MESON Chess Problem Database
Problem Display
PID: 91216 (3R1Nn1/6r1/3p3r/BPknPQ2/P2p1R2/1KP5/2p1Pb2/2Nq3B w - - 0 1)
Schneider, Michael
Die Schwalbe, 1960
#2
13 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sd3#
- 1...Qf1
- 2.Sd3#
- 1...Qg1
- 2.Sd3#
- 1...Qxh1
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Rxh1
- 2.Se6#
- 1...Rh2
- 2.Se6#
- 1...Rh3
- 2.Se6#
- 1...Rh4
- 2.Se6#
- 1...Rh5
- 2.Se6#
- 1...Re6
- 2.Sxe6#
- 1...Rhh7
- 2.Se6#
- 1...Rh8
- 2.Se6#
- 1...Rg1
- 2.Sd7#
- 1...Rg2
- 2.Sd7#
- 1...Rg3
- 2.Sd7#
- 1...Rg4
- 2.Sd7#
- 1...Rg5
- 2.Sd7#
- 1...Rg6
- 2.Sd7#
- 1...Rd7
- 2.Sxd7#
- 1...Sb4
- 2.cxb4#
- 1...Sb6
- 2.Bb4#
- 1...Sdf6
- 2.Se6#
- 1...Sde7
- 2.Sd7#
- 1...Sgf6
- 2.Se6#
- 1...Sge7
- 2.Sd7#
- 1...dxc3
- 2.Rc4#
- 1...d3
- 2.Rc4#
- 1...dxe5
- 2.Rxd5#
- 1...Qe1
- Tries
- 1.Rxd6?
- threat
- 2.Rxd5#
- 1...Qxh1
- 2.Sd3#
- 1...Rxh1
- 2.Se6#
- 2.Rc6#
- 1...Sxc3
- 2.Bb4#
- 2.Bb6#
- 1...Sxf4
- 2.Bb4#
- 2.Bb6#
- 1...dxc3
- 2.Rc4#
- 1...Rg2
- 2.Sd7#
- 1...Rd7
- 2.Sxd7#
- 1...Se3
- 2.Bb4#
- 2.Bb6#
- 1...Sb4
- 2.Bxb4#
- 2.Bb6#
- 2.cxb4#
- 1...Sb6
- 2.Bb4#
- 2.Bxb6#
- 1...Sdf6
- 2.Se6#
- 2.Bb4#
- 2.Bb6#
- 2.Rc6#
- 1...Sc7
- 2.Bb4#
- 2.Bb6#
- 1...Sde7
- 2.Sd7#
- 2.Bb4#
- 2.Bb6#
- 1...Sgf6
- 2.Se6#
- 2.Rc6#
- 1...Sge7
- 2.Sd7#
- 1...Rxd6!
- threat
- 1.Rc8+?
- 1...Rc7
- 2.Sd7#
- 1...Sc7!
- 1...Rc7
- 1.Qd3?
- threat
- 2.Qc4#
- 1...Qxd3
- 2.Sxd3#
- 1...Se3
- 2.cxd4#
- 1...Sb6
- 2.Bb4#
- 1...Qxe2!
- threat
- 1.Qe6?
- threat
- 2.Qxd5#
- 1...Qxh1
- 2.Sd3#
- 1...Rxh1
- 2.Qxd6#
- 1...Rxe6
- 2.Sxe6#
- 1...Sxc3
- 2.Qc4#
- 1...Sxf4
- 2.Qc4#
- 1...dxc3
- 2.Rc4#
- 1...Rg2
- 2.Sd7#
- 1...Sb4
- 2.Qc4#
- 2.cxb4#
- 1...Sb6
- 2.Bb4#
- 1...Sdf6
- 2.Qc4#
- 2.Qxd6#
- 1...Sc7
- 2.Qc4#
- 1...Sde7
- 2.Sd7#
- 2.Qc4#
- 1...Sgf6
- 2.Qxd6#
- 1...Sge7
- 2.Sd7#
- 1...Se3!
- threat
- 1.Qd7?
- threat
- 2.Qc6#
- 1...Rxd7
- 2.Sxd7#
- 1...dxe5
- 2.Qxd5#
- 1...Sb4
- 2.cxb4#
- 1...Sde7
- 2.Qa7#
- 1...Sge7!
- threat
- 1.Qc8+?
- 1...Rc7
- 2.Sd7#
- 1...Sc7!
- 1...Rc7
- 1.Qf7?
- threat
- 2.Sd7#
- 2.Qxd5#
- 1...Qxh1
- 2.Sd3#
- 2.Sd7#
- 1...Rxh1
- 2.Se6#
- 2.Sd7#
- 1...Sxc3
- 2.Sd7#
- 2.Rc8#
- 2.Qc4#
- 1...Sxf4
- 2.Sd7#
- 2.Rc8#
- 2.Qc4#
- 1...dxc3
- 2.Sd7#
- 2.Rc4#
- 1...dxe5
- 2.Rxd5#
- 2.Qxd5#
- 1...Sc7
- 2.Sd7#
- 2.Qc4#
- 1...Re6
- 2.Sxe6#
- 2.Sd7#
- 1...Rg2
- 2.Sd7#
- 1...Se3
- 2.Sd7#
- 2.Rc8#
- 1...Sb4
- 2.Sd7#
- 2.Qc4#
- 2.cxb4#
- 1...Sb6
- 2.Bb4#
- 1...Sdf6
- 2.Se6#
- 2.Rc8#
- 2.Qc4#
- 1...Sde7
- 2.Sd7#
- 2.Qc4#
- 1...Sgf6
- 2.Se6#
- 1...Sge7
- 2.Sd7#
- 1...Rxf7!
