MESON Chess Problem Database
Problem Display
PID: 66300 (4Q3/8/6N1/3R4/4n2p/K3kn1N/R7/7B w - - 0 1)
Loustau, Jean-Marc
5th Prize, Phenix, 1989
#2
7 + 4
SOLUTION
- SOUND
- Sets
- 1...Se1
- 2.Qxe4#
- 1...Sg1
- 2.Qxe4#
- 1...Sh2
- 2.Qxe4#
- 1...Sd4
- 2.Qxe4#
- 1...Se1
- Tries
- 1.Sg1?
- threat
- 2.Re2#
- 1...Sxg1
- 2.Qxe4#
- 1...Sd4
- 2.Qxe4#
- 1...Sd2!
- threat
- 1.Sf2?
- threat
- 2.Sd1#
- 2.Sg4#
- 2.Rd3#
- 2.Qxe4#
- 1...Se5
- 2.Sd1#
- 1...Se1
- 2.Sd1#
- 2.Sg4#
- 2.Qxe4#
- 1...Sh2
- 2.Sd1#
- 2.Rd3#
- 2.Qxe4#
- 1...Sd4
- 2.Qxe4#
- 1...Sg5
- 2.Sd1#
- 2.Sg4#
- 2.Rd3#
- 1...Sd2!
- threat
- 1.Shf4?
- threat
- 2.Sg2#
- 2.Re2#
- 2.Rd3#
- 1...Se5
- 2.Re2#
- 1...Se1
- 2.Re2#
- 2.Qxe4#
- 1...Sg1
- 2.Rd3#
- 2.Qxe4#
- 1...Sh2
- 2.Re2#
- 2.Rd3#
- 2.Qxe4#
- 1...Sd4
- 2.Qxe4#
- 1...Sg5
- 2.Re2#
- 2.Rd3#
- 1...h3
- 2.Re2#
- 2.Rd3#
- 1...Sd2!
- threat
- 1.Sxh4?
- threat
- 2.Sg2#
- 2.Sf5#
- 1...Sxh4
- 2.Qxe4#
- 1...Sd4
- 2.Qxe4#
- 1...Se5
- 2.Sf5#
- 1...Se1
- 2.Sf5#
- 2.Qxe4#
- 1...Sg1
- 2.Sf5#
- 2.Qxe4#
- 1...Sh2
- 2.Sf5#
- 2.Qxe4#
- 1...Sg5
- 2.Sf5#
- 1...Sd2!
- threat
- 1.Ra1?
- 1...Ke2
- 2.Qxe4#
- 1...Se5
- 2.Re1#
- 1...Se1
- 2.Rxe1#
- 2.Qxe4#
- 1...Sg1
- 2.Qxe4#
- 1...Sd2
- 2.Re1#
- 1...Sh2
- 2.Re1#
- 2.Qxe4#
- 1...Sg5
- 2.Re1#
- 1...Sd4!
- 1...Ke2
- 1.Qb5?
- threat
- 2.Re2#
- 2.Rd3#
- 2.Qe2#
- 2.Qd3#
- 1...Sed2
- 2.Qd3#
- 1...Sf2
- 2.Re2#
- 2.Qe2#
- 1...Sc3
- 2.Qd3#
- 1...Sg3
- 2.Qd3#
- 1...Sc5
- 2.Re2#
- 2.Qe2#
- 1...Seg5
- 2.Re2#
- 2.Qe2#
- 2.Qd3#
- 1...Sd6
- 2.Re2#
- 2.Qe2#
- 2.Qd3#
- 1...Sf6
- 2.Re2#
- 2.Qe2#
- 2.Qd3#
- 1...Se5
- 2.Re2#
- 2.Qe2#
- 1...Se1
- 2.Re2#
- 2.Qe2#
- 1...Sg1
- 2.Rd3#
- 2.Qd3#
- 1...Sfd2
- 2.Qd3#
- 1...Sd4!
- threat
- 1.Sg1?
- Keys
- 1.Sgf4!
- threat
- 2.Sg2#
- 2.Re2#
- 2.Rd3#
- 1...Se5
- 2.Re2#
- 1...Se1
- 2.Re2#
- 2.Qxe4#
- 1...Sg1
- 2.Rd3#
- 2.Qxe4#
- 1...Sd2
- 2.Rd3#
- 1...Sh2
- 2.Re2#
- 2.Rd3#
- 2.Qxe4#
- 1...Sd4
- 2.Qxe4#
- 1...Sg5
- 2.Re2#
- 2.Rd3#
- threat
- 1.Sgf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- S(b);::QAR1(G),XS(c)
- Tries
- Try
- S(D);
- Threat
- R1(B)
- Vars
- S(b);XS(D)::QAR1(G),XS(c)
- S(b);::QAR1(G),XS(c)
- Refutation
- S(b);
- Try
- S(D);
- Threat
- DUALS(4)
- Vars
- S(b);N_SPINS(c)::S(D)
- S(b);::QAR1(G),XS(c)
- Refutation
- S(b);
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- S(b);N_SPINS(c)::R1(B)
- S(b);::QAR1(G),XS(c)
- Refutation
- S(b);
- Try
- S(F);XP(d)
- Threat
- DUALS(2)
- Vars
- S(b);XS(F)::QAR1(G),XS(c)
- S(b);::QAR1(G),XS(c)
- S(b);N_SPINS(c)::S(F)
- S(b);::S(F)
- Refutation
- S(b);
- Try
- R(B);
- Vars
- K(a);P-FLIGHT::QAR2(G),XS(c)
- S(b);N_GUARD,N_SPINS(c)::R(B)
- S(b);::QAR1(G),XS(c)
- S(b);N_GUARD::R(B)
- Refutation
- S(b);
- Try
- Q(G);N_PINS(c)
- Threat
- DUALS(4)
- Vars
- S(c);::QAR1(G)
- S(b);::QAR1(G)
- Refutation
- S(b);
- Try
- Actual
- S(F);
- Threat
- DUALS(3)
- Vars
- S(b);N_SPINS(c)::R1(B)
- S(b);::R1(E)
- S(b);::QAR1(G),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).