MESON Chess Problem Database
Problem Display
PID: 143050 (B7/4BRb1/4Pqn1/2n1kP1N/2PN3p/3Rp2P/K7/5Q2 w - - 0 1)
Savournin, Jacques
diagrammes, 1973
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Qg5
- 2.Sf3#
- 1...Qxe7
- 2.Sf3#
- 1...Qxf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Qxe6
- 2.Sf3#
- 1...Se4
- 2.Sc6#
- 1...Sf4
- 2.Qxf4#
- 1...Sxe7
- 2.Qf4#
- 1...Sf8
- 2.Qf4#
- 1...Sh8
- 2.Qf4#
- 1...Qg5
- Tries
- 1.Sc2?
- threat
- 2.Bd6#
- 1...Qxe7
- 2.Qa1#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxe6
- 2.Qa1#
- 1...Sxe7
- 2.Qf4#
- 1...Sb7
- 2.Rxe3#
- 1...Sf4
- 2.Qxf4#
- 1...Bf8
- 2.Bxf6#
- 1...Se4
- 2.Rd5#
- 1...Sxd3!
- threat
- 1.Se2?
- threat
- 2.Bd6#
- 1...Qxe7
- 2.Qa1#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxe6
- 2.Qa1#
- 1...Sxe7
- 2.Qf4#
- 1...Sb7
- 2.Rxe3#
- 1...Sf4
- 2.Qxf4#
- 1...Bf8
- 2.Bxf6#
- 1...Se4
- 2.Rd5#
- 1...Sxd3!
- threat
- 1.Sb3?
- threat
- 2.Bd6#
- 1...Qxe7
- 2.Qa1#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxe6
- 2.Qa1#
- 1...Sxe7
- 2.Qf4#
- 1...Sb7
- 2.Rxe3#
- 1...Sf4
- 2.Qxf4#
- 1...Bf8
- 2.Bxf6#
- 1...Se4
- 2.Rd5#
- 1...Sxd3!
- threat
- 1.Bxc5?
- threat
- 2.Rxe3#
- 1...Qxf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Qg5
- 2.Sf3#
- 1...e2
- 2.Re3#
- 2.Qxe2#
- 1...Bh6!
- threat
- 1.Bxf6+?
- 1...Kd6
- 2.Sb5#
- 1...Bxf6!
- 1...Kd6
- 1.Bh1?
- threat
- 2.Sc6#
- 1...Qxf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Sxe7
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Qxe6!
- threat
- 1.Bg2?
- threat
- 2.Sc6#
- 1...Qxf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Sxe7
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Qxe6!
- threat
- 1.Bd5?
- threat
- 2.Sc6#
- 1...Qxe6
- 2.Sf3#
- 1...Sxe7
- 2.Qf4#
- 1...Sf4
- 2.Qxf4#
- 1...Qxe7!
- threat
- 1.Rxe3+?
- 1...Se4
- 2.Sc6#
- 2.Rxe4#
- 1...Kxd4!
- 1...Se4
- 1.Qg2?
- threat
- 2.Qd5#
- 1...Qxe6
- 2.Sf3#
- 1...Sxe7
- 2.Qh2#
- 1...Se4
- 2.Qxe4#
- 1...Sf4!
- threat
- 1.Qh1?
- threat
- 2.Qd5#
- 1...Qxe6
- 2.Sf3#
- 1...Sxe7
- 2.Qh2#
- 1...Se4
- 2.Qxe4#
- 1...Sf4!
- threat
- 1.Qf3?
- threat
- 2.Sc6#
- 2.Qd5#
- 1...Qxf5
- 2.Rxf5#
- 2.Qd5#
- 2.Qxf5#
- 1...Sxe7
- 2.Qf4#
- 1...Se4
- 2.Sc6#
- 2.Qxe4#
- 1...Sf4
- 2.Qxf4#
- 1...Qxe6!
- threat
- 1.Sc2?
- Keys
- 1.Sb5!
