MESON Chess Problem Database
Problem Display
PID: 79779 (K1NR2BQ/5p2/4kB2/p4ppp/7r/3n1N2/3q2nb/7b w - - 0 1)
Savournin, Jacques
2nd HM., Praca, 1959
#2
7 + 12
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sxg5#
- 1...Qc3
- 2.Sxg5#
- 1...Qb4
- 2.Sxg5#
- 1...Qd1
- 2.Sxg5#
- 1...Qa2
- 2.Sxg5#
- 1...Qb2
- 2.Sxg5#
- 1...Qc2
- 2.Sxg5#
- 1...Qe2
- 2.Sxg5#
- 1...Qf2
- 2.Sxg5#
- 1...Rh3
- 2.Sd4#
- 1...Rd4
- 2.Sxd4#
- 1...Rf4
- 2.Sxg5#
- 2.Rd6#
- 1...Bg1
- 2.Rd6#
- 1...Bf4
- 2.Sd4#
- 1...Bd6
- 2.Rxd6#
- 1...Sgf4
- 2.Rd6#
- 1...Sdf4
- 2.Sxg5#
- 1...f4
- 2.Sd4#
- 1...g4
- 2.Sd4#
- 1...Qe1
- Tries
- 1.Bd4?
- threat
- 2.Qf6#
- 2.Qh6#
- 1...Rxd4
- 2.Sxd4#
- 2.Qh6#
- 1...Bd6
- 2.Rxd6#
- 1...f4
- 2.Qf6#
- 1...Sgf4
- 2.Rd6#
- 2.Qf6#
- 1...Sdf4
- 2.Sxg5#
- 2.Rd6#
- 2.Qe5#
- 2.Qf6#
- 1...Se5
- 2.Rd6#
- 1...g4
- 2.Qf6#
- 1...Be5!
- threat
- 1.Be7?
- threat
- 2.Qf6#
- 2.Qh6#
- 1...Bd6
- 2.Rxd6#
- 1...f4
- 2.Sd4#
- 2.Qf6#
- 1...Qc3
- 2.Sxg5#
- 1...Qb2
- 2.Sxg5#
- 1...Sgf4
- 2.Rd6#
- 2.Qf6#
- 1...Sdf4
- 2.Sxg5#
- 2.Qe5#
- 2.Qf6#
- 1...Se5
- 2.Qf6#
- 1...g4
- 2.Sd4#
- 2.Qf6#
- 1...Be5!
- threat
- 1.Qg7?
- threat
- 2.Bxf7#
- 2.Qxf7#
- 1...f4
- 2.Sd4#
- 1...Se5!
- threat
- 1.Qh7?
- threat
- 2.Qxf7#
- 1...Kxf6
- 2.Qh6#
- 2.Qxf7#
- 1...f4
- 2.Rd6#
- 1...Se5!
- threat
- 1.Bd4?
- Keys
- 1.Qh6!
- threat
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bd4#
- 2.Be5#
- 2.Bxg5#
- 2.Be7#
- 2.Bg7#
- 2.Bh8#
- 1...Bd6
- 2.Rxd6#
- 1...f4
- 2.Sd4#
- 1...Be5
- 2.Bxe5#
- 1...Qc3
- 2.Sxg5#
- 2.Bxc3#
- 2.Bd4#
- 2.Be5#
- 1...Qb2
- 2.Sxg5#
- 2.Bxb2#
- 2.Bc3#
- 2.Bd4#
- 2.Be5#
- 1...Rd4
- 2.Sxd4#
- 2.Bxd4#
- 2.Be5#
- 2.Bxg5#
- 2.Be7#
- 2.Bg7#
- 2.Bh8#
- 1...Sgf4
- 2.Rd6#
- 1...Sb2
- 2.Bxb2#
- 2.Bc3#
- 2.Bd4#
- 2.Be5#
- 2.Bxg5#
- 2.Be7#
- 2.Bg7#
- 2.Bh8#
- 1...Sdf4
- 2.Sxg5#
- 1...Se5
- 2.Bxe5#
- 1...g4
- 2.Sd4#
- 2.Bg5#
- threat
- 1.Qh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 14
- Sets
- Q(b);N_GUARD::S(A),XP(i)
- R(f);N_GUARD::S(A)
- R(f);N_GUARD::S(A),XR(f)
- B(d);N_GUARD::R1(E)
- B(d);S_CUTR(f)::S(A)
- B(d);N_GUARD::R1(E),XB(d)
- S(c);P_PINS(A),S_CUTB(d)::R1(E)
- S(e);S_CUTQ(b)::S(A),XP(i)
- P(h);S_CUTR(f)::S(A)
- P(i);S_CUTR(f)::S(A)
- Tries
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- B(d);N_GUARD::R1(E),XB(d)
- P(h);::QAR1(G)
- S(e);S_CUTB(d)::R1(E)
- P(i);::QAR1(G)
- Refutation
- B(d);
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- B(d);N_GUARD::R1(E),XB(d)
- Q(b);N_GUARD::S(A),XP(i)
- S(e);::QAR1(G)
- Refutation
- B(d);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- P(h);S_CUTR(f)::S(A)
- Refutation
- S(e);
- Try
- Q(G);
- Threat
- QAB1(G),XP(l)
- Vars
- P(h);S_CUTB(d)::R1(E)
- Refutation
- S(e);
- Try
- Actual
- Q(G);
- Threat
- DUALS(9)
- Vars
- B(d);N_GUARD::R1(E),XB(d)
- P(h);S_CUTR(f)::S(A)
- B(d);::QAR(G)+B(B),XB(d)
- S(c);P_PINS(A),S_CUTB(d)::R1(E)
- S(e);S_CUTQ(b)::S(A),XP(i)
- S(e);::QAR(G)+B(B),XS(e)
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).