MESON Chess Problem Database
Problem Display
PID: 262933 (8/P4N2/R1p1n3/3k1P1Q/1Pn1p1R1/2K5/8/4N3 w - - 0 1)
Lipton, Michael
3rd Prize, NBvP-30 JT, 1961
#2
9 + 5
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...e3
- 2.Qh1#
- 1...c5
- 2.a8Q#
- 2.a8B#
- 1...e3
- Tries
- 1.Sg2?
- 1...Sb2
- 2.Se3#
- 1...Sd2
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sa5
- 2.Se3#
- 1...Se5
- 2.Se3#
- 1...Sb6
- 2.Se3#
- 1...Sd6
- 2.Se3#
- 1...Sd4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sc5
- 2.Sf4#
- 1...Sg5
- 2.Sf4#
- 1...Sc7
- 2.Sf4#
- 1...Sg7
- 2.Sf4#
- 1...Sd8
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...c5
- 2.a8Q#
- 2.a8B#
- 1...e3!
- 1...Sb2
- 1.Ra5+?
- 1...Sc5
- 2.Rxc5#
- 1...c5
- 2.a8Q#
- 2.a8B#
- 1...Sxa5!
- 1...Sc5
- 1.Rxc6?
- 1...Sb2
- 2.Rd6#
- 1...Sd2
- 2.Rd6#
- 1...Sa3
- 2.Rd6#
- 1...Se3
- 2.Rd6#
- 1...Sa5
- 2.Rd6#
- 1...Se5
- 2.Rd6#
- 1...Sb6
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sd4
- 2.Rc5#
- 1...Sf4
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Sg5
- 2.Rc5#
- 1...Sc7
- 2.Rc5#
- 1...Sg7
- 2.Rc5#
- 1...Sd8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...e3
- 2.Qh1#
- 1...Kxc6!
- 1...Sb2
- 1.Qh8?
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sa3
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Sd4
- 2.Qxd4#
- 1...Sf4
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sf8
- 2.Qd4#
- 1...e3
- 2.Qh1#
- 1...c5
- 2.Qa8#
- 2.a8Q#
- 2.a8B#
- 1...Sg7!
- 1...Sb2
- 1.fxe6+?
- 1...Se5
- 2.Qxe5#
- 1...Kxe6!
- 1...Se5
- 1.f6+?
- 1...Se5
- 2.Qxe5#
- 1...Sg5!
- 1...Se5
- 1.a8S?
- 1...Sb2
- 2.Sb6#
- 1...Sd2
- 2.Sb6#
- 1...Sa3
- 2.Sb6#
- 1...Se3
- 2.Sb6#
- 1...Sa5
- 2.Sb6#
- 1...Se5
- 2.Sb6#
- 1...Sb6
- 2.Sxb6#
- 1...Sd6
- 2.Sb6#
- 1...Sd4
- 2.Sc7#
- 1...Sf4
- 2.Sc7#
- 1...Sc5
- 2.Sc7#
- 1...Sg5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sg7
- 2.Sc7#
- 1...Sd8
- 2.Sc7#
- 1...Sf8
- 2.Sc7#
- 1...e3
- 2.Qh1#
- 1...c5!
- 1...Sb2
- 1.Sg2?
- Keys
- 1.Rxe4!
- 1...Kxe4
- 2.Qf3#
- 1...Sb2
- 2.Re5#
- 1...Sd2
- 2.Re5#
- 1...Sa3
- 2.Re5#
- 1...Se3
- 2.Re5#
- 1...Sa5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sb6
- 2.Re5#
- 1...Sd6
- 2.Re5#
- 1...Sd4
- 2.Rxd4#
- 1...Sf4
- 2.Rd4#
- 1...Sc5
- 2.Rd4#
- 1...Sg5
- 2.Rd4#
- 1...Sc7
- 2.Rd4#
- 1...Sg7
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...Sf8
- 2.Rd4#
- 1...c5
- 2.a8Q#
- 2.a8B#
- 1...Kxe4
- 1.Rxe4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 17
- REMOVED MATES = 1
- Sets
- P(b);OGATEB::QAB(F)
- P(d);::P=Q
- Tries
- Try
- S(A);
- Vars
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(e);N_GUARD::S(A)
- S(e);N_GUARD::S(A),XS(e)
- P(d);::P=Q
- Refutation
- P(b);
- Try
- R(G);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::R1(G),XS(e)
- P(d);P_SPINP(d),S_CUTS(a),S_CUTS(e)::P=Q
- Refutation
- S(a);XR(G)
- Try
- R(G);XP(d)
- Vars
- S(a);N_GUARD::R1(G)
- S(a);N_GUARD::R1(G),XS(a)
- S(e);N_GUARD::R1(G)
- S(e);N_GUARD::R1(G),XS(e)
- P(b);OGATEB::QAB(F)
- Refutation
- K(c);S_FLIGHT,XR(G)
- Try
- Q(F);
- Vars
- S(a);N_GUARD::QAR1(F)
- S(a);N_GUARD::QAR1(F),XS(a)
- S(e);N_GUARD::QAR1(F),XS(e)
- S(e);N_GUARD::QAR1(F)
- P(b);OGATEB::QAB(F)
- Refutation
- S(e);
- Try
- P(E);CHECK,XS(e)
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR1(F),XS(a)
- Refutation
- K(c);P_SPINP(d),S_FLIGHT,XP(E)
- Try
- P(E);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR1(F),XS(a)
- Refutation
- S(e);P_SPINS(e)
- Try
- P(H);
- Vars
- S(a);N_GUARD::S(H)
- S(a);N_GUARD::S(H),XS(a)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- P(b);OGATEB::QAB(F)
- Refutation
- P(d);
- Try
- Actual
- R(D);XP(b)
- Vars
- K(c);OGATEB,S_FLIGHT,XR(D)::QAB1(F)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(e);N_GUARD::R1(D),XS(e)
- S(e);N_GUARD::R1(D)
- P(d);::P=Q
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).