MESON Chess Problem Database
Problem Display
PID: 241396 (b3r2B/5P2/R3B2p/b2N1pr1/2PPkp1N/2p1p3/KP2Q3/4n3 w - - 0 1)
Hjelle, David
Parallele 50, 1948
#2
11 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Bxf5#
- 1...Rg2
- 2.Bxf5#
- 1...Rg3
- 2.Bxf5#
- 1...Rg4
- 2.Bxf5#
- 1...Rg6
- 2.Bxf5#
- 1...Rgg8
- 2.Bxf5#
- 1...Rxe6
- 2.Rxe6#
- 1...Bb6
- 2.Sxc3#
- 1...Bc7
- 2.Sxc3#
- 1...Bd8
- 2.Sxc3#
- 1...Bxd5
- 2.Bxd5#
- 1...Sc2
- 2.Qxc2#
- 1...Sg2
- 2.Qc2#
- 1...Sd3
- 2.Qf3#
- 1...Sf3
- 2.Qc2#
- 1...f3
- 2.Qxe3#
- 1...Rg1
- Tries
- 1.Sf3?
- threat
- 2.Sf6#
- 1...Rxe6
- 2.Rxe6#
- 1...Bxd5
- 2.Bxd5#
- 1...Sxf3
- 2.Qc2#
- 1...Bd8
- 2.Sxc3#
- 1...Rg6!
- threat
- 1.Be5?
- threat
- 2.Sf6#
- 1...Bxd5
- 2.Bxd5#
- 1...Rg6
- 2.Bxf5#
- 1...Bd8
- 2.Sxc3#
- 1...Rxe6!
- threat
- 1.Qd1?
- threat
- 2.Sf6#
- 1...Rxe6
- 2.Rxe6#
- 1...Bxd5
- 2.Bxd5#
- 1...Rg6
- 2.Bxf5#
- 1...Bd8
- 2.Sxc3#
- 1...Sd3
- 2.Qf3#
- 1...e2
- 2.Qxe2#
- 1...f3!
- threat
- 1.bxc3?
- threat
- 2.Sf6#
- 1...Rxe6
- 2.Rxe6#
- 1...Bxc3
- 2.Sxc3#
- 1...Bxd5
- 2.Bxd5#
- 1...f3
- 2.Qxe3#
- 1...Rg6
- 2.Bxf5#
- 1...Bd8!
- threat
- 1.fxe8Q?
- threat
- 2.Bxf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Bxd5
- 2.Bxd5#
- 2.Bxf5#
- 1...Rg6
- 2.Bxf5#
- 1...Rg8
- 2.Bxf5#
- 2.Bxg8#
- 1...Bb4
- 2.Bxf5#
- 1...Bc7
- 2.Sxc3#
- 2.Bxf5#
- 1...Bd8
- 2.Sxc3#
- 2.Bxf5#
- 1...Bc6
- 2.Bxf5#
- 2.Bd7#
- 1...Sd3
- 2.Bxf5#
- 2.Qf3#
- 1...Sf3
- 2.Bxf5#
- 2.Qc2#
- 1...Rg7!
- threat
- 1.fxe8R?
- threat
- 2.Bxf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Bxd5
- 2.Bxd5#
- 2.Bxf5#
- 1...Rg6
- 2.Bxf5#
- 1...Rg8
- 2.Bxf5#
- 2.Bxg8#
- 1...Bb4
- 2.Bxf5#
- 1...Bc7
- 2.Sxc3#
- 2.Bxf5#
- 1...Bd8
- 2.Sxc3#
- 2.Bxf5#
- 1...Bc6
- 2.Bxf5#
- 2.Bd7#
- 1...Sd3
- 2.Bxf5#
- 2.Qf3#
- 1...Sf3
- 2.Bxf5#
- 2.Qc2#
- 1...Rg7!
- threat
- 1.Sf3?
- Keys
- 1.Rd6!
- threat
- 2.Sf6#
- 1...Rxe6
- 2.Rxe6#
- 1...Bxd5
- 2.Bxd5#
- 1...Rg6
- 2.Bxf5#
- 1...Bd8
- 2.Sxc3#
- 1...f3
- 2.Qxe3#
- threat
- 1.Rd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 11
- Sets
- R(h);N_GUARD::B(I),XP(g)
- R(k);OGATE,XB(I)::R(H),XR(k)
- B(f);N_GUARD::S(G),XP(b)
- B(j);OGATE,P_PINP(D),XS(G)::B(I),XB(j)
- S(a);N_GUARD::QAB(C),XS(a)
- S(a);N_GUARD::QAB(C)
- S(a);N_GUARD,SBLOCK::QAB1(C)
- P(e);N_GUARD::QAR1(C),XP(c)
- Tries
- Try
- S(F);
- Threat
- S(G)
- Vars
- R(k);OGATE,XB(I)::R(H),XR(k)
- B(j);OGATE,P_PINP(D),XS(G)::B(I),XB(j)
- S(a);N_GUARD,SBLOCK,XS(F)::QAB(C)
- B(f);N_GUARD::S(G),XP(b)
- Refutation
- R(h);
- Try
- B(K);
- Threat
- S(G)
- Vars
- B(j);OGATE,P_PINP(D),XS(G)::B(I),XB(j)
- R(h);N_GUARD::B(I),XP(g)
- B(f);N_GUARD::S(G),XP(b)
- Refutation
- R(k);XB(I)
- Try
- Q(C);N_PINP(c)
- Threat
- S(G)
- Vars
- R(k);OGATE,XB(I)::R(H),XR(k)
- B(j);OGATE,P_PINP(D),XS(G)::B(I),XB(j)
- R(h);N_GUARD::B(I),XP(g)
- B(f);N_GUARD::S(G),XP(b)
- S(a);N_GUARD,SBLOCK::QAB1(C)
- P(c);OGATEB::QAR2(C),XP(c)
- Refutation
- P(e);
- Try
- P(B);XP(b)
- Threat
- S(G)
- Vars
- R(k);OGATE,XB(I)::R(H),XR(k)
- B(f);XP(B)::S(G),XB(f)
- B(j);OGATE,P_PINP(D),XS(G)::B(I),XB(j)
- P(e);N_GUARD::QAR1(C),XP(c)
- R(h);N_GUARD::B(I),XP(g)
- Refutation
- B(f);
- Try
- P(J);XR(k)
- Threat
- DUALS(5)
- Vars
- R(h);::QAR(J)+B(I),DCHECK,XP(g)
- B(f);::QAR(J)+B(I),DCHECK,XP(g)
- Refutation
- R(h);
- Try
- P(J);XR(k)
- Threat
- DUALS(5)
- Vars
- R(h);::R(J)+B(I),DCHECK,XP(g)
- B(f);::R(J)+B(I),DCHECK,XP(g)
- Refutation
- R(h);
- Try
- Actual
- R(H);
- Threat
- S(G)
- Vars
- R(k);OGATE,XB(I)::R(H),XR(k)
- B(j);OGATE,P_PINP(D),XS(G)::B(I),XB(j)
- R(h);N_GUARD::B(I),XP(g)
- B(f);N_GUARD::S(G),XP(b)
- P(e);N_GUARD::QAR1(C),XP(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).