MESON Chess Problem Database
Problem Display
PID: 18908 (1B2B2b/K1Qp1r2/NpP1p3/3k1n2/3P2R1/1P3P1N/2n1P3/1b6 w - - 0 1)
Savournin, Jacques
Comm., Europe Echecs, 1959
#2
12 + 9
| 6124 | Lignes et Figures | 1992 |
SOLUTION
- SOUND
- Sets
- 1...Bxd4
- 2.Sf4#
- 2.e4#
- 1...Sa1
- 2.Sb4#
- 1...Se1
- 2.Sb4#
- 1...Sa3
- 2.Sb4#
- 1...Sce3
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 1...Scxd4
- 2.Sf4#
- 1...Sfe3
- 2.Qd6#
- 1...Sg3
- 2.Qd6#
- 1...Sfxd4
- 2.Qd6#
- 2.e4#
- 1...Sh4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sh6
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 2.Qxd7#
- 1...Sg7
- 2.Qd6#
- 1...e5
- 2.Bxf7#
- 1...dxc6
- 2.Bxc6#
- 1...Bxd4
- Tries
- 1.Re4?
- threat
- 2.Sf4#
- 1...Sfxd4
- 2.Qd6#
- 1...e5
- 2.Bxf7#
- 1...Sfe3
- 2.Qd6#
- 1...Sg3
- 2.Qd6#
- 1...Sh4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sh6
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 2.Qxd7#
- 1...Sg7
- 2.Qd6#
- 1...Be5!
- threat
- 1.Qxd7+?
- 1...Sd6
- 2.Sc7#
- 1...Rxd7+!
- 1...Sd6
- 1.e3?
- threat
- 2.Sf4#
- 1...Scxe3
- 2.Sb4#
- 1...Sfxe3
- 2.Qd6#
- 1...Sfxd4
- 2.Qd6#
- 2.e4#
- 1...e5
- 2.Bxf7#
- 1...Sg3
- 2.Qd6#
- 1...Sh4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sh6
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 2.Qxd7#
- 1...Sg7
- 2.Qd6#
- 1...Be5!
- threat
- 1.cxd7?
- threat
- 2.Qc4#
- 2.Qb7#
- 1...Scxd4
- 2.Sf4#
- 2.Sb4#
- 2.Qc4#
- 1...Sfxd4
- 2.Qd6#
- 2.Qc4#
- 2.e4#
- 1...e5
- 2.Bxf7#
- 2.Qc4#
- 1...Sa3
- 2.Sb4#
- 2.Qb7#
- 1...Sce3
- 2.Sb4#
- 2.Qb7#
- 1...Sb4
- 2.Sxb4#
- 2.Qc4#
- 1...Sfe3
- 2.Qd6#
- 2.Qb7#
- 1...Sd6
- 2.Qxd6#
- 1...Se7
- 2.Qd6#
- 2.Qc4#
- 2.d8Q#
- 2.d8R#
- 1...b5
- 2.Qc5#
- 2.Qb7#
- 1...Rxd7!
- threat
- 1.Re4?
- Keys
- 1.Qb7!
- threat
- 2.cxd7#
- 1...Scxd4
- 2.Sf4#
- 1...Sfxd4
- 2.e4#
- 1...dxc6
- 2.Bxc6#
- 1...e5
- 2.Bxf7#
- 1...Sb4
- 2.Sxb4#
- 1...Sd6
- 2.Sc7#
- 1...Se7
- 2.Qxd7#
- 1...d6
- 2.c7#
- threat
- 1.Qb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- S(b);SBLOCK,XP(E)::S(D)
- S(d);N_GUARD::QAR1(J)
- S(d);N_GUARD::QAR1(J),XS(d)
- P(f);OGATEB::B(L),XR(h)
- P(g);OGATE,P_PINQ(J),XP(H)::B(L),XP(g)
- Tries
- Try
- R(F);
- Threat
- S(D)
- Vars
- S(d);N_GUARD,XP(E)::QAR1(J)
- P(f);OGATEB::B(L),XR(h)
- S(d);N_GUARD::QAR1(J)
- S(d);N_GUARD::QAR1(J),XS(d)
- Refutation
- B(i);
- Try
- Q(J);CHECK,P_SPINQ(J),XP(g)
- Vars
- S(d);P_SPINS(d)::S(G)
- Refutation
- R(h);CHECK,XQ(J)
- Try
- P(A);
- Threat
- S(D)
- Vars
- S(b);N_GUARD,XP(A)::S(G)
- S(d);N_GUARD,XP(A)::QAR1(J)
- P(f);OGATEB::B(L),XR(h)
- S(d);N_GUARD::QAR1(J)
- S(d);N_GUARD::QAR1(J),XS(d)
- Refutation
- B(i);
- Try
- P(H);XP(g)
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD::QAR1(J),XS(d)
- Refutation
- R(h);P_PINQ(J),XP(H)
- Try
- Actual
- Q(J);
- Threat
- QAB(J)+P(H),XP(g)
- Vars
- S(b);SBLOCK,XP(E)::S(D)
- S(d);SBLOCK,XP(E)::P(A)
- P(g);OGATE,P_PINQ(J),P_SPINP(g),XP(H)::B(L),XP(g)
- P(f);OGATEB::B(L),XR(h)
- S(b);N_GUARD::S(G),XS(b)
- S(d);SBLOCK::S(G)
- S(d);N_GUARD,S_CUTR(h)::QAR2(J),XP(g)
- P(g);P_PINQ(J),SBLOCK::QAB(J)+P(H)
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).