MESON Chess Problem Database
Problem Display
PID: 80005 (4Q3/3BpP2/2P2pK1/1p1NkNp1/3Rn1Pp/b1pp1RP1/1r5B/8 w - - 0 1)
Savournin, Jacques
2nd HM., Themes-64, 1964
#2
12 + 11
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Qxe7#
- 1...Sd2
- 2.gxh4#
- 1...Sf2
- 2.gxh4#
- 1...Sxg3
- 2.Re3#
- 1...Sc5
- 2.Qb8#
- 1...Sd6
- 2.Qxe7#
- 1...b4
- 2.Qxe7#
- 1...e6
- 2.Qxe6#
- 1...Rb4
- Tries
- 1.Sxc3?
- threat
- 2.Rxe4#
- 2.Rd5#
- 1...Sxg3
- 2.Re3#
- 2.Re4#
- 2.Rd5#
- 1...Re2
- 2.Rd5#
- 1...Rb4
- 2.Rd5#
- 2.Qxe7#
- 1...Sd2
- 2.Rd5#
- 2.gxh4#
- 1...Sf2
- 2.Rd5#
- 2.gxh4#
- 1...Sc5
- 2.Rd5#
- 2.Qb8#
- 1...Sd6
- 2.Rd5#
- 2.Qxe7#
- 1...Sxc3!
- threat
- 1.Sde3?
- threat
- 2.Rd5#
- 1...Sd2
- 2.gxh4#
- 1...Sf2
- 2.gxh4#
- 1...Sc5
- 2.Qb8#
- 1...Sd6
- 2.Qxe7#
- 1...Sxg3!
- threat
- 1.Sb4?
- threat
- 2.Sxd3#
- 2.Rd5#
- 2.Qxe7#
- 1...Rxb4
- 2.Qxe7#
- 1...Sxg3
- 2.Sxd3#
- 2.Re3#
- 2.Qxe7#
- 2.Qb8#
- 1...Rd2
- 2.Rd5#
- 2.Qxe7#
- 1...Sd2
- 2.Sxd3#
- 2.Qxe7#
- 2.Qb8#
- 2.gxh4#
- 1...Sf2
- 2.Qxe7#
- 2.Qb8#
- 2.gxh4#
- 1...Sc5
- 2.Qb8#
- 1...Sd6
- 2.Sxd3#
- 2.Qxe7#
- 1...d2
- 2.Sd3#
- 2.Rd5#
- 2.Qxe7#
- 1...e6
- 2.Sxd3#
- 2.Rd5#
- 2.Qxe6#
- 1...Bxb4!
- threat
- 1.Sf4?
- threat
- 2.Sxd3#
- 2.Rd5#
- 1...Sxg3
- 2.Sxd3#
- 1...gxf4
- 2.gxf4#
- 1...Rd2
- 2.Rd5#
- 1...Sd2
- 2.Sxd3#
- 1...Sc5
- 2.Qb8#
- 1...Sd6
- 2.Sxd3#
- 2.Qxe7#
- 1...d2
- 2.Sd3#
- 2.Rd5#
- 1...Sf2!
- threat
- 1.Sxf6?
- threat
- 2.Rxe4#
- 2.Rd5#
- 1...Sxg3
- 2.Re3#
- 2.Re4#
- 2.Rd5#
- 1...Re2
- 2.Rd5#
- 1...Rb4
- 2.Rd5#
- 2.Qxe7#
- 1...Sd2
- 2.Rd5#
- 2.gxh4#
- 1...Sf2
- 2.Rd5#
- 2.gxh4#
- 1...Sc5
- 2.Rd5#
- 2.Qb8#
- 1...Sd6
- 2.Rd5#
- 2.Qxe7#
- 1...Sxf6!
- threat
- 1.Sc7?
- threat
- 2.Rd5#
- 1...Sxg3
- 2.Re3#
- 1...Sd2
- 2.gxh4#
- 1...Sf2
- 2.gxh4#
- 1...Sd6
- 2.Qxe7#
- 1...Sc5!
- threat
- 1.Sdxe7?
