MESON Chess Problem Database
Problem Display
PID: 79807 (1N2nb2/3R4/pP2P2q/2kNppB1/4n3/3Q3p/1RP4K/rb6 w - - 0 1)
Savournin, Jacques
2nd HM., Europe Echecs, 1992
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qg7
- 2.Be3#
- 1...Qh4
- 2.Be3#
- 1...Qh5
- 2.Be3#
- 1...Qxe6
- 2.Be3#
- 1...Qf6
- 2.Be3#
- 1...Qg6
- 2.Be3#
- 1...Qh7
- 2.Be3#
- 1...Qh8
- 2.Be3#
- 1...Sf2
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sg3
- 2.Qc3#
- 1...Sxg5
- 2.Qc3#
- 1...S4f6
- 2.Qc3#
- 1...Sd6
- 2.Rc7#
- 1...a5
- 2.Rb5#
- 1...Qg7
- Tries
- 1.Sc3?
- threat
- 2.Rd5#
- 2.Qd5#
- 1...Qxe6
- 2.Be3#
- 1...Sxc3
- 2.Qxc3#
- 1...Ba2
- 2.Sa4#
- 1...Bd6
- 2.Qd5#
- 1...S4d6
- 2.Qd5#
- 1...S8d6
- 2.Rc7#
- 2.Qd5#
- 1...S8f6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- 1...S4f6!
- threat
- 1.Se3?
- threat
- 2.Rd5#
- 2.Qc4#
- 2.Qd5#
- 1...Ra4
- 2.Rd5#
- 2.Qd5#
- 1...Ba2
- 2.Qa3#
- 1...Bd6
- 2.Qc4#
- 2.Qd5#
- 1...Sd2
- 2.Rd5#
- 2.Qd5#
- 1...Sc3
- 2.Qc4#
- 2.Qxc3#
- 1...S4d6
- 2.Qd5#
- 1...S4f6
- 2.Qc4#
- 2.Qc3#
- 1...S8d6
- 2.Rc7#
- 2.Qd5#
- 1...S8f6
- 2.Rc7#
- 2.Qc4#
- 1...Sc7
- 2.Rxc7#
- 2.Qc4#
- 1...Qxe6!
- threat
- 1.Sf4?
- threat
- 2.Rd5#
- 2.Qd5#
- 1...Qxe6
- 2.Sxe6#
- 1...Bd6
- 2.Qd5#
- 1...Sc3
- 2.Qxc3#
- 1...S4d6
- 2.Qd5#
- 1...S4f6
- 2.Qc3#
- 1...S8d6
- 2.Rc7#
- 2.Qd5#
- 1...S8f6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- 1...Ba2!
- threat
- 1.Sf6?
- threat
- 2.Rd5#
- 2.Qd5#
- 1...S4xf6
- 2.Qc3#
- 1...S8xf6
- 2.Rc7#
- 1...Bd6
- 2.Qd5#
- 1...Sc3
- 2.Qxc3#
- 1...S4d6
- 2.Qd5#
- 1...S8d6
- 2.Rc7#
- 2.Qd5#
- 1...Sc7
- 2.Rxc7#
- 1...Ba2!
- threat
- 1.Sc7?
- threat
- 2.Rd5#
- 2.Qd5#
- 1...Qxe6
- 2.Sxe6#
- 2.Be3#
- 1...Sxc7
- 2.Rxc7#
- 1...Ba2
- 2.Scxa6#
- 1...Bd6
- 2.Qd5#
- 1...Sc3
- 2.Qxc3#
- 1...S4d6
- 2.Qd5#
- 1...S4f6
- 2.Qc3#
- 1...S8d6
- 2.Qd5#
- 1...S8f6!
- threat
- 1.Sxa6+?
- 1...Kc6
- 2.Qb5#
- 1...Rxa6!
- 1...Kc6
- 1.Rb4?
