MESON Chess Problem Database
Problem Display
PID: 276906 (1r2r3/1p1P4/2P3Qn/R2Pk3/3NpNP1/2K5/3P4/5R1b w - - 0 1)
Bakke, Nils Adrian
Hjelle, David
Stella Polaris, 1971
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Re6
- 2.Qxe6#
- 1...Rc8
- 2.Qe6#
- 1...Rd8
- 2.Qe6#
- 1...Rf8
- 2.Qe6#
- 1...Rg8
- 2.Qe6#
- 1...Rh8
- 2.Qe6#
- 1...e3
- 2.Sd3#
- 1...bxc6
- 2.Sxc6#
- 1...Re6
- Tries
- 1.Sg2?
- threat
- 2.Qf6#
- 1...Sxg4
- 2.Rf5#
- 1...Re6
- 2.Qxe6#
- 1...Rf8
- 2.Qe6#
- 1...Sf5
- 2.Rxf5#
- 1...Sg8
- 2.Rf5#
- 1...e3
- 2.Sf3#
- 1...b5!
- threat
- 1.Rb5?
- threat
- 2.d6#
- 1...bxc6
- 2.Sxc6#
- 1...Re6
- 2.Qxe6#
- 1...e3
- 2.Sd3#
- 1...Bf3!
- threat
- 1.dxe8S?
- threat
- 2.Qd6#
- 2.Qe6#
- 2.Qf6#
- 2.Qg7#
- 1...Sxg4
- 2.Qf5#
- 2.Qh5#
- 2.Qg5#
- 2.Qd6#
- 2.Qe6#
- 1...Bf3
- 2.Qd6#
- 2.Qf6#
- 1...Rd8
- 2.Qe6#
- 2.Qf6#
- 2.Qg7#
- 1...Sf5
- 2.Qxf5#
- 2.Qe6#
- 2.Qf6#
- 1...Sf7
- 2.Qf5#
- 2.Qe6#
- 2.Qf6#
- 2.Qg7#
- 1...Sg8
- 2.Qf5#
- 2.Qh5#
- 2.Qg5#
- 2.Qd6#
- 2.Qe6#
- 1...e3
- 2.Sd3#
- 2.Qe6#
- 1...Rxe8!
- threat
- 1.d8Q?
- threat
- 2.Qgxe8#
- 2.Qdf6#
- 2.Qc7#
- 2.Qgd6#
- 2.Qgf6#
- 2.Qg7#
- 2.Qdd6#
- 1...Rexd8
- 2.Qe6#
- 1...Sxg4
- 2.Qf5#
- 2.Qh5#
- 2.Qgxe8#
- 2.Qdg5#
- 2.Qc7#
- 2.Qgg5#
- 2.Qgd6#
- 2.Qdd6#
- 1...Bf3
- 2.Qdf6#
- 2.Qc7#
- 2.Qgd6#
- 2.Qgf6#
- 2.Qdd6#
- 1...Rc8
- 2.Qgxe8#
- 2.Qdf6#
- 2.Qgd6#
- 2.Qgf6#
- 2.Qg7#
- 2.Qdd6#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 2.Qgd6#
- 2.Qdd6#
- 1...Rf8
- 2.Qc7#
- 2.Qe7#
- 2.Qgd6#
- 2.Qe6#
- 2.Qdd6#
- 1...Rg8
- 2.Qdf6#
- 2.Qc7#
- 2.Qe7#
- 2.Qgd6#
- 2.Qe6#
- 2.Qgf6#
- 2.Qdd6#
- 1...Rh8
- 2.Qdf6#
- 2.Qc7#
- 2.Qe7#
- 2.Qgd6#
- 2.Qe6#
- 2.Qgf6#
- 2.Qg7#
- 2.Qdd6#
- 1...Sf5
- 2.Qxf5#
- 2.Qdf6#
- 2.Qgf6#
- 1...Sf7
- 2.Qf5#
- 2.Qdf6#
- 2.Qgf6#
- 2.Qg7#
- 1...Sg8
- 2.Qf5#
- 2.Qh5#
- 2.Qdg5#
- 2.Qc7#
- 2.Qgg5#
- 2.Qgd6#
- 2.Qdd6#
- 1...e3
- 2.Sd3#
- 2.Qgxe8#
- 2.Qdf6#
- 2.Qc7#
- 2.Qdd6#
- 1...Rbxd8!
