MESON Chess Problem Database
Problem Display
PID: 64829 (q1bBR3/1Q3B2/1r4Nb/1pp4p/2Pk3r/6Np/pPR1PPnK/8 w - - 0 1)
Prins, Hendrik
1st Prize, Probleemblad, 1981
#2
12 + 12
| 3752 | FIDE Album (1980-1982) | 1988 |
| 56 | The Problemist | 2006 |
| 1099 | WCSC | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Qa3
- 2.Qd5#
- 1...Qa4
- 2.Qd5#
- 1...Qa5
- 2.Qd5#
- 1...Qa6
- 2.Qd5#
- 1...Qa7
- 2.Qd5#
- 1...Qb8
- 2.Qd5#
- 1...Re4
- 2.Rxe4#
- 1...Rf4
- 2.Rd2#
- 1...Re6
- 2.Sf5#
- 1...Rf6
- 2.Bxf6#
- 1...Rxb7
- 2.Bf6#
- 1...Bd2
- 2.Rxd2#
- 1...Bf4
- 2.Re4#
- 1...Bg7
- 2.Rd2#
- 1...Bf8
- 2.Rd2#
- 1...Bg4
- 2.Re4#
- 1...Bf5
- 2.Sxf5#
- 1...Be6
- 2.Bf6#
- 1...Bxb7
- 2.Sf5#
- 1...Se3
- 2.Rd2#
- 1...Sf4
- 2.Re4#
- 1...bxc4
- 2.Rxc4#
- 1...Qa3
- Tries
- 1.Sf4?
- threat
- 2.Rd2#
- 2.Re4#
- 1...Qxb7
- 2.Rd2#
- 1...Rxf4
- 2.Rd2#
- 1...Bxf4
- 2.Re4#
- 1...Bxb7
- 2.Sf5#
- 2.Rd2#
- 1...Sxf4
- 2.Re4#
- 1...Be6
- 2.Bf6#
- 1...Qa3
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Qa5
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Bf5
- 2.Sxf5#
- 1...Se1
- 2.Re4#
- 2.e3#
- 1...Re6!
- threat
- 1.Sxh4?
- threat
- 2.Sf3#
- 2.Re4#
- 1...Bxb7
- 2.Sgf5#
- 2.Shf5#
- 1...Sxh4
- 2.Re4#
- 1...Re6
- 2.Sf3#
- 1...Be6
- 2.Sf3#
- 2.Bf6#
- 1...Qa3
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Rf6
- 2.Bxf6#
- 2.Re4#
- 1...Bg4
- 2.Re4#
- 1...Bf5
- 2.Sgxf5#
- 2.Sf3#
- 2.Shxf5#
- 1...Se1
- 2.Re4#
- 1...Qxb7!
- threat
- 1.Be6?
- threat
- 2.Sf5#
- 2.Bf6#
- 1...Qxb7
- 2.Bf6#
- 1...Rxe6
- 2.Sf5#
- 1...Rxb7
- 2.Bf6#
- 1...Bxe6
- 2.Bf6#
- 1...Bxb7
- 2.Bf6#
- 1...Qb8
- 2.Qd5#
- 1...Re4
- 2.Sf5#
- 1...Rf4
- 2.Rd2#
- 1...Rc6
- 2.Bf6#
- 1...Bg5
- 2.Sf5#
- 1...Bg7
- 2.Sf5#
- 2.Rd2#
- 2.Qxg7#
- 1...Se3
- 2.Bf6#
- 2.Rd2#
- 1...Bf4!
- threat
- 1.Bxh4?
- threat
- 2.Re4#
- 1...Bxb7
- 2.Sf5#
- 1...Re6
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 1...Be6
- 2.Bf6#
- 1...Qxb7!
- threat
- 1.Bc7?
- threat
- 2.Be5#
- 1...Qb8
- 2.Qd5#
- 1...Re4
- 2.Rxe4#
- 1...Re6
- 2.Sf5#
- 1...Bf4
- 2.Re4#
- 1...Bg7
- 2.Rd2#
- 1...Rd6!
- threat
- 1.Rc3?
- threat
- 2.Rd3#
- 1...bxc4
- 2.Rxc4#
- 1...Qa3
- 2.Qd5#
- 1...Re6
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 1...Be6
- 2.Bf6#
- 1...Sf4
- 2.Re4#
- 2.e3#
- 1...Se1!
- threat
- 1.Re6?
- threat
- 2.Sf5#
- 2.Bf6#
- 1...Rxe6
- 2.Sf5#
- 1...Bxe6
- 2.Bf6#
- 1...Qb8
- 2.Qd5#
- 1...Re4
- 2.Sf5#
- 2.Rxe4#
- 1...Bf4
- 2.Re4#
- 1...Bg5
- 2.Sf5#
- 1...Bg7
- 2.Sf5#
- 1...Se3
- 2.Bf6#
- 1...Rf4!
- threat
- 1.Qd7+?
- 1...Qd5
- 2.Sf5#
- 2.Qxd5#
- 1...Rd6
- 2.Sf5#
- 2.Bf6#
- 1...Bxd7!
- 1...Qd5
- 1.f4?
