MESON Chess Problem Database
Problem Display
PID: 206367 (8/B2p2QK/3PPrp1/R3Prp1/4k1Pn/1B1R3N/2PP1pnb/5N2 w - - 0 1)
Boswell, Edward
3rd Prize, Upsala Allmana Schacksallskap, 1925
#2
14 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rf3
- 2.Rd4#
- 1...Rf4
- 2.Sxg5#
- 1...Rxe5
- 2.Ra4#
- 1...Rxe6
- 2.Bd5#
- 2.Ra4#
- 1...Rf7
- 2.Bd5#
- 2.Ra4#
- 1...Rf8
- 2.Bd5#
- 2.Ra4#
- 1...Bg1
- 2.Sg3#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Sxf2#
- 1...Bxe5
- 2.Bd5#
- 1...Se1
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...Sf4
- 2.Sxf2#
- 2.Re3#
- 1...dxe6
- 2.Qb7#
- 1...Rf3
- Tries
- 1.Kh6?
- 1...Rxe5
- 2.Ra4#
- 1...Rxe6
- 2.Bd5#
- 2.Ra4#
- 1...Bxe5
- 2.Bd5#
- 1...dxe6
- 2.Qb7#
- 1...Se3
- 2.Rxe3#
- 1...Rf3
- 2.Rd4#
- 1...Rf4
- 2.Sxg5#
- 1...Rf7
- 2.Bd5#
- 2.Ra4#
- 1...Rf8
- 2.Bd5#
- 2.Ra4#
- 1...Bg1
- 2.Sg3#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Sxf2#
- 1...Se1
- 2.Re3#
- 1...Sf4
- 2.Sxf2#
- 2.Re3#
- 1...Sf3!
- 1...Rxe5
- 1.Ba2?
- 1...Rxe5
- 2.Ra4#
- 1...Rxe6
- 2.Bd5#
- 2.Ra4#
- 1...Bxe5
- 2.Bd5#
- 1...dxe6
- 2.Qb7#
- 1...Se3
- 2.Rxe3#
- 1...Rf3
- 2.Rd4#
- 1...Rf4
- 2.Sxg5#
- 1...Rf7
- 2.Bd5#
- 2.Ra4#
- 1...Rf8
- 2.Bd5#
- 2.Ra4#
- 1...Bg1
- 2.Sg3#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Sxf2#
- 1...Se1
- 2.Re3#
- 1...Sf4
- 2.Sxf2#
- 2.Re3#
- 1...Sf3!
- 1...Rxe5
- 1.Bb6?
- 1...Rxe5
- 2.Ra4#
- 1...Rxe6
- 2.Bd5#
- 2.Ra4#
- 1...Bxe5
- 2.Bd5#
- 1...dxe6
- 2.Qb7#
- 1...Se3
- 2.Rxe3#
- 1...Rf3
- 2.Rd4#
- 1...Rf4
- 2.Sxg5#
- 1...Rf7
- 2.Bd5#
- 2.Ra4#
- 1...Rf8
- 2.Bd5#
- 2.Ra4#
- 1...Bg1
- 2.Sg3#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Sxf2#
- 1...Se1
- 2.Re3#
- 1...Sf4
- 2.Sxf2#
- 2.Re3#
- 1...Sf3!
- 1...Rxe5
- 1.Rb5?
- 1...Rxe5
- 2.Rb4#
- 1...Rxe6
- 2.Bd5#
- 2.Rb4#
- 1...Bxe5
- 2.Bd5#
- 1...dxe6
- 2.Qb7#
- 1...Se3
- 2.Rxe3#
- 1...Rf3
- 2.Rd4#
- 1...Rf4
- 2.Sxg5#
- 1...Rf7
- 2.Bd5#
- 2.Rb4#
- 1...Rf8
- 2.Bd5#
- 2.Rb4#
- 1...Bg1
- 2.Sg3#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Sxf2#
- 1...Se1
- 2.Re3#
- 1...Sf4
- 2.Sxf2#
- 2.Re3#
- 1...Sf3!
- 1...Rxe5
- 1.Qxf6?
- threat
- 2.Bd5#
- 2.Ra4#
- 1...Rxe5
- 2.Sxf2#
- 2.Rd4#
- 2.Ra4#
- 1...Bxe5
- 2.Bd5#
- 1...dxe6
- 2.Ra4#
- 1...Se3
- 2.Rxe3#
- 1...Sf3
- 2.Bd5#
- 1...Sf4
- 2.Sxf2#
- 2.Re3#
- 2.Ra4#
- 1...Rxf6!
- threat
- 1.Qh8?
- threat
- 2.Qa8#
- 1...Rxe5
- 2.Ra4#
- 1...Se3
- 2.Rxe3#
- 1...Rf8
- 2.Bd5#
- 2.Ra4#
- 1...Sf4
- 2.Sxf2#
- 2.Re3#
- 1...Rf7+!
- threat
- 1.Qxd7?
- threat
- 2.Qa4#
- 2.Qc6#
- 2.Qb7#
- 1...Rxe5
- 2.Ra4#
- 2.Qa4#
- 1...Bxe5
- 2.Bd5#
- 2.Qc6#
- 2.Qb7#
- 1...Se3
- 2.Rxe3#
- 1...Sf3
- 2.Qc6#
- 2.Qb7#
- 1...Sf4
- 2.Sxf2#
- 2.Re3#
- 2.Qa4#
- 1...Rf7+!
