MESON Chess Problem Database
Problem Display
PID: 263024 (8/6N1/2p4r/2PPpp1p/4Pk1P/4N2K/2nR1P2/2Bn1R1B w - - 0 1)
Lipton, Michael
Postsjakk, 1963
#2
12 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rd6
- 2.Sxh5#
- 1...Re6
- 2.Sxh5#
- 2.Sxe6#
- 1...Rf6
- 2.Sxh5#
- 1...Rg6
- 2.Sxh5#
- 1...Rh7
- 2.Se6#
- 1...Rh8
- 2.Se6#
- 1...Sxf2+
- 2.Rdxf2#
- 1...cxd5
- 2.Sxd5#
- 1...Rd6
- Tries
- 1.Sxd1?
- threat
- 2.Rxc2#
- 1...Sa1
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rd3#
- 2.Rd4#
- 1...Se1
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rd3#
- 2.Rd4#
- 1...Sa3
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rd3#
- 2.Rd4#
- 1...Se3
- 2.fxe3#
- 1...Sb4
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rd3#
- 2.Rd4#
- 1...Sd4
- 2.Ra2#
- 2.Rb2#
- 2.Rc2#
- 2.Re2#
- 2.Rd3#
- 2.Rxd4#
- 1...fxe4!
- threat
- 1.Sxc2?
- threat
- 2.Rdxd1#
- 1...Sxf2+
- 2.Rfxf2#
- 2.Rdxf2#
- 1...Sb2
- 2.Rdd1#
- 2.Re2#
- 2.Rd3#
- 2.Rd4#
- 1...Sc3
- 2.Rdd1#
- 2.Re2#
- 2.Rd3#
- 2.Rd4#
- 1...Se3
- 2.fxe3#
- 1...fxe4!
- threat
- 1.Sg2+?
- 1...Kxe4
- 2.f3#
- 1...Kf3!
- 1...Kxe4
- 1.Sexf5?
- 1...Sxf2+
- 2.Rfxf2#
- 2.Rdxf2#
- 1...Rd6
- 2.Sxh5#
- 1...Re6
- 2.Sxh5#
- 2.Sxe6#
- 1...Rf6
- 2.Sxh5#
- 1...Rg6
- 2.Sxh5#
- 1...Rh7
- 2.Se6#
- 1...Rh8
- 2.Se6#
- 1...Sb2
- 2.Rxc2#
- 1...Sc3
- 2.Rxc2#
- 1...Sde3
- 2.fxe3#
- 1...Sa1
- 2.Rdxd1#
- 1...Se1
- 2.Rxd1#
- 1...Sa3
- 2.Rdxd1#
- 1...Sce3
- 2.fxe3#
- 1...Sb4
- 2.Rdxd1#
- 1...Sd4
- 2.Rdxd1#
- 1...cxd5!
- 1...Sxf2+
- 1.Rdxd1?
- threat
- 2.Sxc2#
- 1...Sxe3
- 2.Bxe3#
- 2.fxe3#
- 1...Sa1
- 2.Sc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sexf5#
- 1...Se1
- 2.Sc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sexf5#
- 1...Sa3
- 2.Sc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sexf5#
- 1...Sb4
- 2.Sc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sexf5#
- 1...Sd4
- 2.Sc2#
- 2.Sc4#
- 2.Sg4#
- 2.Sexf5#
- 1...fxe4!
- threat
- 1.Rxc2?
- threat
- 2.Sxd1#
- 1...Sxf2+
- 2.Rfxf2#
- 2.Rcxf2#
- 1...Sxe3
- 2.Bxe3#
- 2.fxe3#
- 1...Sb2
- 2.Sd1#
- 2.Sc4#
- 2.Sg4#
- 2.Sexf5#
- 1...Sc3
- 2.Sd1#
- 2.Sc4#
- 2.Sg4#
- 2.Sexf5#
- 1...fxe4!
- threat
- 1.Re2?
- 1...Sxf2+
- 2.Rfxf2#
- 2.Rexf2#
- 1...Sdxe3
- 2.fxe3#
- 1...Scxe3
- 2.fxe3#
- 1...cxd5
- 2.Sxd5#
- 1...Rd6
- 2.Sxh5#
- 1...Re6
- 2.Sxh5#
- 2.Sxe6#
- 1...Rf6
- 2.Sxh5#
- 1...Rg6
- 2.Sxh5#
- 1...Rh7
- 2.Se6#
- 1...Rh8
- 2.Se6#
- 1...Sb2
- 2.Sxc2#
- 1...Sc3
- 2.Sxc2#
- 1...Sa1
- 2.Sxd1#
- 1...Se1
- 2.Sxd1#
- 1...Sa3
- 2.Sxd1#
- 1...Sb4
- 2.Sxd1#
- 1...Sd4
- 2.Sxd1#
- 1...fxe4!
- 1...Sxf2+
- 1.Rd4?
- 1...Sxf2+
- 2.Rxf2#
- 1...Sdxe3
- 2.fxe3#
- 1...Scxe3
- 2.fxe3#
- 1...Sxd4
- 2.Sxd1#
- 1...fxe4
- 2.Rxe4#
- 1...cxd5
- 2.Sxd5#
- 1...Rd6
- 2.Sxh5#
- 1...Re6
- 2.Sxh5#
- 2.Sxe6#
- 1...Rf6
- 2.Sxh5#
- 1...Rg6
- 2.Sxh5#
- 1...Rh7
- 2.Se6#
- 1...Rh8
- 2.Se6#
- 1...Sb2
- 2.Sxc2#
- 1...Sc3
- 2.Sxc2#
- 1...Sa1
- 2.Sxd1#
- 1...Se1
- 2.Sxd1#
- 1...Sa3
- 2.Sxd1#
- 1...Sb4
- 2.Sxd1#
- 1...exd4!
