MESON Chess Problem Database
Problem Display
PID: 147743 (2q5/8/8/3P4/R2NpP1p/4k2n/1Pp5/K1N1BQ2 w - - 0 1)
Opdenoordt, Joseph J
Tijdschrift vd NSB, 1930
#2
9 + 6
| 35 | L'Italia Scacchistica | 1930 |
SOLUTION
- SOUND
- Sets
- 1...Qg4
- 2.Sxc2#
- 1...Qf5
- 2.Sxc2#
- 2.Sxf5#
- 1...Qa6
- 2.Sxc2#
- 2.Sf5#
- 1...Qe6
- 2.Sxc2#
- 1...Qb7
- 2.Sxc2#
- 2.Sf5#
- 1...Qd7
- 2.Sxc2#
- 1...Qc3
- 2.Sf5#
- 1...Qc4
- 2.Sf5#
- 1...Qc5
- 2.Sf5#
- 1...Qc6
- 2.Sf5#
- 1...Qc7
- 2.Sf5#
- 1...Qa8
- 2.Sxc2#
- 2.Sf5#
- 1...Qb8
- 2.Sxc2#
- 2.Sf5#
- 1...Qd8
- 2.Sxc2#
- 2.Sf5#
- 1...Qe8
- 2.Sxc2#
- 2.Sf5#
- 1...Qf8
- 2.Sxc2#
- 1...Qg8
- 2.Sxc2#
- 2.Sf5#
- 1...Qh8
- 2.Sxc2#
- 2.Sf5#
- 1...Sg1
- 2.Qf2#
- 1...Sf2
- 2.Qxf2#
- 1...Sxf4
- 2.Qg1#
- 2.Qf2#
- 1...Sg5
- 2.Qf2#
- 1...Qg4
- Tries
- 1.Ka2?
- 1...Sxf4
- 2.Qg1#
- 2.Qf2#
- 1...Sf2
- 2.Qxf2#
- 1...Qg4
- 2.Sxc2#
- 1...Qf5
- 2.Sxc2#
- 2.Sxf5#
- 1...Qa6
- 2.Sxc2#
- 2.Sf5#
- 1...Qe6
- 2.Sxc2#
- 1...Qb7
- 2.Sxc2#
- 2.Sf5#
- 1...Qd7
- 2.Sxc2#
- 1...Qc3
- 2.Sf5#
- 1...Qc5
- 2.Sf5#
- 1...Qc6
- 2.Sf5#
- 1...Qc7
- 2.Sf5#
- 1...Qa8
- 2.Sxc2#
- 2.Sf5#
- 1...Qb8
- 2.Sxc2#
- 2.Sf5#
- 1...Qd8
- 2.Sxc2#
- 2.Sf5#
- 1...Qe8
- 2.Sxc2#
- 2.Sf5#
- 1...Qf8
- 2.Sxc2#
- 1...Qg8
- 2.Sxc2#
- 2.Sf5#
- 1...Qh8
- 2.Sxc2#
- 2.Sf5#
- 1...Sg1
- 2.Qf2#
- 1...Sg5
- 2.Qf2#
- 1...Qc4+!
- 1...Sxf4
- 1.Sdb3?
- threat
- 2.Bd2#
- 1...Sf2
- 2.Qxf2#
- 1...Qc3!
- threat
- 1.Se6?
- threat
- 2.Qe2#
- 2.Qxh3#
- 1...Sxf4
- 2.Qf2#
- 2.Qxf4#
- 1...Sf2
- 2.Qe2#
- 2.Qxf2#
- 1...Qa6
- 2.Qxh3#
- 1...Qc4
- 2.Qxh3#
- 1...Qg8
- 2.Ra3#
- 2.Qe2#
- 1...Sg1
- 2.Qf2#
- 1...Sg5
- 2.Qe2#
- 2.Qf2#
- 1...Qxe6!
- threat
- 1.Ra2?