- threat
- 1.Kh6?
- Keys
- 1.Rc3!
- 1...Rxe5
- 2.Ra4#
- 1...Rxe6
- 2.Bd5#
- 2.Ra4#
- 1...Bxe5
- 2.Bd5#
- 1...dxe6
- 2.Qb7#
- 1...Se3
- 2.Rxe3#
- 1...Sf3
- 2.d3#
- 1...Rf3
- 2.Rc4#
- 1...Rf4
- 2.Sxg5#
- 1...Rf7
- 2.Bd5#
- 2.Ra4#
- 1...Rf8
- 2.Bd5#
- 2.Ra4#
- 1...Bg1
- 2.Sg3#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Sxf2#
- 1...Se1
- 2.Re3#
- 1...Sf4
- 2.Sxf2#
- 2.Re3#
- 1...Rxe5
- 1.Rc3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(f);SBLOCK::R1(E)
- R(f);N_GUARD,SBLOCK::S(F),XP(g)
- R(f);SBLOCK,XP(I)::R(H)
- B(c);N_GUARD::S(A)
- B(c);N_GUARD::S(A),XB(c)
- B(c);SBLOCK,S_CUTR(f)::S(F),XP(a)
- B(c);SBLOCK,XP(I)::B(D)
- S(b);N_GUARD::R1(E)
- S(b);N_GUARD::R1(E),XS(b)
- P(j);OGATE,XP(K)::QAB(M)
- Tries
- Try
- K(N);P-FLIGHT
- Vars
- R(f);SBLOCK,XP(I)::R(H)
- B(c);SBLOCK,XP(I)::B(D)
- P(j);OGATE,XP(K)::QAB(M)
- S(b);N_GUARD::R1(E),XS(b)
- R(f);SBLOCK::R1(E)
- R(f);N_GUARD,SBLOCK::S(F),XP(g)
- B(c);N_GUARD::S(A)
- B(c);N_GUARD::S(A),XB(c)
- B(c);SBLOCK,S_CUTR(f)::S(F),XP(a)
- S(b);N_GUARD::R1(E)
- Refutation
- S(e);
- Try
- B(D);
- Vars
- R(f);SBLOCK,XP(I)::R(H)
- B(c);SBLOCK,XP(I)::B(D)
- P(j);OGATE,XP(K)::QAB(M)
- S(b);N_GUARD::R1(E),XS(b)
- R(f);SBLOCK::R1(E)
- R(f);N_GUARD,SBLOCK::S(F),XP(g)
- B(c);N_GUARD::S(A)
- B(c);N_GUARD::S(A),XB(c)
- B(c);SBLOCK,S_CUTR(f)::S(F),XP(a)
- S(b);N_GUARD::R1(E)
- Refutation
- S(e);
- Try
- B(L);
- Vars
- R(f);SBLOCK,XP(I)::R(H)
- B(c);SBLOCK,XP(I)::B(D)
- P(j);OGATE,XP(K)::QAB(M)
- S(b);N_GUARD::R1(E),XS(b)
- R(f);SBLOCK::R1(E)
- R(f);N_GUARD,SBLOCK::S(F),XP(g)
- B(c);N_GUARD::S(A)
- B(c);N_GUARD::S(A),XB(c)
- B(c);SBLOCK,S_CUTR(f)::S(F),XP(a)
- S(b);N_GUARD::R1(E)
- Refutation
- S(e);
- Try
- R(H);
- Vars
- R(f);SBLOCK,XP(I)::R(H)
- B(c);SBLOCK,XP(I)::B(D)
- P(j);OGATE,XP(K)::QAB(M)
- S(b);N_GUARD::R1(E),XS(b)
- R(f);SBLOCK::R1(E)
- R(f);N_GUARD,SBLOCK::S(F),XP(g)
- B(c);N_GUARD::S(A)
- B(c);N_GUARD::S(A),XB(c)
- B(c);SBLOCK,S_CUTR(f)::S(F),XP(a)
- S(b);N_GUARD::R1(E)
- Refutation
- S(e);
- Try
- Q(M);XR(h)
- Threat
- DUALS(2)
- Vars
- B(c);XP(I)::B(D)
- P(j);XP(K)::R(H)
- S(b);N_GUARD::R1(E),XS(b)
- S(e);::B(D)
- Refutation
- R(f);XQ(M)
- Try
- Q(M);
- Threat
- QAB(M)
- Vars
- R(f);SBLOCK,XP(I)::R(H)
- S(b);N_GUARD::R1(E),XS(b)
- Refutation
- R(h);CHECK
- Try
- Q(M);XP(j)
- Threat
- DUALS(3)
- Vars
- S(b);N_GUARD::R1(E),XS(b)
- Refutation
- R(h);CHECK
- Try
- Actual
- R(E);
- Vars
- R(f);SBLOCK,XP(I)::R(H)
- B(c);SBLOCK,XP(I)::B(D)
- P(j);OGATE,XP(K)::QAB(M)
- S(b);N_GUARD::R1(E),XS(b)
- S(e);SBLOCK::P(C)
- R(f);SBLOCK::R(E)
- R(f);N_GUARD,SBLOCK::S(F),XP(g)
- B(c);N_GUARD::S(A)
- B(c);N_GUARD::S(A),XB(c)
- B(c);SBLOCK,S_CUTR(f)::S(F),XP(a)
- S(b);N_GUARD::R1(E)
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).