- threat
- 1.d8R?
- threat
- 2.Qd6#
- 2.Qg7#
- 1...Rexd8
- 2.Qe6#
- 1...Sxg4
- 2.Qf5#
- 2.Qg5#
- 2.Qd6#
- 1...Bf3
- 2.Qd6#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 2.Qe6#
- 1...Rg8
- 2.Qd6#
- 2.Qe6#
- 1...Sf5
- 2.Qxf5#
- 1...Sf7
- 2.Qf5#
- 2.Qg7#
- 1...Sg8
- 2.Qf5#
- 2.Qg5#
- 2.Qd6#
- 1...e3
- 2.Sd3#
- 1...Rbxd8!
- threat
- 1.Sg2?
- Keys
- 1.Sb5!
- threat
- 2.Qd6#
- 2.Qg7#
- 1...Sxg4
- 2.Qg5#
- 1...Bf3
- 2.Qd6#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qd6#
- 1...Rf8
- 2.Qd6#
- 2.Qe6#
- 1...Rg8
- 2.Qd6#
- 2.Qe6#
- 1...Sf5
- 2.Qxf5#
- 1...Sf7
- 2.Qf5#
- 2.Qg7#
- 1...Sg8
- 2.Qf5#
- 2.Qg5#
- 2.Qd6#
- 1...e3
- 2.d4#
- threat
- 1.Sb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- R(g);N_GUARD::QAR1(J),XR(g)
- R(g);N_GUARD,P_PINP(I)::QAR1(J)
- R(g);N_GUARD::QAR1(J)
- P(b);N_GUARD::S(E)
- P(e);XP(I)::S(D),XP(e)
- Tries
- Try
- S(E);
- Threat
- QAB1(J)
- Vars
- S(d);N_GUARD,XP(F)::R1(A)
- R(g);N_GUARD::QAR1(J),XR(g)
- R(g);N_GUARD::QAR1(J)
- S(d);N_GUARD::R1(A),XS(d)
- S(d);N_GUARD::R1(A)
- P(b);N_GUARD::S(D)
- Refutation
- P(e);
- Try
- R(G);
- Threat
- R(G)+P(H)
- Vars
- P(e);XP(I)::S(D),XP(e)
- R(g);N_GUARD::QAR1(J),XR(g)
- P(b);N_GUARD::S(E)
- Refutation
- B(a);
- Try
- P(K);XR(g)
- Threat
- DUALS(4)
- Refutation
- R(f);XS(K)
- Try
- P(K);
- Threat
- DUALS(7)
- Vars
- R(g);N_GUARD,XQ(K)::QAR1(J)
- R(g);N_GUARD::QAR1(J),XR(g)
- Refutation
- R(f);XQ(K)
- Try
- P(K);
- Threat
- DUALS(2)
- Vars
- R(g);N_GUARD,XR(K)::QAR1(J)
- B(a);::QAB1(J)
- R(g);N_GUARD::QAR1(J),XR(g)
- R(g);::QAB1(J)
- S(d);N_GUARD::QAR1(J),XS(d)
- P(b);N_GUARD::S(E)
- Refutation
- R(f);XR(K)
- Try
- Actual
- S(D);
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD,XP(F)::QAR2(J)
- B(a);::QAB1(J)
- R(g);N_GUARD::QAR1(J),XR(g)
- R(g);::QAB1(J)
- S(d);N_GUARD::QAR1(J),XS(d)
- P(b);N_GUARD::P(B)
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).