- threat
- 2.Bd6#
- 1...Qxe7
- 2.Qa1#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxe6
- 2.Qa1#
- 1...Sxe7
- 2.Qf4#
- 1...Sb7
- 2.Rxe3#
- 1...Sf4
- 2.Qxf4#
- 1...Bf8
- 2.Bxf6#
- 1...Se4
- 2.Rd5#
- threat
- 1.Sb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- Q(e);::S(F)
- Q(e);XB(J)::S(F)
- Q(e);P_PINP(E),XP(I)::S(F)
- S(c);SBLOCK::S(F)
- S(f);N_GUARD::QAB1(A),XS(f)
- S(f);N_GUARD,XB(J)::QAB1(A)
- S(f);N_GUARD::QAB1(A)
- Tries
- Try
- S(F);
- Threat
- B(J)
- Vars
- Q(e);XB(J)::QAB(A)
- Q(e);OGATE,XP(G)::QAR1(A),XQ(e)
- Q(e);P_PINP(E),XP(I)::QAB(A)
- S(f);N_GUARD,XB(J)::QAB1(A)
- S(c);N_GUARD::R(C),XP(a)
- S(f);N_GUARD::QAB1(A),XS(f)
- B(g);N_GUARD::B(J),XQ(e)
- S(c);SBLOCK::R1(C)
- Refutation
- S(c);XR(C)
- Try
- S(F);
- Threat
- B(J)
- Vars
- Q(e);XB(J)::QAB(A)
- Q(e);OGATE,XP(G)::QAR1(A),XQ(e)
- Q(e);P_PINP(E),XP(I)::QAB(A)
- S(f);N_GUARD,XB(J)::QAB1(A)
- S(c);N_GUARD::R(C),XP(a)
- S(f);N_GUARD::QAB1(A),XS(f)
- B(g);N_GUARD::B(J),XQ(e)
- S(c);SBLOCK::R1(C)
- Refutation
- S(c);XR(C)
- Try
- S(F);
- Threat
- B(J)
- Vars
- Q(e);XB(J)::QAB(A)
- Q(e);OGATE,XP(G)::QAR1(A),XQ(e)
- Q(e);XP(I)::QAB(A)
- S(f);N_GUARD,XB(J)::QAB1(A)
- S(c);N_GUARD::R(C),XP(a)
- S(f);N_GUARD::QAB1(A),XS(f)
- B(g);N_GUARD::B(J),XQ(e)
- S(c);SBLOCK::R1(C)
- Refutation
- S(c);XR(C)
- Try
- B(J);XS(c)
- Threat
- R(C),XP(a)
- Vars
- Q(e);::S(F)
- Refutation
- B(g);
- Try
- B(J);CHECK,XQ(e)
- Vars
- K(d);S_FLIGHT::R(C)+S(F),DCHECK
- Refutation
- B(g);XB(J)
- Try
- B(L);
- Threat
- S(F)
- Vars
- S(f);N_GUARD,XB(J)::QAB1(A)
- S(f);N_GUARD::QAB1(A),XS(f)
- Refutation
- Q(e);P_PINP(E),XP(I)
- Try
- B(L);
- Threat
- S(F)
- Vars
- S(f);N_GUARD,XB(J)::QAB1(A)
- S(f);N_GUARD::QAB1(A),XS(f)
- Refutation
- Q(e);P_PINP(E),XP(I)
- Try
- B(L);
- Threat
- S(F)
- Vars
- Q(e);XP(I)::S(F)
- S(f);N_GUARD,XB(J)::QAB1(A)
- S(f);N_GUARD::QAB1(A),XS(f)
- Refutation
- Q(e);XB(J)
- Try
- R(C);CHECK,XP(a)
- Refutation
- K(d);S_FLIGHT,XS(F)
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- Q(e);P_PINP(E),XP(I)::S(F)
- S(f);N_GUARD,XB(J)::QAB(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- Refutation
- S(f);
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- Q(e);P_PINP(E),XP(I)::S(F)
- S(f);N_GUARD,XB(J)::QAB(A)
- S(c);N_GUARD::QAR1(A),XS(c)
- Refutation
- S(f);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(f);N_GUARD,XB(J)::QAB1(A)
- S(f);N_GUARD::QAB1(A),XS(f)
- Refutation
- Q(e);P_PINP(E),XP(I)
- Try
- Actual
- S(F);
- Threat
- B(J)
- Vars
- Q(e);XB(J)::QAB(A)
- Q(e);OGATE,XP(G)::QAR1(A),XQ(e)
- Q(e);P_PINP(E),XP(I)::QAB(A)
- S(f);N_GUARD,XB(J)::QAB1(A)
- S(c);N_GUARD::R(C),XP(a)
- S(f);N_GUARD::QAB1(A),XS(f)
- B(g);N_GUARD::B(J),XQ(e)
- S(c);SBLOCK::R1(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).