MESON Chess Problem Database
Problem Display
PID: 276632 (2R1R3/8/2N1N3/p2k2p1/Pn3nP1/BKP2P2/8/6BQ w - - 0 1)
Obierak, Wladyslaw
Stella Polaris, 1970
#2
12 + 5
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.c4#
- 1...Sc2
- 2.c4#
- 1...Sbd3
- 2.c4#
- 1...Sa6
- 2.c4#
- 1...Sxc6
- 2.Sc7#
- 1...Sa2
- Tries
- 1.Sxf4+?
- 1...Kd6
- 2.Red8#
- 1...gxf4!
- 1...Kd6
- 1.Sxg5?
- threat
- 2.Red8#
- 1...Kd6
- 2.Red8#
- 1...Sxc6
- 2.c4#
- 1...Se6!
- threat
- 1.Sg7?
- threat
- 2.Red8#
- 1...Kd6
- 2.Red8#
- 1...Sxc6
- 2.c4#
- 1...Se6!
- threat
- 1.Sf8?
- threat
- 2.Red8#
- 1...Kd6
- 2.Red8#
- 1...Sxc6
- 2.c4#
- 1...Se6!
- threat
- 1.Bc5?
- threat
- 2.c4#
- 1...Sxc6
- 2.Sc7#
- 1...Sxe6!
- threat
- 1.Qh2?
- 1...Sxc6
- 2.Sc7#
- 1...Sxe6
- 2.Se7#
- 2.Qe5#
- 2.c4#
- 1...Sa2
- 2.c4#
- 1...Sc2
- 2.c4#
- 1...Sbd3
- 2.c4#
- 1...Sa6
- 2.c4#
- 1...Se2
- 2.Qe5#
- 2.c4#
- 1...Sg2
- 2.Qe5#
- 2.c4#
- 1...Sfd3
- 2.c4#
- 1...Sh3
- 2.Qe5#
- 2.c4#
- 1...Sh5
- 2.Qe5#
- 2.c4#
- 1...Sg6
- 2.c4#
- 1...Kd6!
- 1...Sxc6
- 1.Qh6?
- threat
- 2.Sc7#
- 2.Red8#
- 1...Kd6
- 2.Red8#
- 1...Sxc6
- 2.Sc7#
- 1...Sxe6
- 2.Qxe6#
- 1...Sa6
- 2.Red8#
- 2.Qxg5#
- 2.c4#
- 1...Sg6!
- threat
- 1.Qh7?
- threat
- 2.Qd7#
- 1...Sxc6
- 2.Sc7#
- 2.Qe4#
- 1...Kd6!
- threat
- 1.Qh8?
- threat
- 2.Qd4#
- 2.Qe5#
- 1...Sxc6
- 2.Sc7#
- 2.c4#
- 1...Sxe6
- 2.Qe5#
- 1...Sc2
- 2.Qe5#
- 2.c4#
- 1...Sbd3
- 2.Qd4#
- 2.c4#
- 1...Se2
- 2.Qe5#
- 1...Sfd3
- 2.Qd4#
- 1...Sg6
- 2.Qd4#
- 1...Kd6!
- threat
- 1.Sxf4+?
- Keys
- 1.Bh2!
- 1...Kd6
- 2.Qd1#
- 1...Sxc6
- 2.Sc7#
- 1...Sxe6
- 2.Se7#
- 1...Sa2
- 2.c4#
- 1...Sc2
- 2.c4#
- 1...Sbd3
- 2.c4#
- 1...Sa6
- 2.c4#
- 1...Se2
- 2.c4#
- 1...Sg2
- 2.c4#
- 1...Sfd3
- 2.c4#
- 1...Sh3
- 2.c4#
- 1...Sh5
- 2.c4#
- 1...Sg6
- 2.c4#
- 1...Kd6
- 1.Bh2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- S(a);::P(E)
- S(a);SBLOCK,XS(I)::S(J)
- Tries
- Try
- S(J);CHECK,XS(b)
- Vars
- K(d);P-FLIGHT,P_SPINS(a)::R(L)
- Refutation
- P(e);XS(J)
- Try
- S(J);XP(e)
- Threat
- R(L)
- Vars
- K(d);P-FLIGHT,P_SPINS(a)::R(L)
- S(a);XS(I)::P(E)
- Refutation
- S(b);
- Try
- S(J);
- Threat
- R(L)
- Vars
- K(d);P-FLIGHT,P_SPINS(a)::R(L)
- S(a);XS(I)::P(E)
- Refutation
- S(b);
- Try
- S(J);
- Threat
- R(L)
- Vars
- K(d);P-FLIGHT,P_SPINS(a)::R(L)
- S(a);XS(I)::P(E)
- Refutation
- S(b);
- Try
- B(A);
- Threat
- P(E)
- Vars
- S(a);SBLOCK,XS(I)::S(J)
- Refutation
- S(b);XS(J)
- Try
- Q(B);
- Vars
- S(a);SBLOCK,XS(I)::S(J)
- S(a);::P(E)
- S(b);::P(E)
- Refutation
- K(d);P-FLIGHT,P_SPINS(a)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- K(d);P-FLIGHT,P_SPINS(a)::R(L)
- S(a);XS(I)::S(J)
- S(b);OGATE,XS(J)::QAB1(B),XS(b)
- Refutation
- S(b);
- Try
- Q(B);
- Threat
- QAR2(B)
- Refutation
- K(d);P-FLIGHT,P_SPINS(a)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(b);XS(J)::QAR1(B)
- S(b);::QAR1(B)
- Refutation
- K(d);P-FLIGHT,P_SPINS(a)
- Try
- Actual
- B(A);
- Vars
- K(d);P-FLIGHT,P_SPINS(a),S_CUTS(b)::QAR(B)
- S(a);SBLOCK,XS(I)::S(J)
- S(b);SBLOCK,XS(J)::S(I)
- S(a);::P(E)
- S(b);::P(E)
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).