MESON Chess Problem Database
Problem Display
PID: 45814 (3n4/1pNB2RK/7n/r1p5/2PkpB1N/5p2/1PQbq3/8 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Deutsche Schachblatter, 1969-1970
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sb5#
- 1...Ra2
- 2.Sb5#
- 1...Ra3
- 2.Sb5#
- 1...Ra4
- 2.Sb5#
- 1...Rb5
- 2.Sxb5#
- 1...Ra6
- 2.Sb5#
- 1...Ra7
- 2.Sb5#
- 1...Ra8
- 2.Sb5#
- 1...Bc1
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Be3
- 2.Qc3#
- 1...Bxf4
- 2.Qc3#
- 1...Sg4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Shf7
- 2.Sf5#
- 1...Sg8
- 2.Sf5#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sdf7
- 2.Se6#
- 1...Ra1
- Tries
- 1.Bh3?
- threat
- 2.Rd7#
- 1...Bxf4
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Ra6
- 2.Sb5#
- 1...Sf5
- 2.Sxf5#
- 1...Shf7
- 2.Sf5#
- 1...Sdf7
- 2.Se6#
- 1...Qxc4!
- threat
- 1.Ba4?
- threat
- 2.Rd7#
- 1...Bxf4
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Ra6
- 2.Sb5#
- 1...Sf5
- 2.Sxf5#
- 1...Shf7
- 2.Sf5#
- 1...Sdf7
- 2.Se6#
- 1...Qxc4!
- threat
- 1.Bg4?
- threat
- 2.Rd7#
- 1...Bxf4
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Ra6
- 2.Sb5#
- 1...Sf5
- 2.Sxf5#
- 1...Shf7
- 2.Sf5#
- 1...Sdf7
- 2.Se6#
- 1...Qxc4!
- threat
- 1.Bb5?
- threat
- 2.Rd7#
- 1...Qxc4
- 2.Qxc4#
- 1...Bxf4
- 2.Qc3#
- 1...Sf5
- 2.Sxf5#
- 1...Shf7
- 2.Sf5#
- 1...Sdf7
- 2.Se6#
- 1...Ra6!
- threat
- 1.Bf5?
- threat
- 2.Rd7#
- 1...Qxc4
- 2.Qxe4#
- 1...Bxf4
- 2.Qc3#
- 1...Sxf5
- 2.Sxf5#
- 1...Bc3
- 2.Qxc3#
- 1...Ra6
- 2.Sb5#
- 1...Sdf7
- 2.Se6#
- 1...Shf7!
- threat
- 1.Be6?
- threat
- 2.Rd7#
- 1...Qxc4
- 2.Qxc4#
- 1...Bxf4
- 2.Qc3#
- 1...Ra6
- 2.Sb5#
- 1...Sf5
- 2.Sxf5#
- 1...Shf7
- 2.Sf5#
- 1...Sdf7!
- threat
- 1.Bc8?
- threat
- 2.Rd7#
- 1...Bxf4
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Ra6
- 2.Sb5#
- 1...Sf5
- 2.Sxf5#
- 1...Shf7
- 2.Sf5#
- 1...Sdf7
- 2.Se6#
- 1...Qxc4!
- threat
- 1.Be8?
- threat
- 2.Rd7#
- 1...Bxf4
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Ra6
- 2.Sb5#
- 1...Sf5
- 2.Sxf5#
- 1...Shf7
- 2.Sf5#
- 1...Sdf7
- 2.Se6#
- 1...Qxc4!
- threat
- 1.Rg5?
- threat
- 2.Rd5#
- 1...Bxf4
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Sf5
- 2.Sxf5#
- 1...Qxc4!
- threat
- 1.Rg6?
- threat
- 2.Rd6#
- 1...Bxf4
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Ra6
- 2.Sb5#
- 1...Sf5
- 2.Sxf5#
- 1...Shf7
- 2.Sf5#
- 1...Se6
- 2.Sxe6#
- 1...Sdf7
- 2.Se6#
- 1...Qxc4!
