MESON Chess Problem Database
Problem Display
PID: 199314 (4r3/B3nQ2/1R2NPB1/1P2k1K1/RNp3p1/7b/qp1P1P2/8 w - - 0 1)
Hjelle, David
Springaren, 1961
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Rb8
- 2.Bxb8#
- 1...Sg8
- 2.Qc7#
- 1...c3
- 2.d4#
- 1...g3
- 2.f4#
- 1...Rb8
- Tries
- 1.Sf4?
- threat
- 2.Re6#
- 1...Kd4
- 2.Re6#
- 1...Sxg6
- 2.Qd5#
- 1...Sf5
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...c3
- 2.Sbd3#
- 1...g3!
- threat
- 1.Sc7?
- threat
- 2.Re6#
- 1...Kd4
- 2.Re6#
- 1...Sxg6
- 2.Qd5#
- 1...Sf5
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...c3
- 2.Sd3#
- 1...g3!
- threat
- 1.Sg7?
- threat
- 2.Re6#
- 1...Kd4
- 2.Re6#
- 1...Sxg6
- 2.Qd5#
- 1...Sf5
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...c3
- 2.Sd3#
- 1...g3!
- threat
- 1.Sd8?
- threat
- 2.Re6#
- 1...Kd4
- 2.Re6#
- 1...Sxg6
- 2.Qd5#
- 1...Sf5
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...c3
- 2.Sd3#
- 1...g3!
- threat
- 1.Sf8?
- threat
- 2.Re6#
- 1...Kd4
- 2.Re6#
- 1...Sxg6
- 2.Qd5#
- 1...Sf5
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...c3
- 2.Sd3#
- 1...g3!
- threat
- 1.fxe7?
- threat
- 2.Qf4#
- 2.Qf5#
- 2.Qf6#
- 2.Qg7#
- 1...Rxe7
- 2.Qf4#
- 2.Qf5#
- 2.Qf6#
- 1...b1Q
- 2.Qf4#
- 2.Qf6#
- 2.Qg7#
- 1...b1B
- 2.Qf4#
- 2.Qf6#
- 2.Qg7#
- 1...g3
- 2.Qf4#
- 2.Qf6#
- 2.Qg7#
- 2.f4#
- 1...Qb1
- 2.Qf4#
- 2.Qf6#
- 2.Qg7#
- 1...Rg8
- 2.Qf4#
- 2.Qf5#
- 2.Qf6#
- 1...Rf8!
- threat
- 1.Sf4?
- Keys
- 1.Sd4!
- threat
- 2.Re6#
- 1...Kxd4
- 2.Re6#
- 1...Sxg6
- 2.Qd5#
- 1...Sf5
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...c3
- 2.Sd3#
- 1...g3
- 2.Sf3#
- threat
- 1.Sd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- R(h);N_GUARD::B(K),XR(h)
- S(g);OGATE::QAB(L)
- P(d);N_GUARD::P(A)
- P(e);N_GUARD::P(B)
- Tries
- Try
- S(H);
- Threat
- R1(G)
- Vars
- K(f);S_FLIGHT::B(K)+R(G)
- S(g);N_GUARD,XB(J)::QAR1(L)
- S(g);N_GUARD::QAR1(L)
- S(g);N_GUARD::QAR1(L),XS(g)
- P(d);N_GUARD::S(D)
- Refutation
- P(e);
- Try
- S(H);
- Threat
- R1(G)
- Vars
- K(f);S_FLIGHT::B(K)+R(G)
- S(g);N_GUARD,XB(J)::QAR1(L)
- S(g);N_GUARD::QAR1(L)
- S(g);N_GUARD::QAR1(L),XS(g)
- P(d);N_GUARD::S(D)
- Refutation
- P(e);
- Try
- S(H);
- Threat
- R1(G)
- Vars
- K(f);S_FLIGHT::B(K)+R(G)
- S(g);N_GUARD,XB(J)::QAR1(L)
- S(g);N_GUARD::QAR1(L)
- S(g);N_GUARD::QAR1(L),XS(g)
- P(d);N_GUARD::S(D)
- Refutation
- P(e);
- Try
- S(H);
- Threat
- R1(G)
- Vars
- K(f);S_FLIGHT::B(K)+R(G)
- S(g);N_GUARD,XB(J)::QAR1(L)
- S(g);N_GUARD::QAR1(L)
- S(g);N_GUARD::QAR1(L),XS(g)
- P(d);N_GUARD::S(D)
- Refutation
- P(e);
- Try
- S(H);
- Threat
- R1(G)
- Vars
- K(f);S_FLIGHT::B(K)+R(G)
- S(g);N_GUARD,XB(J)::QAR1(L)
- S(g);N_GUARD::QAR1(L)
- S(g);N_GUARD::QAR1(L),XS(g)
- P(d);N_GUARD::S(D)
- Refutation
- P(e);
- Try
- P(I);XS(g)
- Threat
- DUALS(4)
- Refutation
- R(h);
- Try
- Actual
- S(H);
- Threat
- R1(G)
- Vars
- K(f);S_FLIGHT,XS(H)::B(K)+R(G)
- S(g);N_GUARD,XB(J)::QAR1(L)
- S(g);N_GUARD::QAR1(L)
- S(g);N_GUARD::QAR1(L),XS(g)
- P(d);N_GUARD::S(D)
- P(e);N_GUARD::S(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).