MESON Chess Problem Database
Problem Display
PID: 262491 (b1R5/5Nq1/R7/K7/Q4Bpp/2p2k2/3P4/5B1N w - - 0 1)
Doukhan, Gerard
Europe Echecs, 1974
#2
9 + 6
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qe5+
- 2.Sxe5#
- 1...Qh6
- 2.Se5#
- 2.Rxc3#
- 1...Qf8
- 2.Se5#
- 2.Sg5#
- 2.Rxc3#
- 1...Qh8
- 2.Sg5#
- 1...Qg5+
- 2.Sxg5#
- 1...Qg6
- 2.Se5#
- 1...Qxf7
- 2.Rxc3#
- 1...Qh7
- 2.Se5#
- 2.Sg5#
- 1...Qg8
- 2.Se5#
- 2.Rxc3#
- 1...Qe5+
- Tries
- 1.Bh2?
- threat
- 2.Qf4#
- 1...Qe5+
- 2.Sxe5#
- 1...Qg5+
- 2.Sxg5#
- 1...Qxf7
- 2.Rxc3#
- 1...Qd4
- 2.Sg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qh6
- 2.Se5#
- 1...Be4
- 2.Qd1#
- 1...g3!
- threat
- 1.Be3?
- threat
- 2.Qf4#
- 1...Qe5+
- 2.Sxe5#
- 1...Qg5+
- 2.Sxg5#
- 1...Qd4
- 2.Sg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qh6
- 2.Se5#
- 1...Be4
- 2.Qd1#
- 1...Qxf7!
- threat
- 1.Bg3?
- threat
- 2.Qf4#
- 1...Qe5+
- 2.Sxe5#
- 1...Qg5+
- 2.Sxg5#
- 1...Qxf7
- 2.Rxc3#
- 1...Qd4
- 2.Sg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qh6
- 2.Se5#
- 1...Be4
- 2.Qd1#
- 1...hxg3!
- threat
- 1.Be5?
- threat
- 2.Rxc3#
- 2.Qf4#
- 1...Qxe5+
- 2.Sxe5#
- 1...Qxf7
- 2.Rxc3#
- 1...cxd2
- 2.Rc3#
- 2.Qf4#
- 1...Qf6
- 2.Rxf6#
- 2.Rxc3#
- 1...Qg5
- 2.Sxg5#
- 1...Qg6
- 2.Qf4#
- 1...Qh7
- 2.Sg5#
- 2.Qf4#
- 1...Be4
- 2.Qd1#
- 1...Bc6
- 2.Qxc6#
- 2.Qf4#
- 1...c2
- 2.Rc3#
- 2.Qf4#
- 1...Qh6!
- threat
- 1.Bg5?
- threat
- 2.Qf4#
- 1...Qe5+
- 2.Sxe5#
- 1...Qxg5+
- 2.Sxg5#
- 1...Qxf7
- 2.Rxc3#
- 1...Qf6
- 2.Rxf6#
- 1...Be4
- 2.Qd1#
- 1...Qd4!
- threat
- 1.Bd6?
- threat
- 2.Qf4#
- 1...Qe5+
- 2.Sxe5#
- 1...Qg5+
- 2.Sxg5#
- 1...Qxf7
- 2.Rxc3#
- 1...Qd4
- 2.Sg5#
- 1...Qh6
- 2.Se5#
- 1...Be4
- 2.Qd1#
- 1...Qf6!
- threat
- 1.Bh6?
- threat
- 2.Qf4#
- 1...Qe5+
- 2.Sxe5#
- 1...Qg5+
- 2.Sxg5#
- 1...Qxh6
- 2.Se5#
- 1...Qxf7
- 2.Rxc3#
- 1...Qf6
- 2.Rxf6#
- 1...Be4
- 2.Qd1#
- 1...Qd4!
- threat
- 1.Bc7?
- threat
- 2.Qf4#
- 1...Qe5+
- 2.Sxe5#
- 1...Qg5+
- 2.Sxg5#
- 1...Qd4
- 2.Sg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qh6
- 2.Se5#
- 1...Be4
- 2.Qd1#
- 1...Qxf7!
- threat
- 1.Rf6?
