MESON Chess Problem Database
Problem Display
PID: 207199 (2K4b/1PnNp2r/4k1Bp/2Bp3Q/3Rp3/1r5b/4N1n1/7R w - - 0 1)
Demasure, Armand
La Strategie, 1868
#2
9 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qxh3#
- 1...Rb2
- 2.Qxh3#
- 1...Rb4
- 2.Qxh3#
- 1...Rb5
- 2.Qxh3#
- 1...Rb6
- 2.Qxh3#
- 1...Rxb7
- 2.Qxh3#
- 1...Rf7
- 2.Bxf7#
- 1...Rg7
- 2.Qe5#
- 1...Bg4
- 2.Qxg4#
- 1...Bf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Bxd4
- 2.Sxd4#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Sf8#
- 1...Bg7
- 2.Bf7#
- 1...Se1
- 2.Sf4#
- 1...Se3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...e3
- 2.Qxh3#
- 1...Rb1
- Tries
- 1.Kxc7?
- threat
- 2.Qxd5#
- 1...Be5+
- 2.Qxe5#
- 1...Bxd4
- 2.Sxd4#
- 1...Bf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Se3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Rxb7+!
- threat
- 1.Rf1?
- threat
- 2.Sf8#
- 1...Rf7
- 2.Bxf7#
- 1...Bf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Bg7
- 2.Bf7#
- 1...Sf4
- 2.Sxf4#
- 1...Rf3!
- threat
- 1.Rxh3?
- threat
- 2.Bf5#
- 2.Qg4#
- 2.Qf5#
- 1...Rg3
- 2.Bf5#
- 2.Qf5#
- 1...Rf7
- 2.Bxf7#
- 1...Se3
- 2.Sf4#
- 1...Sh4
- 2.Sf4#
- 1...Rf3!
- threat
- 1.Rxe4+?
- 1...Be5
- 2.Sd4#
- 2.Rxe5#
- 2.Qxe5#
- 1...dxe4!
- 1...Be5
- 1.b8Q?
- 1...Bxd4
- 2.Sxd4#
- 1...Ra3
- 2.Qb6#
- 1...Rb1
- 2.Qxh3#
- 1...Rb2
- 2.Qxh3#
- 1...Rc3
- 2.Qb6#
- 1...Rd3
- 2.Qb6#
- 1...Re3
- 2.Qb6#
- 1...Rf3
- 2.Qb6#
- 1...Rg3
- 2.Qb6#
- 1...Rb4
- 2.Qxh3#
- 1...Rb5
- 2.Qxh3#
- 1...Rb6
- 2.Qxh3#
- 2.Qxb6#
- 1...Rb7
- 2.Qxh3#
- 1...Rf7
- 2.Bxf7#
- 1...Rg7
- 2.Qe5#
- 1...Bg4
- 2.Qxg4#
- 1...Bf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Sf8#
- 1...Bg7
- 2.Bf7#
- 1...Se1
- 2.Sf4#
- 1...Se3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...e3
- 2.Qxh3#
- 1...Rxb8+!
- 1...Bxd4
- 1.b8R?
- 1...Bxd4
- 2.Sxd4#
- 1...Ra3
- 2.Rb6#
- 1...Rb1
- 2.Qxh3#
- 1...Rb2
- 2.Qxh3#
- 1...Rc3
- 2.Rb6#
- 1...Rd3
- 2.Rb6#
- 1...Re3
- 2.Rb6#
- 1...Rf3
- 2.Rb6#
- 1...Rg3
- 2.Rb6#
- 1...Rb4
- 2.Qxh3#
- 1...Rb5
- 2.Qxh3#
- 1...Rb6
- 2.Rxb6#
- 2.Qxh3#
- 1...Rb7
- 2.Qxh3#
- 1...Rf7
- 2.Bxf7#
- 1...Rg7
- 2.Qe5#
- 1...Bg4
- 2.Qxg4#
- 1...Bf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Sf8#
- 1...Bg7
- 2.Bf7#
- 1...Se1
- 2.Sf4#
- 1...Se3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...e3
- 2.Qxh3#
- 1...Rxb8+!
- 1...Bxd4
- 1.Kxc7?
- Keys
- 1.Rb1!