- threat
- 2.Rd5#
- 1...Bxe7
- 2.Qxe7#
- 1...Sxg3
- 2.Re3#
- 1...Sd2
- 2.gxh4#
- 1...Sf2
- 2.gxh4#
- 1...Sc5
- 2.Qb8#
- 1...Sd6!
- threat
- 1.Qb8+?
- 1...Sd6
- 2.Re3#
- 1...Bd6!
- 1...Sd6
- 1.gxh4+?
- 1...Sg3
- 2.Bxg3#
- 2.Re3#
- 1...Rxh2!
- 1...Sg3
- 1.Sxc3?
- Keys
- 1.Sb6!
- threat
- 2.Rd5#
- 1...Sxg3
- 2.Re3#
- 1...Sd2
- 2.gxh4#
- 1...Sf2
- 2.gxh4#
- 1...Sc5
- 2.Qb8#
- 1...Sd6
- 2.Qxe7#
- threat
- 1.Sb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- R(a);S_CUTB(b)::QAR2(L),XP(k)
- S(e);N_GUARD,S_CUTR(a)::B(A)+P(C),XP(f)
- S(e);OGATEB,P_SPINS(e),XP(C)::R(B)
- S(e);N_GUARD,S_CUTB(b)::QAB(L)
- S(e);S_CUTB(b)::QAR2(L),XP(k)
- P(g);S_CUTB(b)::QAR2(L),XP(k)
- P(k);OGATE::QAR1(L),XP(k)
- Tries
- Try
- S(F);XP(c)
- Threat
- DUALS(2)
- Vars
- R(a);::R1(D)
- Refutation
- S(e);XS(F)
- Try
- S(F);
- Threat
- R1(D)
- Vars
- S(e);N_GUARD,S_CUTR(a)::B(A)+P(C),XP(f)
- S(e);N_GUARD,S_CUTB(b)::QAB(L)
- S(e);S_CUTB(b)::QAR2(L),XP(k)
- Refutation
- S(e);P_SPINS(e),XP(C)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(a);XS(F)::QAR2(L),XP(k)
- S(e);N_GUARD::QAB(L)
- Refutation
- B(b);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(e);XP(C)::S(F),XP(d)
- P(i);OGATE,XS(F)::P(C),XP(i)
- R(a);::R1(D)
- S(e);::S(F),XP(d)
- S(e);N_GUARD,S_CUTB(b)::QAB(L)
- Refutation
- S(e);
- Try
- S(F);XP(j)
- Threat
- DUALS(2)
- Vars
- R(a);::R1(D)
- Refutation
- S(e);XS(F)
- Try
- S(F);
- Threat
- R1(D)
- Vars
- S(e);OGATEB,P_SPINS(e),XP(C)::R(B)
- S(e);N_GUARD,S_CUTR(a)::B(A)+P(C),XP(f)
- S(e);S_CUTB(b)::QAR2(L),XP(k)
- Refutation
- S(e);
- Try
- S(F);XP(k)
- Threat
- R1(D)
- Vars
- B(b);OGATE,P_SPINB(b),XS(F)::QAR2(L),XB(b)
- S(e);OGATEB,P_SPINS(e),XP(C)::R(B)
- S(e);N_GUARD,S_CUTR(a)::B(A)+P(C),XP(f)
- S(e);N_GUARD,S_CUTB(b)::QAB(L)
- Refutation
- S(e);
- Try
- Q(L);CHECK,N_PINP(k)
- Vars
- S(e);P_SPINS(e),S_CUTB(b)::R(B)
- Refutation
- B(b);P_SPINB(b)
- Try
- P(C);CHECK,XP(f)
- Refutation
- R(a);XB(A)
- Try
- Actual
- S(F);
- Threat
- R1(D)
- Vars
- S(e);OGATEB,P_SPINS(e),XP(C)::R(B)
- S(e);N_GUARD,S_CUTR(a)::B(A)+P(C),XP(f)
- S(e);N_GUARD,S_CUTB(b)::QAB(L)
- S(e);S_CUTB(b)::QAR2(L),XP(k)
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).