- 1...Sxf4
- 2.Qg1#
- 2.Qf2#
- 1...Sf2
- 2.Qxf2#
- 1...Qc3
- 2.Sf5#
- 1...Qg4
- 2.Sxc2#
- 1...Qf5
- 2.Sxc2#
- 2.Sxf5#
- 1...Qa6
- 2.Sxc2#
- 2.Sf5#
- 1...Qe6
- 2.Sxc2#
- 1...Qb7
- 2.Sxc2#
- 2.Sf5#
- 1...Qd7
- 2.Sxc2#
- 1...Qc4
- 2.Sf5#
- 1...Qc5
- 2.Sf5#
- 1...Qc6
- 2.Sf5#
- 1...Qc7
- 2.Sf5#
- 1...Qa8
- 2.Sxc2#
- 2.Sf5#
- 1...Qb8
- 2.Sxc2#
- 2.Sf5#
- 1...Qd8
- 2.Sxc2#
- 2.Sf5#
- 1...Qe8
- 2.Sxc2#
- 2.Sf5#
- 1...Qf8
- 2.Sxc2#
- 1...Qg8
- 2.Sxc2#
- 2.Sf5#
- 1...Qh8
- 2.Sxc2#
- 2.Sf5#
- 1...Sg1
- 2.Qf2#
- 1...Sg5
- 2.Qf2#
- 1...Kxd4!
- 1...Sxf4
- 1.Ra3+?
- 1...Qc3
- 2.Sxc2#
- 2.Sf5#
- 1...Kxd4!
- 1...Qc3
- 1.Ra5?
- 1...Sxf4
- 2.Qg1#
- 2.Qf2#
- 1...Sf2
- 2.Qxf2#
- 1...Qc3
- 2.Sf5#
- 1...Qg4
- 2.Sxc2#
- 1...Qf5
- 2.Sxc2#
- 2.Sxf5#
- 1...Qa6
- 2.Sxc2#
- 2.Sf5#
- 1...Qe6
- 2.Sxc2#
- 1...Qb7
- 2.Sxc2#
- 2.Sf5#
- 1...Qd7
- 2.Sxc2#
- 1...Qc4
- 2.Sf5#
- 1...Qc5
- 2.Sf5#
- 1...Qc6
- 2.Sf5#
- 1...Qc7
- 2.Sf5#
- 1...Qa8
- 2.Sxc2#
- 2.Sf5#
- 1...Qb8
- 2.Sxc2#
- 2.Sf5#
- 1...Qd8
- 2.Sxc2#
- 2.Sf5#
- 1...Qe8
- 2.Sxc2#
- 2.Sf5#
- 1...Qf8
- 2.Sxc2#
- 1...Qg8
- 2.Sxc2#
- 2.Sf5#
- 1...Qh8
- 2.Sxc2#
- 2.Sf5#
- 1...Sg1
- 2.Qf2#
- 1...Sg5
- 2.Qf2#
- 1...Kxd4!
- 1...Sxf4
- 1.d6?
- 1...Sxf4
- 2.Qg1#
- 2.Qf2#
- 1...Qc4
- 2.Sf5#
- 1...Sf2
- 2.Qxf2#
- 1...Qc3
- 2.Sf5#
- 1...Qg4
- 2.Sxc2#
- 1...Qf5
- 2.Sxc2#
- 2.Sxf5#
- 1...Qa6
- 2.Sxc2#
- 2.Sf5#
- 1...Qe6
- 2.Sxc2#
- 1...Qb7
- 2.Sxc2#
- 2.Sf5#
- 1...Qd7
- 2.Sxc2#
- 1...Qc6
- 2.Sf5#
- 1...Qc7
- 2.Sf5#
- 1...Qa8
- 2.Sxc2#
- 2.Sf5#
- 1...Qb8
- 2.Sxc2#
- 2.Sf5#
- 1...Qd8
- 2.Sxc2#
- 2.Sf5#
- 1...Qe8
- 2.Sxc2#
- 2.Sf5#
- 1...Qf8
- 2.Sxc2#
- 1...Qg8
- 2.Sxc2#
- 2.Sf5#
- 1...Qh8
- 2.Sxc2#
- 2.Sf5#
- 1...Sg1
- 2.Qf2#
- 1...Sg5
- 2.Qf2#
- 1...Qc5!