- threat
- 2.Se5#
- 2.Rxc3#
- 1...Qg5+
- 2.Sxg5#
- 2.Bxg5#
- 1...Qxf7
- 2.Rxc3#
- 1...cxd2
- 2.Se5#
- 2.Rc3#
- 1...g3
- 2.Se5#
- 1...Qg6
- 2.Se5#
- 1...Qh7
- 2.Se5#
- 2.Sg5#
- 1...Be4
- 2.Se5#
- 2.Qd1#
- 1...Bc6
- 2.Se5#
- 2.Qxc6#
- 1...c2
- 2.Se5#
- 2.Rc3#
- 1...Qxf6!
- threat
- 1.Bh2?
- Keys
- 1.Bb8!
- threat
- 2.Qf4#
- 1...Qe5+
- 2.Sxe5#
- 1...Qg5+
- 2.Sxg5#
- 1...Qxf7
- 2.Rxc3#
- 1...Qd4
- 2.Sg5#
- 1...Qf6
- 2.Rxf6#
- 1...Qh6
- 2.Se5#
- 1...Be4
- 2.Qd1#
- threat
- 1.Bb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(e);CHECK,N_GUARD::S(H),XQ(e)
- Q(e);N_GUARD::S(H)
- Q(e);N_GUARD,XS(H)::R(I),XP(a)
- Tries
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- Q(e);CHECK,N_GUARD::S(H),XQ(e)
- Q(e);N_GUARD,XS(H)::R(I),XP(a)
- Q(e);N_GUARD::S(H)
- Q(e);N_GUARD::R(G),XQ(e)
- B(f);SBLOCK::QAB(D)
- Refutation
- P(c);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- Q(e);CHECK,N_GUARD::S(H),XQ(e)
- Q(e);N_GUARD::S(H)
- Q(e);N_GUARD::R(G),XQ(e)
- B(f);SBLOCK::QAB(D)
- Refutation
- Q(e);XS(H)
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- Q(e);CHECK,N_GUARD::S(H),XQ(e)
- Q(e);N_GUARD,XS(H)::R(I),XP(a)
- Q(e);N_GUARD::S(H)
- Q(e);N_GUARD::R(G),XQ(e)
- B(f);SBLOCK::QAB(D)
- Refutation
- P(d);XB(E)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,XB(E)::S(H),XQ(e)
- Q(e);XS(H)::R(I),XP(a)
- Q(e);N_GUARD,P_PINB(E)::S(H),XQ(e)
- Q(e);::QAR1(D)
- B(f);SBLOCK::QAB(D)
- Refutation
- Q(e);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- Q(e);CHECK,N_GUARD::S(H),XQ(e)
- Q(e);CHECK,XB(E)::S(H),XQ(e)
- Q(e);N_GUARD,XS(H)::R(I),XP(a)
- Q(e);N_GUARD::R(G),XQ(e)
- B(f);SBLOCK::QAB(D)
- Refutation
- Q(e);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- Q(e);CHECK,N_GUARD::S(H),XQ(e)
- Q(e);N_GUARD,XS(H)::R(I),XP(a)
- Q(e);N_GUARD::S(H)
- B(f);SBLOCK::QAB(D)
- Refutation
- Q(e);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- Q(e);CHECK,N_GUARD::S(H),XQ(e)
- Q(e);N_GUARD,XB(E)::S(H)
- Q(e);N_GUARD,XS(H)::R(I),XP(a)
- Q(e);N_GUARD::R(G),XQ(e)
- B(f);SBLOCK::QAB(D)
- Refutation
- Q(e);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- Q(e);CHECK,N_GUARD::S(H),XQ(e)
- Q(e);N_GUARD::S(H)
- Q(e);N_GUARD::R(G),XQ(e)
- B(f);SBLOCK::QAB(D)
- Refutation
- Q(e);XS(H)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- Q(e);XS(H)::R(I),XP(a)
- P(c);::S(H)
- Q(e);::S(H)
- Refutation
- Q(e);XR(G)
- Try
- Actual
- B(E);
- Threat
- QAR1(D)
- Vars
- Q(e);CHECK,N_GUARD::S(H),XQ(e)
- Q(e);N_GUARD,XS(H)::R(I),XP(a)
- Q(e);N_GUARD::S(H)
- Q(e);N_GUARD::R(G),XQ(e)
- B(f);SBLOCK::QAB(D)
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).