MESON Chess Problem Database
Problem Display
PID: 222771 (3R4/4Q3/B1N1NPp1/2PPBnK1/4k3/4p2R/8/8 w - - 0 1)
Fjellstrom, Zakarias
US Problem Bulletin, 1964
#2
11 + 4
SOLUTION
- SOUND
- Sets
- 1...e2
- 2.Bd3#
- 1...e2
- Tries
- 1.Sed4?
- 1...Sxd4
- 2.Bxd4#
- 1...Sxe7
- 2.Rh4#
- 1...Sg3
- 2.Bxg3#
- 2.Bf4#
- 2.Bc7#
- 2.Bb8#
- 2.Rh4#
- 1...Sh4
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc7#
- 2.Bb8#
- 2.Rxh4#
- 1...Sh6
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Bc7#
- 2.Bb8#
- 1...Sg7
- 2.Rh4#
- 1...e2
- 2.Bd3#
- 1...Sd6!
- 1...Sxd4
- 1.Ba1?
- 1...Sg3
- 2.Sed4#
- 1...Sd6
- 2.Sf4#
- 2.Sc7#
- 1...Sd4
- 2.Sexd4#
- 1...Sh4
- 2.Sed4#
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 1...Sh6
- 2.Sed4#
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 1...Sg7
- 2.Sxg7#
- 1...e2
- 2.Bd3#
- 1...Sxe7!
- 1...Sg3
- 1.Bb2?
- 1...Sg3
- 2.Sed4#
- 1...Sd6
- 2.Sf4#
- 2.Sc7#
- 1...Sd4
- 2.Sexd4#
- 1...Sh4
- 2.Sed4#
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 1...Sh6
- 2.Sed4#
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 1...Sg7
- 2.Sxg7#
- 1...e2
- 2.Bd3#
- 1...Sxe7!
- 1...Sg3
- 1.Bh2?
- 1...Sg3
- 2.Sed4#
- 1...Sd6
- 2.Sf4#
- 2.Sc7#
- 1...Sd4
- 2.Sexd4#
- 1...Sh4
- 2.Sed4#
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 1...Sh6
- 2.Sed4#
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 1...Sg7
- 2.Sxg7#
- 1...e2
- 2.Bd3#
- 1...Sxe7!
- 1...Sg3
- 1.Bc3?
- 1...Sg3
- 2.Sed4#
- 1...Sd6
- 2.Sf4#
- 2.Sc7#
- 1...Sd4
- 2.Sexd4#
- 1...Sh4
- 2.Sed4#
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 1...Sh6
- 2.Sed4#
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 1...Sg7
- 2.Sxg7#
- 1...e2
- 2.Bd3#
- 1...Sxe7!
- 1...Sg3
- 1.Bd4?
- 1...Sxd4
- 2.Sexd4#
- 1...Sxe7
- 2.Rxe3#
- 1...Sd6
- 2.Sf4#
- 2.Sc7#
- 1...Sh4
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 2.Rxe3#
- 1...Sh6
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 2.Rxe3#
- 1...Sg7
- 2.Sxg7#
- 2.Rxe3#
- 1...e2
- 2.Bd3#
- 1...Sg3!
- 1...Sxd4
- 1.Bc7?
- 1...Sg3
- 2.Sed4#
- 1...Sd6
- 2.Sf4#
- 1...Sd4
- 2.Sexd4#
- 1...Sh4
- 2.Sed4#
- 2.Sf4#
- 2.Sg7#
- 2.Sf8#
- 1...Sh6
- 2.Sed4#
- 2.Sf4#
- 2.Sg7#
- 2.Sf8#
- 1...Sg7
- 2.Sxg7#
- 1...e2
- 2.Bd3#
- 1...Sxe7!
- 1...Sg3
- 1.Bb8?
- 1...Sg3
- 2.Sed4#
- 1...Sd6
- 2.Sf4#
- 2.Sc7#
- 1...Sd4
- 2.Sexd4#
- 1...Sh4
- 2.Sed4#
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 1...Sh6
- 2.Sed4#
- 2.Sf4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 1...Sg7
- 2.Sxg7#
- 1...e2
- 2.Bd3#
- 1...Sxe7!
- 1...Sg3
- 1.Sed4?
- Keys
- 1.Bf4!
- 1...Sxe7
- 2.Rxe3#
- 1...Sg3
- 2.Sed4#
- 1...Sd6
- 2.Sc7#
- 1...Sd4
- 2.Sexd4#
- 2.Rxe3#
- 1...Sh4
- 2.Sed4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 2.Rxe3#
- 1...Sh6
- 2.Sed4#
- 2.Sc7#
- 2.Sg7#
- 2.Sf8#
- 2.Rxe3#
- 1...Sg7
- 2.Sxg7#
- 2.Rxe3#
- 1...e2
- 2.Bd3#
- 1...Sxe7
- 1.Bf4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- P(a);::B(F)
- Tries
- Try
- S(H);
- Vars
- S(c);OGATE,XS(H)::QAR(J)+B(D),XS(c)
- S(c);N_GUARD,XQ(J)::R(A)
- S(c);N_GUARD::R(A)
- P(a);::B(F)
- Refutation
- S(c);
- Try
- B(D);
- Vars
- S(c);N_GUARD::QAR(J)+S(H)
- S(c);N_GUARD::QAR(J)+S(H),XS(c)
- P(a);::B(F)
- Refutation
- S(c);XQ(J)
- Try
- B(D);
- Vars
- S(c);N_GUARD::QAR(J)+S(H)
- S(c);N_GUARD::QAR(J)+S(H),XS(c)
- P(a);::B(F)
- Refutation
- S(c);XQ(J)
- Try
- B(D);
- Vars
- S(c);N_GUARD::QAR(J)+S(H)
- S(c);N_GUARD::QAR(J)+S(H),XS(c)
- P(a);::B(F)
- Refutation
- S(c);XQ(J)
- Try
- B(D);
- Vars
- S(c);N_GUARD::QAR(J)+S(H)
- S(c);N_GUARD::QAR(J)+S(H),XS(c)
- P(a);::B(F)
- Refutation
- S(c);XQ(J)
- Try
- B(D);
- Vars
- S(c);XB(D)::QAR(J)+S(H),XS(c)
- S(c);N_GUARD,XQ(J)::R1(A),XP(a)
- P(a);::B(F)
- Refutation
- S(c);
- Try
- B(D);
- Vars
- S(c);N_GUARD::QAR(J)+S(H)
- S(c);N_GUARD::QAR(J)+S(H),XS(c)
- P(a);::B(F)
- Refutation
- S(c);XQ(J)
- Try
- B(D);
- Vars
- S(c);N_GUARD::QAR(J)+S(H)
- S(c);N_GUARD::QAR(J)+S(H),XS(c)
- P(a);::B(F)
- Refutation
- S(c);XQ(J)
- Try
- Actual
- B(D);
- Vars
- S(c);N_GUARD,XQ(J)::R1(A),XP(a)
- S(c);N_GUARD::QAR(J)+S(H)
- P(a);::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).