- 1...Rxb1
- 2.Qxh3#
- 1...Rxb7
- 2.Qxh3#
- 1...Bxd4
- 2.Sxd4#
- 1...Ra3
- 2.Rb6#
- 1...Rb2
- 2.Qxh3#
- 1...Rc3
- 2.Rb6#
- 1...Rd3
- 2.Rb6#
- 1...Re3
- 2.Rb6#
- 1...Rf3
- 2.Rb6#
- 1...Rg3
- 2.Rb6#
- 1...Rb4
- 2.Qxh3#
- 1...Rb5
- 2.Qxh3#
- 1...Rb6
- 2.Rxb6#
- 2.Qxh3#
- 1...Rf7
- 2.Bxf7#
- 1...Rg7
- 2.Qe5#
- 1...Bg4
- 2.Qxg4#
- 1...Bf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Sf8#
- 1...Bg7
- 2.Bf7#
- 1...Se1
- 2.Sf4#
- 1...Se3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Sb5
- 2.Qxd5#
- 1...Sa6
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...e3
- 2.Qxh3#
- 1...Rxb1
- 1.Rb1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- R(b);N_GUARD::QAB(E),XB(c)
- R(b);N_GUARD,XP(G)::QAB(E),XB(c)
- R(j);N_GUARD::B(F),XR(j)
- R(j);S_CUTB(k)::QAR1(E)
- B(c);N_GUARD::QAB(E),XB(c)
- B(k);XR(C)::S(B),XB(k)
- B(k);N_GUARD::QAR1(E),XB(k)
- B(k);SBLOCK::S(H)
- B(k);S_CUTR(j)::B(F)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(h);N_GUARD::QAB1(E),XP(e)
- P(d);S_CUTR(b)::QAB(E),XB(c)
- Tries
- Try
- K(I);P-FLIGHT,XS(h)
- Threat
- QAB1(E),XP(e)
- Vars
- B(k);CHECK,N_GUARD::QAR1(E),XB(k)
- B(k);XR(C)::S(B),XB(k)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- R(b);CHECK,XP(G)
- Try
- R(A);
- Threat
- S(H)
- Vars
- R(j);N_GUARD::B(F),XR(j)
- B(k);S_CUTR(j)::B(F)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- R(b);
- Try
- R(A);XB(c)
- Threat
- DUALS(3)
- Vars
- R(j);N_GUARD::B(F),XR(j)
- S(a);N_GUARD::S(B)
- Refutation
- R(b);
- Try
- R(C);CHECK,XP(d)
- Refutation
- P(e);XR(C)
- Try
- P(G);
- Vars
- B(k);XR(C)::S(B),XB(k)
- R(b);N_GUARD::QAR(G)
- R(b);N_GUARD::QAB(E),XB(c)
- R(j);N_GUARD::B(F),XR(j)
- R(j);S_CUTB(k)::QAR1(E)
- B(c);N_GUARD::QAB(E),XB(c)
- B(k);N_GUARD::QAR1(E),XB(k)
- B(k);SBLOCK::S(H)
- B(k);S_CUTR(j)::B(F)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(h);N_GUARD::QAB1(E),XP(e)
- P(d);S_CUTR(b)::QAB(E),XB(c)
- Refutation
- R(b);CHECK,XQ(G)
- Try
- P(G);
- Vars
- B(k);XR(C)::S(B),XB(k)
- R(b);N_GUARD::R(G)
- R(b);N_GUARD::QAB(E),XB(c)
- R(j);N_GUARD::B(F),XR(j)
- R(j);S_CUTB(k)::QAR1(E)
- B(c);N_GUARD::QAB(E),XB(c)
- B(k);N_GUARD::QAR1(E),XB(k)
- B(k);SBLOCK::S(H)
- B(k);S_CUTR(j)::B(F)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(h);N_GUARD::QAB1(E),XP(e)
- P(d);S_CUTR(b)::QAB(E),XB(c)
- Refutation
- R(b);CHECK,XR(G)
- Try
- Actual
- R(A);
- Vars
- R(b);N_GUARD,XR(A)::QAB(E),XB(c)
- R(b);N_GUARD,XP(G)::QAB(E),XB(c)
- B(k);XR(C)::S(B),XB(k)
- R(b);OGATE::R(A)
- R(b);N_GUARD::QAB(E),XB(c)
- R(j);N_GUARD::B(F),XR(j)
- R(j);S_CUTB(k)::QAR1(E)
- B(c);N_GUARD::QAB(E),XB(c)
- B(k);N_GUARD::QAR1(E),XB(k)
- B(k);SBLOCK::S(H)
- B(k);S_CUTR(j)::B(F)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(h);N_GUARD::QAB1(E),XP(e)
- P(d);S_CUTR(b)::QAB(E),XB(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).