MESON Chess Problem Database
Problem Display
PID: 176248 (8/1p2Q1p1/pn6/2RP2p1/3kBp2/NK1pRp1q/2p2n1r/2B3N1 w - - 0 1)
Schulz, Hermann
Schach-Echo, 1973
#2
9 + 13
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sxf3#
- 1...Qf5
- 2.Sxf3#
- 1...Qe6
- 2.Sxf3#
- 1...Qd7
- 2.Sxf3#
- 1...Qc8
- 2.Sxf3#
- 1...Qh4
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Qh7
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 1...Sd1
- 2.Rxd3#
- 1...Sh1
- 2.Rxd3#
- 1...Sxe4
- 2.Rxe4#
- 1...Sg4
- 2.Rxd3#
- 1...Sa4
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Sxd5
- 2.Rc4#
- 2.Rxd5#
- 1...Sd7
- 2.Rc4#
- 1...Sa8
- 2.Rc4#
- 1...Sc8
- 2.Rc4#
- 1...d2
- 2.Sxc2#
- 1...fxe3
- 2.Bb2#
- 1...a5
- 2.Sb5#
- 1...Qf1
- Tries
- 1.Kb4?
- threat
- 2.Qxg7#
- 1...Sxd5+
- 2.Rxd5#
- 1...Sxe4
- 2.Rxe4#
- 2.Qxe4#
- 1...fxe3
- 2.Bb2#
- 1...Qe6
- 2.Sxf3#
- 1...d2
- 2.Sxc2#
- 1...Qf5
- 2.Sxf3#
- 1...Qd7
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Qh7
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 1...Sg4
- 2.Rxd3#
- 1...Sc4
- 2.Rxc4#
- 1...Sd7
- 2.Rc4#
- 1...g6
- 2.Qf6#
- 2.Qg7#
- 1...a5+!
- threat
- 1.Se2+?
- 1...dxe2
- 2.Sxc2#
- 1...fxe2!
- 1...dxe2
- 1.Sc4?
- threat
- 2.Bb2#
- 1...Sxe4
- 2.Rxe4#
- 1...Sxc4
- 2.Rxc4#
- 1...Sxd5
- 2.Rxd5#
- 1...Sd1
- 2.Rxd3#
- 1...Sa4!
- threat
- 1.Bxf3?
- threat
- 2.Bb2#
- 1...Sxd5
- 2.Rc4#
- 2.Rxd5#
- 1...Sd1
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sa4
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Qe6!
- threat
- 1.Re1?
- threat
- 2.Bb2#
- 1...Sxe4
- 2.Rxe4#
- 1...Sxd5
- 2.Rc4#
- 2.Rxd5#
- 1...Sa4
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Sd1!
- threat
- 1.Rxc2?
- threat
- 2.Qxg7#
- 1...Sxe4
- 2.Qxe4#
- 1...Sxd5
- 2.Rc4#
- 1...dxc2
- 2.Sxc2#
- 1...fxe3
- 2.Bb2#
- 1...Qe6
- 2.Sxf3#
- 1...Qf5
- 2.Sxf3#
- 1...Qd7
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Qh7
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 1...Sg4
- 2.Rxd3#
- 1...Sc4
- 2.Rxc4#
- 1...Sd7
- 2.Rc4#
- 1...g6
- 2.Qf6#
- 2.Qg7#
- 1...d2!
- threat
- 1.Rc3?
- threat
- 2.Qxg7#
- 1...Sxe4
- 2.Rcxd3#
- 2.Rexd3#
- 2.Qxe4#
- 1...Sxd5
- 2.Rc4#
- 1...Qe6
- 2.Sxf3#
- 1...Qf5
- 2.Sxf3#
- 1...Qd7
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Qh7
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 1...Sg4
- 2.Rcxd3#
- 2.Rexd3#
- 1...Sc4
- 2.Rxc4#
- 1...Sd7
- 2.Rc4#
- 1...g6
- 2.Qf6#
- 2.Qg7#
- 1...fxe3!
- threat
- 1.Ra5?
- threat
- 2.Qxg7#
- 1...Sxe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Sxd5
- 2.Rxd5#
- 1...fxe3
- 2.Bb2#
- 1...Qe6
- 2.Sxf3#
- 1...d2
- 2.Sxc2#
- 1...Qf5
- 2.Sxf3#
- 1...Qd7
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Qh7
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 1...Sg4
- 2.Rxd3#
- 1...Sd7
- 2.Ra4#
- 1...g6
- 2.Qf6#
- 2.Qg7#
- 1...Sc4!
- threat
- 1.Rb5?