- 1...Sxf4
- 1.Ka2?
- Keys
- 1.Sde2!
- 1...Sxf4
- 2.Qf2#
- 2.Qxf4#
- 1...Sf2
- 2.Qxf2#
- 1...Qg4
- 2.Ra3#
- 1...Qf5
- 2.Ra3#
- 1...Qa6
- 2.Qxh3#
- 1...Qe6
- 2.Ra3#
- 1...Qb7
- 2.Qxh3#
- 1...Qd7
- 2.Ra3#
- 1...Qc3
- 2.Qxh3#
- 1...Qc4
- 2.Qxh3#
- 1...Qc5
- 2.Qxh3#
- 1...Qc6
- 2.Qxh3#
- 1...Qc7
- 2.Qxh3#
- 1...Qa8
- 2.Qxh3#
- 1...Qb8
- 2.Qxh3#
- 1...Qd8
- 2.Ra3#
- 2.Qxh3#
- 1...Qe8
- 2.Ra3#
- 2.Qxh3#
- 1...Qf8
- 2.Qxh3#
- 1...Qg8
- 2.Ra3#
- 1...Qh8
- 2.Qxh3#
- 1...Sg1
- 2.Qf2#
- 1...Sg5
- 2.Qf2#
- 1...Sxf4
- 1.Sde2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- Q(f);N_GUARD::S(G),XP(a)
- Q(f);N_GUARD,P_PINP(E)::S(G)
- Q(f);N_GUARD::S(G)
- S(c);N_GUARD::QAB1(D)
- S(c);N_GUARD::QAB1(D),XS(c)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(c);N_GUARD::QAB1(D),XS(c)
- Q(f);N_GUARD::S(G),XP(a)
- Q(f);N_GUARD,P_PINP(I)::S(G),XP(a)
- Q(f);N_GUARD::S(G)
- S(c);N_GUARD::QAB1(D)
- Refutation
- Q(f);CHECK
- Try
- S(G);
- Threat
- B(C)
- Vars
- S(c);N_GUARD::QAB1(D),XS(c)
- Refutation
- Q(f);P_PINP(E)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(f);P_PINR(F)::QAR(D),XS(c)
- Q(f);::QAR(D),XS(c)
- S(c);N_GUARD::QAB1(D)
- Refutation
- Q(f);XS(G)
- Try
- R(F);
- Vars
- S(c);N_GUARD::QAB1(D),XS(c)
- Q(f);N_GUARD,P_PINP(E)::S(G)
- Q(f);N_GUARD::S(G),XP(a)
- Q(f);N_GUARD::S(G)
- S(c);N_GUARD::QAB1(D)
- Refutation
- K(b);S_FLIGHT,XS(G)
- Try
- R(F);CHECK
- Refutation
- K(b);S_FLIGHT,XS(G)
- Try
- R(F);
- Vars
- S(c);N_GUARD::QAB1(D),XS(c)
- Q(f);N_GUARD,P_PINP(E)::S(G)
- Q(f);N_GUARD::S(G),XP(a)
- Q(f);N_GUARD::S(G)
- S(c);N_GUARD::QAB1(D)
- Refutation
- K(b);S_FLIGHT,XS(G)
- Try
- P(I);
- Vars
- Q(f);N_GUARD::S(G)
- S(c);N_GUARD::QAB1(D),XS(c)
- Q(f);N_GUARD,P_PINP(E)::S(G)
- Q(f);N_GUARD::S(G),XP(a)
- S(c);N_GUARD::QAB1(D)
- Refutation
- Q(f);
- Try
- Actual
- S(G);
- Vars
- S(c);N_GUARD::QAB1(D),XS(c)
- Q(f);N_GUARD::R(F)
- Q(f);N_GUARD,P_PINR(F)::QAR(D),XS(c)
- Q(f);N_GUARD::QAR(D),XS(c)
- Q(f);N_GUARD,P_PINP(E)::QAR(D),XS(c)
- S(c);N_GUARD::QAB1(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).