- threat
- 1.Rxd6?
- Keys
- 1.Qe4!
- threat
- 2.Qxd5#
- 1...Qxh1
- 2.Sd3#
- 1...Rxh1
- 2.Se6#
- 1...Sxc3
- 2.Qc6#
- 1...Sxf4
- 2.Qc6#
- 1...dxc3
- 2.Qc4#
- 1...Rg2
- 2.Sd7#
- 1...Se3
- 2.Qc6#
- 1...Sb4
- 2.cxb4#
- 1...Sb6
- 2.Bb4#
- 2.Qc6#
- 1...Sdf6
- 2.Se6#
- 2.Qc6#
- 1...Sc7
- 2.Qc6#
- 1...Sde7
- 2.Sd7#
- 1...Sgf6
- 2.Se6#
- 1...Sge7
- 2.Sd7#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 21
- Sets
- Q(a);N_GUARD::S(A)
- Q(a);N_GUARD,XB(B)::S(A)
- Q(a);N_GUARD,P_PINP(E)::S(A),XQ(a)
- R(h);N_GUARD,XB(B)::S(M)
- R(h);N_GUARD::S(M)
- R(h);N_GUARD,P_PINP(E)::S(M)
- R(h);N_GUARD::S(M),XR(h)
- R(i);N_GUARD::S(M)
- R(i);N_GUARD,P_PINP(E)::S(M)
- R(i);N_GUARD::S(M),XR(i)
- S(f);OGATE::P(E),XS(f)
- S(f);N_GUARD,SBLOCK::B(H)
- S(f);S_CUTR(h)::S(M)
- S(f);S_CUTR(i)::S(M)
- S(j);S_CUTR(h)::S(M)
- S(j);S_CUTR(i)::S(M)
- P(d);OGATE,XP(E)::R1(G)
- P(d);OGATE::R1(G)
- P(g);OGATE,XP(J)::R1(L),XS(f)
- Tries
- Try
- R(L);XP(g)
- Threat
- R1(L),XS(f)
- Vars
- Q(a);N_GUARD,XB(B)::S(A)
- P(d);OGATE,XP(E)::R1(G)
- R(i);N_GUARD::S(M)
- R(i);N_GUARD::S(M),XR(i)
- S(j);S_CUTR(i)::S(M)
- Refutation
- R(h);XR(L)
- Try
- R(L);CHECK
- Vars
- R(i);P_SPINR(i)::S(M)
- Refutation
- S(f);P_SPINS(f)
- Try
- Q(K);
- Threat
- QAR1(K)
- Vars
- Q(a);P_PINP(E),XQ(K)::S(A),XQ(a)
- S(f);S_CUTB(c)::P(E),XP(d)
- S(f);N_GUARD,SBLOCK::B(H)
- Refutation
- Q(a);XP(C)
- Try
- Q(K);
- Threat
- QAR1(K),XS(f)
- Vars
- Q(a);N_GUARD,XB(B)::S(A)
- R(h);N_GUARD,XB(B)::QAB1(K),XP(g)
- R(h);XQ(K)::S(M),XR(h)
- S(f);OGATE,XP(E)::QAR1(K)
- S(f);OGATE,XR(G)::QAR1(K)
- P(d);OGATE,XP(E)::R1(G)
- R(i);N_GUARD::S(M)
- S(f);N_GUARD,SBLOCK::B(H)
- S(f);OGATE::QAR1(K)
- S(j);S_CUTR(h)::QAB1(K),XP(g)
- S(j);S_CUTR(i)::S(M)
- Refutation
- S(f);
- Try
- Q(K);
- Threat
- QAR1(K)
- Vars
- R(i);XQ(K)::S(M),XR(i)
- P(g);OGATE,XP(J)::QAR1(K),XS(f)
- S(f);OGATE::P(E),XS(f)
- S(f);N_GUARD,S_CUTR(i)::QAB(K)
- Refutation
- S(j);
- Try
- Q(K);CHECK
- Vars
- R(i);P_SPINR(i)::S(M)
- Refutation
- S(f);P_SPINS(f)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- R(i);::S(M)
- S(f);N_GUARD,SBLOCK::B(H)
- S(j);S_CUTR(h)::S(M)
- S(j);::S(M)
- Refutation
- R(i);XQ(K)
- Try
- Actual
- Q(K);
- Threat
- QAR1(K),XS(f)
- Vars
- Q(a);N_GUARD,XB(B)::S(A)
- R(h);N_GUARD,XB(B)::S(M)
- S(f);OGATE,XP(E)::QAR1(K)
- S(f);OGATE,XR(G)::QAR1(K)
- P(d);OGATE,XP(E)::QAR1(K)
- R(i);N_GUARD::S(M)
- S(f);OGATE::QAR1(K)
- S(f);OGATE::P(E),XS(f)
- S(f);S_CUTR(i)::S(M)
- S(j);S_CUTR(h)::S(M)
- S(j);S_CUTR(i)::S(M)
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).