- threat
- 2.Qxg7#
- 1...Sxe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Sxd5
- 2.Rxd5#
- 1...fxe3
- 2.Bb2#
- 1...axb5
- 2.Sxb5#
- 1...Qe6
- 2.Sxf3#
- 1...d2
- 2.Sxc2#
- 1...Qf5
- 2.Sxf3#
- 1...Qd7
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Qh7
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 1...Sg4
- 2.Rxd3#
- 1...Sd7
- 2.Rb4#
- 1...g6
- 2.Qf6#
- 2.Qg7#
- 1...Sc4!
- threat
- 1.Rc6?
- threat
- 2.Qxg7#
- 1...Sxe4
- 2.Qxe4#
- 1...Sxd5
- 2.Rc4#
- 1...fxe3
- 2.Bb2#
- 1...Qe6
- 2.Sxf3#
- 1...d2
- 2.Sxc2#
- 1...Sc4
- 2.Rxc4#
- 1...Qf5
- 2.Sxf3#
- 1...Qd7
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Qh7
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 1...Sg4
- 2.Rxd3#
- 1...Sd7
- 2.Rc4#
- 1...g6
- 2.Qf6#
- 2.Qg7#
- 1...bxc6!
- threat
- 1.Rc8?
- threat
- 2.Qxg7#
- 1...Qxc8
- 2.Sxf3#
- 1...Sxe4
- 2.Qxe4#
- 1...Sxd5
- 2.Rc4#
- 1...fxe3
- 2.Bb2#
- 1...Qe6
- 2.Sxf3#
- 1...d2
- 2.Sxc2#
- 1...Sc4
- 2.Rxc4#
- 1...Qf5
- 2.Sxf3#
- 1...Qd7
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Qh7
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 1...Sg4
- 2.Rxd3#
- 1...Sd7
- 2.Rc4#
- 1...g6
- 2.Qf6#
- 2.Qg7#
- 1...Sxc8!
- threat
- 1.Kb4?
- Keys
- 1.Rc7!
- threat
- 2.Qxg7#
- 1...Sxe4
- 2.Qxe4#
- 1...Sxd5
- 2.Rc4#
- 1...fxe3
- 2.Bb2#
- 1...Qe6
- 2.Sxf3#
- 1...d2
- 2.Sxc2#
- 1...Sc4
- 2.Rxc4#
- 1...Qf5
- 2.Sxf3#
- 1...Qd7
- 2.Sxf3#
- 1...Qh6
- 2.Sxf3#
- 1...Qh7
- 2.Sxf3#
- 1...Qh8
- 2.Sxf3#
- 1...Sg4
- 2.Rxd3#
- 1...Sd7
- 2.Rc4#
- 1...g6
- 2.Qf6#
- 2.Qg7#
- threat
- 1.Rc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(f);N_GUARD::S(B),XP(e)
- Q(f);N_GUARD,P_PINP(H)::S(B),XP(e)
- S(b);N_GUARD::R1(E),XP(d)
- S(b);OGATE,XB(F)::R1(E),XS(b)
- S(k);N_GUARD::R1(G)
- S(k);N_GUARD::R1(G),XS(k)
- P(d);N_GUARD::S(C),XP(a)
- P(h);SBLOCK,XR(E)::B(A)
- P(j);N_GUARD::S(C)
- Tries
- Try
- K(D);P-FLIGHT
- Threat
- QAB(I),XP(m)
- Vars
- S(k);CHECK,OGATE,XP(H)::R1(G),XS(k)
- P(h);SBLOCK,XR(E)::B(A)
- Q(f);N_GUARD::S(B),XP(e)
- P(d);N_GUARD::S(C),XP(a)
- S(b);N_GUARD::R1(E),XP(d)
- S(k);N_GUARD::R1(G),XS(k)
- S(k);N_GUARD::R1(G)
- Refutation
- P(j);CHECK
- Try
- S(B);CHECK
- Vars
- P(d);XS(B)::S(C),XP(a)
- Refutation
- P(e);XS(B)
- Try
- S(C);
- Threat
- B(A)
- Vars
- S(b);OGATE,XB(F)::R1(E),XS(b)
- S(k);OGATE,XS(C)::R1(G),XS(k)
- S(k);OGATE,XP(H)::R1(G),XS(k)
- S(b);N_GUARD::R1(E),XP(d)
- Refutation
- S(k);
- Try
- B(F);XP(e)
- Threat
- B(A)
- Vars
