MESON Chess Problem Database
Problem Display
PID: 17478 (1N4bK/6p1/qn1R2Q1/4kp2/1R3p2/8/3n4/2rrN2B w - - 0 1)
Bukne, Roald
2nd Place, Arbejder-Skak, 1947
#2
7 + 10
SOLUTION
- SOUND
- Sets
- 1...Qd3
- 2.Sxd3#
- 1...Qb7
- 2.Sd3#
- 1...Qc8
- 2.Sd3#
- 1...Qa1
- 2.Sd3#
- 1...Qa2
- 2.Sd3#
- 1...Qa4
- 2.Sd3#
- 1...Qa5
- 2.Sd3#
- 1...Qa7
- 2.Sd3#
- 1...Qa8
- 2.Sd3#
- 1...Ra1
- 2.Sc6#
- 1...Rb1
- 2.Sc6#
- 1...Rc4
- 2.Sd3#
- 1...Rc6
- 2.Sxc6#
- 1...Bc4
- 2.Sc6#
- 1...Be6
- 2.Rxe6#
- 2.Qxe6#
- 1...Bh7
- 2.Re6#
- 2.Qe6#
- 1...Sb1
- 2.Sf3#
- 1...Sf1
- 2.Sf3#
- 1...Sb3
- 2.Sf3#
- 1...Sf3
- 2.Sxf3#
- 1...Sdc4
- 2.Sc6#
- 1...Se4
- 2.Sf3#
- 1...Sa4
- 2.Sd7#
- 1...Sbc4
- 2.Sd3#
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sa8
- 2.Sd7#
- 1...Sc8
- 2.Sd7#
- 1...Qd3
- Tries
- 1.Rc4?
- threat
- 2.Sd3#
- 2.Sc6#
- 1...Rxc4
- 2.Sd3#
- 1...Rxe1
- 2.Sc6#
- 1...Bxc4
- 2.Sc6#
- 1...Sdxc4
- 2.Sc6#
- 1...Sbxc4
- 2.Sd3#
- 2.Sd7#
- 1...Be6
- 2.Rxe6#
- 2.Qxe6#
- 1...Qb5
- 2.Sd3#
- 1...Qb7
- 2.Sd3#
- 1...Qc8
- 2.Sd3#
- 1...Qa3
- 2.Sc6#
- 1...Qa4
- 2.Sd3#
- 1...Qa8
- 2.Sd3#
- 1...Rc3
- 2.Sc6#
- 1...Bd5
- 2.Sd3#
- 1...Sb1
- 2.Sf3#
- 2.Sc6#
- 1...Sf1
- 2.Sf3#
- 2.Sc6#
- 1...Sb3
- 2.Sf3#
- 2.Sc6#
- 1...Sf3
- 2.Sxf3#
- 2.Sc6#
- 1...Se4
- 2.Sf3#
- 2.Sc6#
- 1...Sa4
- 2.Sd3#
- 2.Sd7#
- 1...Sd5
- 2.Sd3#
- 2.Sd7#
- 1...Sd7
- 2.Sd3#
- 2.Sxd7#
- 1...Sa8
- 2.Sd3#
- 2.Sd7#
- 1...Sc8
- 2.Sd3#
- 2.Sd7#
- 1...Qxc4!
- threat
- 1.Re4+?
- 1...Sxe4
- 2.Sf3#
- 1...fxe4!
- 1...Sxe4
- 1.Rd3?
- threat
- 2.Qd6#
- 1...Qxd3
- 2.Sxd3#
- 1...Rc6
- 2.Sxc6#
- 1...Be6
- 2.Qxg7#
- 1...Sdc4
- 2.Sc6#
- 1...Se4
- 2.Sf3#
- 1...Sa4
- 2.Sd7#
- 1...Sbc4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sa8
- 2.Sd7#
- 1...Sc8
- 2.Sd7#
- 1...Bd5!
- threat
- 1.Rd5+?
- 1...Sxd5
- 2.Sd7#
- 1...Bxd5!
- 1...Sxd5
- 1.Qe8+?
- 1...Be6
- 2.Rxe6#
- 2.Qxe6#
- 1...Kxd6!
- 1...Be6
- 1.Rc4?
- Keys
- 1.Rd8!
- threat
- 2.Qd6#
- 1...Qd3
- 2.Sxd3#
- 1...Rc6
- 2.Sxc6#
- 1...Be6
- 2.Qxg7#
- 1...Sb1
- 2.Sf3#
- 1...Sf1
- 2.Sf3#
- 1...Sb3
- 2.Sf3#
- 1...Sf3
- 2.Sxf3#
- 1...Sdc4
- 2.Sc6#
- 1...Se4
- 2.Sf3#
- 1...Sa4
- 2.Sd7#
- 1...Sbc4
- 2.Sd3#
- 1...Sd5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sa8
- 2.Sd7#
- 1...Sc8
- 2.Sd7#
- threat
- 1.Rd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- Q(g);N_GUARD::S(A),XQ(g)
- Q(g);N_GUARD::S(A)
- R(a);N_GUARD::S(F)
- R(a);S_CUTQ(g)::S(A)
- R(a);N_GUARD::S(F),XR(a)
- B(j);S_CUTR(a)::S(F)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- S(c);S_CUTR(a)::S(F)
- S(h);N_GUARD::S(F)
- S(h);N_GUARD::S(F),XS(h)
- Tries
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(a);XR(C)::S(A)
- R(b);XS(A)::S(F)
- B(j);XR(C)::S(F)
- S(c);XR(C)::S(F)
- Q(g);::S(A)
- Q(g);::S(F)
- R(a);::S(F)
- B(j);::S(A)
- Refutation
- Q(g);XR(C)
- Try
- R(C);CHECK
- Vars
- S(c);SBLOCK,XR(C)::S(A)
- Refutation
- P(f);XR(C)
- Try
- R(D);
- Threat
- QAB1(E)
- Vars
- Q(g);XR(D)::S(A),XQ(g)
- R(a);N_GUARD::S(F),XR(a)
- B(j);SBLOCK::QAB(E),XP(i)
- S(c);S_CUTR(a)::S(F)
- S(c);N_GUARD::S(A)
- S(h);N_GUARD::S(F)
- S(h);N_GUARD::S(F),XS(h)
- Refutation
- B(j);
- Try
- R(D);CHECK
- Vars
- S(h);XR(D)::S(F)
- Refutation
- B(j);XR(D)
- Try
- Q(E);CHECK
- Refutation
- K(e);S_FLIGHT,XR(D)
- Try
- Actual
- R(D);
- Threat
- QAB1(E)
- Vars
- Q(g);N_GUARD::S(A),XQ(g)
- R(a);N_GUARD::S(F),XR(a)
- B(j);SBLOCK::QAB(E),XP(i)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- S(c);S_CUTR(a)::S(F)
- S(h);N_GUARD::S(F)
- S(h);S_CUTQ(g)::S(A)
- S(h);N_GUARD::S(F),XS(h)
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).