- 1...Sxf2+
- 1.Sxd1?
- Keys
- 1.Rd3!
- 1...Sxf2+
- 2.Rxf2#
- 1...Sdxe3
- 2.fxe3#
- 1...Scxe3
- 2.fxe3#
- 1...fxe4
- 2.Sg2#
- 1...cxd5
- 2.Sxd5#
- 1...Rd6
- 2.Sxh5#
- 1...Re6
- 2.Sxh5#
- 2.Sxe6#
- 1...Rf6
- 2.Sxh5#
- 1...Rg6
- 2.Sxh5#
- 1...Rh7
- 2.Se6#
- 1...Rh8
- 2.Se6#
- 1...Sb2
- 2.Sxc2#
- 1...Sc3
- 2.Sxc2#
- 1...Sa1
- 2.Sxd1#
- 1...Se1
- 2.Sxd1#
- 1...Sa3
- 2.Sxd1#
- 1...Sb4
- 2.Sxd1#
- 1...Sd4
- 2.Sxd1#
- 1...Sxf2+
- 1.Rd3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 10
- REMOVED MATES = 0
- Sets
- R(h);N_GUARD::S(L),XP(f)
- R(h);N_GUARD::S(L)
- S(a);CHECK,OGATE,P_SPINS(a),XP(E)::R(D),XS(a)
- P(g);XP(K)::S(F),XP(g)
- Tries
- Try
- S(F);XS(a)
- Threat
- B(A)+R(D),XS(b)
- Vars
- S(b);OGATE::R(B)+P(E)DCHECK,XS(b)
- Refutation
- P(e);XP(H)
- Try
- S(F);XS(b)
- Threat
- B(A)+R(D),XS(a)
- Vars
- S(a);OGATE::R(B)+P(E)DCHECK,XS(a)
- Refutation
- P(e);XP(H)
- Try
- S(F);CHECK
- Vars
- K(c);P-FLIGHT,XP(H)::P(E)
- Refutation
- K(c);P-FLIGHT
- Try
- S(F);XP(e)
- Vars
- R(h);N_GUARD::S(L),XP(f)
- R(h);N_GUARD::S(L)
- S(a);N_GUARD::B(A)+R(D),XS(b)
- S(a);OGATE::R(B)+P(E)DCHECK,XS(a)
- S(b);N_GUARD::B(A)+R(D),XS(a)
- S(b);OGATE::R(B)+P(E)DCHECK,XS(b)
- Refutation
- P(g);XP(K)
- Try
- R(D);XS(a)
- Threat
- B(A)+S(F),XS(b)
- Refutation
- P(e);XP(H)
- Try
- R(D);XS(b)
- Threat
- B(A)+S(F),XS(a)
- Refutation
- P(e);XP(H)
- Try
- R(D);
- Vars
- S(a);OGATE,P_SPINS(a),XS(F)::R(B)+P(E)DCHECK,XS(a)
- S(b);OGATE,P_SPINS(b),XS(F)::R(B)+P(E)DCHECK,XS(b)
- P(g);XP(K)::B(A)+S(F),DCHECK,XP(g)
- R(h);N_GUARD::S(L),XP(f)
- R(h);N_GUARD::S(L)
- S(a);N_GUARD::B(A)+S(F),XS(b)
- S(b);N_GUARD::B(A)+S(F),XS(a)
- Refutation
- P(e);XP(H)
- Try
- R(D);
- Vars
- S(a);CHECK,OGATE,P_SPINS(a),XP(E)::R(B),XS(a)
- S(a);OGATE,P_SPINS(a),XS(F)::R(B)+P(E)DCHECK,XS(a)
- S(b);OGATE,P_SPINS(b),XS(F)::R(B)+P(E)DCHECK,XS(b)
- S(b);N_GUARD,XR(D)::B(A)+S(F),XS(a)
- P(e);OGATE,P_SPINP(e),XP(H)::R1(D),XP(e)
- P(g);XP(K)::B(A)+S(F),DCHECK,XP(g)
- R(h);N_GUARD::S(L),XP(f)
- R(h);N_GUARD::S(L)
- S(a);N_GUARD::B(A)+S(F),XS(b)
- S(b);N_GUARD::B(A)+S(F),XS(a)
- Refutation
- P(d);XR(D)
- Try
- Actual
- R(D);
- Vars
- S(a);CHECK,OGATE,P_SPINS(a),XP(E)::R(B),XS(a)
- S(a);OGATE,P_SPINS(a),XS(F)::R(B)+P(E)DCHECK,XS(a)
- S(b);OGATE,P_SPINS(b),XS(F)::R(B)+P(E)DCHECK,XS(b)
- P(e);SBLOCK,XP(H)::B(A)+S(F),DCHECK
- P(g);XP(K)::B(A)+S(F),DCHECK,XP(g)
- R(h);N_GUARD::S(L),XP(f)
- R(h);N_GUARD::S(L)
- S(a);N_GUARD::B(A)+S(F),XS(b)
- S(b);N_GUARD::B(A)+S(F),XS(a)
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).