd6
- 2.d4#
- 1...Sa7
- 2.d4#
- 1...Qa2
- Tries
- 1.Se4+?
- 1...Qxe4
- 2.b4#
- 1...Sxe4!
- 1...Qxe4
- 1.Ba2?
- threat
- 2.Sb7#
- 1...Qxa2
- 2.b4#
- 1...Sxa3
- 2.Qxa3#
- 1...Sd6
- 2.d4#
- 1...Bb3!
- threat
- 1.Bxb5?
- threat
- 2.Sb7#
- 2.d4#
- 1...Qxb2
- 2.Sb7#
- 1...Rxd1
- 2.Sb7#
- 2.Qc3#
- 1...cxb5
- 2.Rd5#
- 2.d4#
- 1...Qd3
- 2.Sb7#
- 2.b4#
- 1...Qe4
- 2.Sb7#
- 1...Rc4
- 2.Sb7#
- 1...Sd3
- 2.Sb7#
- 2.Se4#
- 1...Bxb5+!
- threat
- 1.Qf5+?
- 1...Qxf5
- 2.b4#
- 1...gxf5!
- 1...Qxf5
- 1.Qb3?
- threat
- 2.Sb7#
- 2.Qb4#
- 1...Qxb2
- 2.Sb7#
- 1...Rxc4
- 2.Sb7#
- 2.Qxc4#
- 1...Sxa3
- 2.Sb7#
- 2.Qxa3#
- 2.d4#
- 1...Sd6
- 2.d4#
- 1...Sd3
- 2.Sb7#
- 2.Se4#
- 1...Bxb3!
- threat
- 1.Qc3?
- threat
- 2.Sb7#
- 2.Qb4#
- 2.Qe5#
- 1...Qxb2
- 2.Sb7#
- 1...Sxa3
- 2.Sb7#
- 2.Qxa3#
- 2.d4#
- 1...Sxc3
- 2.d4#
- 1...Qd3
- 2.Sb7#
- 2.Qb4#
- 2.b4#
- 1...Qe4
- 2.Sb7#
- 2.Qb4#
- 2.b4#
- 1...Qf5
- 2.Sb7#
- 2.Qb4#
- 2.b4#
- 1...Sd3
- 2.Sb7#
- 2.Se4#
- 1...Sg4
- 2.Sb7#
- 2.Qb4#
- 1...Sd4
- 2.Sb7#
- 2.Qb4#
- 2.Qxd4#
- 1...Sd6
- 2.Qe5#
- 2.d4#
- 1...Rxc3!
- threat
- 1.Qd3?
- threat
- 2.Sb7#
- 1...Qxd3
- 2.b4#
- 1...Sxd3
- 2.Se4#
- 1...Sxa3
- 2.Qxa3#
- 1...Sd6!
- threat
- 1.Qe3+?
- 1...Sd4
- 2.Qxd4#
- 2.Qe5#
- 1...fxe3!
- 1...Sd4
- 1.d3?
- threat
- 2.Sb7#
- 1...Qxd3
- 2.b4#
- 1...Sxd3
- 2.Se4#
- 1...Sd6
- 2.d4#
- 1...Sxa3!
- threat
- 1.Se4+?
- Keys
- 1.Be2!
- threat
- 2.Sb7#
- 1...Sxa3
- 2.Qxa3#
- 1...Sd6
- 2.d4#
- 1...Qd3
- 2.b4#
- 1...Sd3
- 2.Se4#
- threat
- 1.Be2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- Q(a);N_GUARD::P(B)
- R(b);SBLOCK,XB(F)::S(G)
- S(c);N_GUARD,S_CUTQ(a)::S(J)
- S(g);OGATE,XP(D)::QAB(E),XS(g)
- S(g);N_GUARD::P(C)
- Tries
- Try
- S(J);CHECK
- Vars
- Q(a);XS(J)::P(B)
- Refutation
- S(c);XS(J)
- Try
- B(F);
- Threat
- S(G)
- Vars
- Q(a);N_GUARD,XB(F)::P(B)
- S(g);OGATE,XP(D)::QAB(E),XS(g)
- S(g);N_GUARD::P(C)
- Refutation
- B(e);
- Try
- B(F);XS(g)
- Threat
- DUALS(2)
- Vars
- Q(a);XP(B)::S(G)
- Q(a);::S(G)
- R(b);::S(G)
- Refutation
- B(e);CHECK,XB(F)
- Try
- Q(E);CHECK
- Vars
- Q(a);XQ(E)::P(B)
- Refutation
- P(j);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(a);XP(B)::S(G)
- S(g);N_GUARD::P(C)
- Refutation
- B(e);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- Q(a);XP(B)::S(G)
- S(g);N_GUARD,XQ(E)::P(C)
- Refutation
- R(b);XQ(E)
- Try
- Q(E);
- Threat
- S(G)
- Vars
- Q(a);N_GUARD,XQ(E)::P(B)
- S(c);N_GUARD,XQ(E)::S(J)
- S(g);OGATE,XP(D)::QAB(E),XS(g)
- Refutation
- S(g);
- Try
- Q(E);CHECK
- Refutation
- P(f);XQ(E)
- Try
- P(C);
- Threat
- S(G)
- Vars
- Q(a);N_GUARD,XP(C)::P(B)
- S(c);N_GUARD,XP(C)::S(J)
- S(g);N_GUARD::P(C)
- Refutation
- S(g);XP(D)
- Try
- Actual
- B(F);
- Threat
- S(G)
- Vars
- S(g);OGATE,XP(D)::QAB(E),XS(g)
- S(g);N_GUARD::P(C)
- Q(a);N_GUARD::P(B)
- S(c);N_GUARD,S_CUTQ(a)::S(J)
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).