- threat
- 2.Qc4#
- 2.Qe3#
- 1...Qxg5
- 2.Qc4#
- 1...Ba2
- 2.Qe3#
- 1...Ra3
- 2.Qc4#
- 1...Bd6
- 2.Qc4#
- 1...Sd2
- 2.Qe3#
- 1...S8d6
- 2.Rc7#
- 1...f4
- 2.Qc4#
- 1...S4d6!
- threat
- 1.Rc7+?
- 1...Kd6
- 2.Sf4#
- 2.Rc6#
- 1...Sxc7!
- 1...Kd6
- 1.Qb5+?
- 1...Kd4
- 2.Sc6#
- 1...axb5!
- 1...Kd4
- 1.Sc3?
- Keys
- 1.Se7!
- threat
- 2.Rd5#
- 2.Qd5#
- 1...Qxe6
- 2.Be3#
- 1...Ba2
- 2.Sxa6#
- 1...Sc3
- 2.Qxc3#
- 1...S4d6
- 2.Qd5#
- 1...S4f6
- 2.Qc3#
- 1...S8d6
- 2.Rc7#
- 2.Qd5#
- 1...S8f6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- threat
- 1.Se7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 12
- Sets
- Q(i);N_GUARD::B(F)
- Q(i);N_GUARD,XP(H)::B(F)
- S(d);N_GUARD::QAR2(D)
- S(d);N_GUARD::QAR2(D),XS(d)
- S(d);N_GUARD,XB(F)::QAR2(D)
- S(j);N_GUARD,SBLOCK::R(I)
- P(h);N_GUARD::R1(A)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(i);N_GUARD,XP(H)::B(F)
- S(d);OGATE,XS(E)::QAR2(D),XS(d)
- B(b);S_CUTR(a)::S(E)
- B(k);::QAR1(D)
- S(d);::QAR1(D)
- S(j);N_GUARD::R(I)
- S(j);N_GUARD::R(I),XS(j)
- Refutation
- S(d);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(b);S_CUTR(a)::QAB(D)
- S(d);::QAR1(D)
- Refutation
- Q(i);XP(H)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(i);XP(H)::S(E),XQ(i)
- B(k);::QAR1(D)
- S(d);N_GUARD::QAR2(D),XS(d)
- S(d);::QAR1(D)
- S(d);N_GUARD::QAR2(D)
- S(j);N_GUARD::R(I)
- S(j);N_GUARD::R(I),XS(j)
- Refutation
- B(b);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD,XS(E)::QAR2(D)
- S(j);N_GUARD,XS(E)::R(I)
- B(k);::QAR1(D)
- S(d);N_GUARD::QAR2(D),XS(d)
- S(d);::QAR1(D)
- S(j);N_GUARD::R(I),XS(j)
- Refutation
- B(b);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(j);OGATE,XS(E)::R(I),XS(j)
- B(b);S_CUTR(a)::S(E),XP(h)
- B(k);::QAR1(D)
- S(d);N_GUARD::QAR2(D),XS(d)
- S(d);::QAR1(D)
- S(d);N_GUARD::QAR2(D)
- S(j);::QAR1(D)
- Refutation
- S(j);
- Try
- S(J);CHECK,XP(h)
- Vars
- K(e);P-FLIGHT::QAB1(D)
- Refutation
- R(a);XS(J)
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- Q(i);XB(F)::QAR1(D)
- B(b);::QAB(D)
- R(a);::QAR1(D)
- B(k);::QAR1(D)
- S(d);::QAB(D)
- S(j);N_GUARD,SBLOCK::R(I)
- P(g);::QAR1(D)
- Refutation
- S(d);
- Try
- R(I);CHECK
- Refutation
- S(j);XR(I)
- Try
- Q(D);CHECK
- Vars
- K(e);S_FLIGHT::S(J)
- Refutation
- P(h);XQ(D)
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(i);N_GUARD,XP(H)::B(F)
- B(b);S_CUTR(a)::S(J),XP(h)
- S(d);N_GUARD::QAR2(D),XS(d)
- S(d);::QAR1(D)
- S(d);N_GUARD::QAR2(D)
- S(j);N_GUARD::R(I)
- S(j);N_GUARD::R(I),XS(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).