MESON Chess Problem Database
Problem Display
PID: 56662 (8/5R2/8/3pp3/B2NkBP1/8/2P1NRP1/1K1b4 w - - 0 1)
Backe, Odd Erik
1st Prize, Ojanen-50 JT, 1966
#2
10 + 4
| 3772 | FIDE Album (1965-1967) | 1976 |
SOLUTION
- SOUND
- Sets
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxc2+
- Tries
- 1.Ka1?
- 1...Bxc2
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2
- 1.Kc1?
- 1...Bxc2
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2
- 1.Ka2?
- 1...Bxc2
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2
- 1.Kb2?
- 1...Bxc2
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2
- 1.Sb3?
- threat
- 2.Sc3#
- 2.Sg3#
- 2.Sd2#
- 2.Sc5#
- 1...Bxe2
- 2.Rxe2#
- 1...exf4
- 2.Re7#
- 1...d4
- 2.Bc6#
- 1...Bxc2+!
- threat
- 1.Sb5?
- threat
- 2.Sec3#
- 2.Sg3#
- 2.Sbc3#
- 2.Sd6#
- 1...Bxc2+
- 2.Bxc2#
- 1...Bxe2
- 2.Rxe2#
- 1...exf4
- 2.Re7#
- 1...d4!
- threat
- 1.Sf5?
- threat
- 2.Sc3#
- 2.Seg3#
- 2.Sfg3#
- 2.Sd6#
- 1...Bxc2+
- 2.Bxc2#
- 1...exf4
- 2.Re7#
- 1...d4
- 2.Bc6#
- 1...Bxe2!
- threat
- 1.Sc6?
- threat
- 2.Sc3#
- 2.Sg3#
- 1...Bxc2+
- 2.Bxc2#
- 1...Bxe2
- 2.Rxe2#
- 1...exf4
- 2.Re7#
- 1...d4!
- threat
- 1.Se6?
- threat
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 1...Bxc2+
- 2.Bxc2#
- 1...Bxe2
- 2.Rxe2#
- 1...d4
- 2.Bc6#
- 1...exf4!
- threat
- 1.Bb3?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Bc1?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Bd2?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Bg5?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Bh6?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Rf1?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Rf3?
- threat
- 2.Re3#
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- threat
- 1.Rf6?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re6#
- 1...exf4
- 2.Re6#
- 1...Bxe2!
- 1...Bxc2+
- 1.Ra7?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Rb7?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Rc7?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Rd7?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Re7?
- threat
- 2.Rxe5#
- 1...Bxc2+
- 2.Bxc2#
- 1...Bxe2!
- threat
- 1.Rg7?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Rh7?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Rf8?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 2.Re8#
- 1...exf4
- 2.Re8#
- 1...Bxe2!
- 1...Bxc2+
- 1.g3?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Re7#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.g5?
- 1...Bxc2+
- 2.Bxc2#
- 1...exd4
- 2.Sg3#
- 1...exf4
- 2.Re7#
- 1...Bxe2!
- 1...Bxc2+
- 1.Ka1?
- Keys
- 1.Sf3!
- threat
- 2.Sc3#
- 2.Sg3#
- 2.Sd2#
- 2.Sg5#
- 1...Bxc2+
- 2.Bxc2#
- 1...Bxe2
- 2.Rxe2#
- 1...exf4
- 2.Re7#
- 1...d4
- 2.Bc6#
- threat
- 1.Sf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- B(a);OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- K(A);P-FLIGHT
- Vars
- B(a);OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- K(A);S_FLIGHT
- Vars
- B(a);OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- K(A);P-FLIGHT
- Vars
- B(a);OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- S(G);
- Threat
- DUALS(4)
- Vars
- B(a);OGATE,XS(C)::R(D),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- P(c);OGATEB::B(F)
- Refutation
- B(a);CHECK,XP(B)
- Try
- S(G);
- Threat
- DUALS(4)
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- B(a);OGATE,XS(C)::R(D),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- P(c);
- Try
- S(G);
- Threat
- DUALS(4)
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- P(c);OGATEB::B(F)
- Refutation
- B(a);XS(C)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- B(a);OGATE,XS(C)::R(D),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- P(c);
- Try
- S(G);
- Threat
- DUALS(4)
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- B(a);OGATE,XS(C)::R(D),XB(a)
- P(c);OGATEB::B(F)
- Refutation
- P(d);XB(H)
- Try
- B(F);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- B(H);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XS(G)::R(J)
- Refutation
- B(a);XS(C)
- Try
- B(H);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XS(G)::R(J)
- Refutation
- B(a);XS(C)
- Try
- B(H);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XS(G)::R(J)
- Refutation
- B(a);XS(C)
- Try
- B(H);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XS(G)::R(J)
- Refutation
- B(a);XS(C)
- Try
- R(D);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- R(D);
- Threat
- R1(D)
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- R(J);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- R(J);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- R(J);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- R(J);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- R(J);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- R(J);P_PINP(d)
- Threat
- R1(J),XP(d)
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- Refutation
- B(a);XS(C)
- Try
- R(J);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- R(J);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- R(J);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- P(E);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);OGATEB,XS(G)::R(J)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- P(I);
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- P(d);SBLOCK,XS(G)::S(C)
- P(d);OGATEB,XB(H)::R(J)
- Refutation
- B(a);XS(C)
- Try
- Actual
- S(G);
- Threat
- DUALS(4)
- Vars
- B(a);CHECK,OGATE,XP(B)::B(F),XB(a)
- B(a);OGATE,XS(C)::R(D),XB(a)
- P(d);OGATEB,XB(H)::R(J)
- P(c);OGATEB::B(F)
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).