- S(b);N_GUARD::R1(E)
- S(b);N_GUARD::R1(E),XS(b)
- S(k);N_GUARD::R1(G)
- S(k);N_GUARD::R1(G),XS(k)
- Refutation
- Q(f);P_PINP(H)
- Try
- R(E);
- Threat
- B(A)
- Vars
- S(b);OGATE,XB(F)::R1(E),XS(b)
- S(k);N_GUARD::R1(G)
- S(k);N_GUARD::R1(G),XS(k)
- Refutation
- S(b);
- Try
- R(G);XP(a)
- Threat
- QAB(I),XP(m)
- Vars
- S(b);OGATE,XB(F)::QAR1(I),XS(b)
- S(k);N_GUARD,XP(H)::R1(G)
- P(d);XR(G)::S(C),XP(d)
- P(h);SBLOCK,XR(E)::B(A)
- Q(f);N_GUARD,P_PINP(H)::S(B),XP(e)
- Q(f);N_GUARD::S(B),XP(e)
- S(b);N_GUARD::R1(E),XP(d)
- S(k);N_GUARD::R1(G),XS(k)
- S(k);N_GUARD::R1(G)
- Refutation
- P(d);
- Try
- R(G);
- Threat
- QAB(I),XP(m)
- Vars
- S(k);N_GUARD,XP(H)::R1(G)
- Q(f);N_GUARD,P_PINP(H)::S(B),XP(e)
- Q(f);N_GUARD::S(B),XP(e)
- S(k);N_GUARD::R1(G),XS(k)
- S(k);N_GUARD::R1(G)
- Refutation
- P(h);XR(E)
- Try
- R(G);
- Threat
- QAB(I),XP(m)
- Vars
- S(k);OGATE,XP(H)::R1(G),XS(k)
- P(h);SBLOCK,XR(E)::B(A)
- Q(f);N_GUARD,P_PINP(H)::S(B),XP(e)
- P(d);N_GUARD::S(C),XP(a)
- Q(f);N_GUARD::S(B),XP(e)
- S(b);N_GUARD::R1(E),XP(d)
- S(k);N_GUARD::R(G)
- Refutation
- S(k);
- Try
- R(G);
- Threat
- QAB(I),XP(m)
- Vars
- S(k);OGATE,XP(H)::R1(G),XS(k)
- P(h);SBLOCK,XR(E)::B(A)
- P(j);XR(G)::S(C),XP(j)
- Q(f);N_GUARD,P_PINP(H)::S(B),XP(e)
- P(d);N_GUARD::S(C),XP(a)
- Q(f);N_GUARD::S(B),XP(e)
- S(b);N_GUARD::R1(E),XP(d)
- S(k);N_GUARD::R(G)
- Refutation
- S(k);
- Try
- R(G);
- Threat
- QAB(I),XP(m)
- Vars
- S(b);OGATE,XB(F)::QAR1(I),XS(b)
- S(k);N_GUARD,XP(H)::R1(G)
- P(h);SBLOCK,XR(E)::B(A)
- Q(f);N_GUARD,P_PINP(H)::S(B),XP(e)
- P(d);N_GUARD::S(C),XP(a)
- S(k);N_GUARD::R1(G),XS(k)
- Q(f);N_GUARD::S(B),XP(e)
- S(b);N_GUARD::R1(E),XP(d)
- S(k);N_GUARD::R1(G)
- Refutation
- P(l);XR(G)
- Try
- R(G);
- Threat
- QAB(I),XP(m)
- Vars
- Q(f);N_GUARD,XR(G)::S(B),XP(e)
- S(b);OGATE,XB(F)::QAR1(I),XS(b)
- S(k);N_GUARD,XP(H)::R1(G)
- P(h);SBLOCK,XR(E)::B(A)
- Q(f);N_GUARD,P_PINP(H)::S(B),XP(e)
- P(d);N_GUARD::S(C),XP(a)
- S(k);N_GUARD::R1(G),XS(k)
- Q(f);N_GUARD::S(B),XP(e)
- S(b);N_GUARD::R1(E),XP(d)
- S(k);N_GUARD::R1(G)
- Refutation
- S(k);XR(G)
- Try
- Actual
- R(G);
- Threat
- QAB(I),XP(m)
- Vars
- S(b);OGATE,XB(F)::QAR1(I),XS(b)
- S(k);N_GUARD,XP(H)::R1(G)
- P(h);SBLOCK,XR(E)::B(A)
- Q(f);N_GUARD,P_PINP(H)::S(B),XP(e)
- P(d);N_GUARD::S(C),XP(a)
- S(k);N_GUARD::R1(G),XS(k)
- Q(f);N_GUARD::S(B),XP(e)
- S(b);N_GUARD::R1(E),XP(d)
- S(k);N_GUARD::R1(G)
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).