- threat
- 2.Rd2#
- 2.Re4#
- 1...Qxb7
- 2.Rd2#
- 1...Rxf4
- 2.Rd2#
- 1...Bxf4
- 2.Re4#
- 1...Bxb7
- 2.Sf5#
- 2.Rd2#
- 1...Sxf4
- 2.Re4#
- 1...Re6
- 2.Sf5#
- 1...Qa3
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Qa5
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Bf5
- 2.Sxf5#
- 1...Se1
- 2.Re4#
- 1...Be6!
- threat
- 1.Sf4?
- Keys
- 1.cxb5!
- threat
- 2.Rc4#
- 1...c4
- 2.Bxb6#
- 2.Rxc4#
- 2.Qxb6#
- 1...Qa4
- 2.Qd5#
- 1...Re6
- 2.Sf5#
- 1...Be6
- 2.Bf6#
- 1...Se3
- 2.Rd2#
- threat
- 1.cxb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 18
- Sets
- Q(k);N_GUARD::QAR1(I)
- Q(k);N_GUARD,P_PINS(F)::QAR1(I)
- R(e);N_GUARD::R1(L),XR(e)
- R(e);S_CUTB(j)::R(B)
- R(i);S_CUTB(l)::S(F)
- R(i);N_GUARD::B(K),XR(i)
- R(i);N_GUARD,XQ(I)::B(K)
- B(j);N_GUARD::R(B),XB(j)
- B(j);P_PINS(F),S_CUTR(e)::R1(L)
- B(j);N_GUARD::R(B)
- B(l);S_CUTR(e)::R1(L)
- B(l);N_GUARD::S(F),XB(l)
- B(l);S_CUTR(i)::B(K)
- B(l);N_GUARD,XQ(I)::S(F)
- S(b);S_CUTB(j)::R(B)
- S(b);S_CUTR(e)::R1(L)
- P(f);OGATE,XP(G)::R1(B),XP(f)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(k);XQ(I)::R(B)
- R(e);XS(H)::R(B)
- B(j);P_PINS(F),XS(H)::R1(L)
- S(b);XS(H)::R1(L)
- B(l);S_CUTR(i)::B(K)
- B(l);N_GUARD::S(F),XB(l)
- Refutation
- R(i);
- Try
- S(H);XR(e)
- Threat
- DUALS(2)
- Vars
- S(b);XS(H)::R1(L)
- R(i);::S(H)
- B(l);::R1(L)
- S(b);::R1(L)
- Refutation
- Q(k);XQ(I)
- Try
- B(J);
- Threat
- DUALS(2)
- Vars
- Q(k);XQ(I)::B(K)
- R(i);XB(J)::S(F)
- R(i);XQ(I)::B(K)
- B(l);XB(J)::B(K)
- B(l);XQ(I)::B(K)
- Q(k);N_GUARD,P_PINS(F)::QAR1(I)
- R(e);::S(F)
- R(e);S_CUTB(j)::R(B)
- R(i);::B(K)
- B(j);::S(F)
- Refutation
- B(j);P_PINS(F)
- Try
- B(K);XR(e)
- Threat
- R1(L)
- Vars
- B(l);N_GUARD,XQ(I)::S(F)
- R(i);S_CUTB(l)::S(F)
- B(l);N_GUARD::S(F),XB(l)
- B(l);S_CUTR(i)::B(K)
- Refutation
- Q(k);XQ(I)
- Try
- B(K);
- Threat
- B(K)
- Vars
- Q(k);N_GUARD::QAR1(I)
- R(e);N_GUARD::R1(L),XR(e)
- R(i);S_CUTB(l)::S(F)
- B(j);P_PINS(F),S_CUTR(e)::R1(L)
- B(j);N_GUARD::R(B)
- Refutation
- R(i);
- Try
- R(B);
- Threat
- R1(B)
- Vars
- P(f);OGATE,XP(G)::R1(B),XP(f)
- Q(k);N_GUARD::QAR1(I)
- R(i);S_CUTB(l)::S(F)
- B(l);N_GUARD::S(F),XB(l)
- B(l);S_CUTR(i)::B(K)
- Refutation
- S(b);
- Try
- R(L);
- Threat
- DUALS(2)
- Vars
- R(i);XR(L)::S(F)
- B(l);XR(L)::B(K)
- Q(k);N_GUARD,P_PINS(F)::QAR1(I)
- B(j);P_PINS(F),S_CUTR(e)::R1(L)
- B(j);::S(F)
- S(b);::B(K)
- Refutation
- R(e);
- Try
- Q(I);CHECK
- Refutation
- B(l);XQ(I)
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- Q(k);XQ(I)::R(B)
- R(e);XP(D)::R(B)
- B(j);P_PINS(F),XP(D)::R1(L)
- S(b);XP(D)::R1(L)
- R(i);S_CUTB(l)::S(F)
- B(l);N_GUARD::S(F),XB(l)
- S(b);::R1(L)
- Refutation
- B(l);
- Try
- Actual
- P(G);XP(f)
- Threat
- R1(B)
- Vars
- Q(k);N_GUARD::QAR1(I)
- R(i);S_CUTB(l)::S(F)
- B(l);S_CUTR(i)::B(K)
- S(b);S_CUTB(j)::R(B)
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).