- threat
- 1.Bh3?
- Keys
- 1.Bc6!
- threat
- 2.Rd7#
- 1...Qxc4
- 2.Qxe4#
- 1...Bxf4
- 2.Qc3#
- 1...Bc3
- 2.Qxc3#
- 1...Sf5
- 2.Sxf5#
- 1...Shf7
- 2.Sf5#
- 1...Sdf7
- 2.Se6#
- threat
- 1.Bc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 14
- Sets
- R(f);N_GUARD::S(F)
- R(f);N_GUARD::S(F),XR(f)
- B(a);N_GUARD::QAB1(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- B(a);N_GUARD,XB(D)::QAB1(B)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- Tries
- Try
- B(G);
- Threat
- R(H)
- Vars
- B(a);N_GUARD,XB(D)::QAB1(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- R(f);N_GUARD::S(F)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- S(j);N_GUARD::S(F)
- Refutation
- Q(b);XP(C)
- Try
- B(G);
- Threat
- R(H)
- Vars
- B(a);N_GUARD,XB(D)::QAB1(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- R(f);N_GUARD::S(F)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- S(j);N_GUARD::S(F)
- Refutation
- Q(b);XP(C)
- Try
- B(G);
- Threat
- R(H)
- Vars
- B(a);N_GUARD,XB(D)::QAB1(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- R(f);N_GUARD::S(F)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- S(j);N_GUARD::S(F)
- Refutation
- Q(b);XP(C)
- Try
- B(G);
- Threat
- R(H)
- Vars
- Q(b);OGATE,XP(C)::QAR1(B),XQ(b)
- B(a);N_GUARD,XB(D)::QAB1(B)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- S(j);N_GUARD::S(F)
- Refutation
- R(f);
- Try
- B(G);
- Threat
- R(H)
- Vars
- Q(b);N_GUARD,SBLOCK,XP(C)::QAR1(B),XP(e)
- B(a);N_GUARD,XB(D)::QAB1(B)
- S(h);XB(G)::S(E),XS(h)
- B(a);N_GUARD::QAB1(B),XB(a)
- R(f);N_GUARD::S(F)
- S(j);N_GUARD::S(F)
- Refutation
- S(h);
- Try
- B(G);
- Threat
- R(H)
- Vars
- Q(b);OGATE,XP(C)::QAR1(B),XQ(b)
- B(a);N_GUARD,XB(D)::QAB1(B)
- R(f);N_GUARD::S(F)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- Refutation
- S(j);
- Try
- B(G);
- Threat
- R(H)
- Vars
- B(a);N_GUARD,XB(D)::QAB1(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- R(f);N_GUARD::S(F)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- S(j);N_GUARD::S(F)
- Refutation
- Q(b);XP(C)
- Try
- B(G);
- Threat
- R(H)
- Vars
- B(a);N_GUARD,XB(D)::QAB1(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- R(f);N_GUARD::S(F)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- S(j);N_GUARD::S(F)
- Refutation
- Q(b);XP(C)
- Try
- R(H);
- Threat
- R1(H)
- Vars
- B(a);N_GUARD,XB(D)::QAB1(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- S(h);N_GUARD::S(E),XS(h)
- Refutation
- Q(b);XP(C)
- Try
- R(H);
- Threat
- R(H)
- Vars
- B(a);N_GUARD,XB(D)::QAB1(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- R(f);N_GUARD::S(F)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- S(j);N_GUARD::S(F),XS(j)
- S(j);N_GUARD::S(F)
- Refutation
- Q(b);XP(C)
- Try
- Actual
- B(G);
- Threat
- R(H)
- Vars
- Q(b);N_GUARD,SBLOCK,XP(C)::QAR1(B),XP(e)
- B(a);N_GUARD,XB(D)::QAB1(B)
- B(a);N_GUARD::QAB1(B),XB(a)
- S(h);N_GUARD::S(E),XS(h)
- S(h);N_GUARD::S(E)
- S(j);N_GUARD::S(F)
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).