MESON Chess Problem Database
Problem Display
PID: 101323 (8/4K3/p2pQ3/P2p2n1/bP1p3N/1p2b3/1P1k1n2/NBR1R3 w - - 0 1)
Beach, Lennox F
Good Companions, 1920
#2
10 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bf4
- 2.Qe2#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sd1
- 2.Rcxd1#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfh3
- 2.Rcd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sf3
- 2.Sxf3#
- 1...Sgh3
- 2.Sf3#
- 1...Sge4
- 2.Sf3#
- 1...Sxe6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...d3
- 2.Qxe3#
- 1...Bf4
- Tries
- 1.Bc2?
- 1...Sxe6
- 2.Sf3#
- 1...Sd1
- 2.Rcxd1#
- 1...Sf3
- 2.Sxf3#
- 1...Bf4
- 2.Qe2#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfh3
- 2.Rcd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sgh3
- 2.Sf3#
- 1...Sge4
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...d3
- 2.Qxe3#
- 1...bxc2!
- 1...Sxe6
- 1.Bf5?
- 1...Sxe6
- 2.Sf3#
- 1...Sd1
- 2.Rcxd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sf3
- 2.Sxf3#
- 1...Bf4
- 2.Qe2#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfh3
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sgh3
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...d3
- 2.Qxe3#
- 1...Sge4!
- 1...Sxe6
- 1.Bg6?
- 1...Sxe6
- 2.Sf3#
- 1...Sd1
- 2.Rcxd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sf3
- 2.Sxf3#
- 1...Bf4
- 2.Qe2#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfh3
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sgh3
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...d3
- 2.Qxe3#
- 1...Sge4!
- 1...Sxe6
- 1.Qh3?
- 1...Sfxh3
- 2.Rcd1#
- 1...Sgxh3
- 2.Sf3#
- 1...Sd1
- 2.Rcxd1#
- 1...Sf3
- 2.Sxf3#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sge4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...d3
- 2.Qxe3#
- 1...Bf4!
- 1...Sfxh3
- 1.Qg4?
- threat
- 2.Qe2#
- 1...Sxg4
- 2.Rcd1#
- 1...Sd1
- 2.Rcxd1#
- 2.Rexd1#
- 2.Qxd1#
- 1...Sf3
- 2.Sxf3#
- 1...Bb5
- 2.Sxb3#
- 1...d3!
- threat
- 1.Qf5?
- 1...Sd1
- 2.Rcxd1#
- 1...Sf3
- 2.Sxf3#
- 1...Bf4
- 2.Qxf4#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 2.Qd3#
- 1...Sd3
- 2.Rcd1#
- 2.Qxd3#
- 1...Sfh3
- 2.Rcd1#
- 2.Qd3#
- 1...Sfe4
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 2.Qd3#
- 1...Sgh3
- 2.Sf3#
- 1...Sge4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...d3!
- 1...Sd1
- 1.Qf7?
- 1...Sxf7
- 2.Sf3#
- 1...Sd1
- 2.Rcxd1#
- 1...Bf4
- 2.Qxf4#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfh3
- 2.Rcd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sf3
- 2.Sxf3#
- 1...Sgh3
- 2.Sf3#
- 1...Sge4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...d3!
- 1...Sxf7
- 1.Qc8?
- 1...Sd1
- 2.Rcxd1#
- 1...d3
- 2.Qc3#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfh3
- 2.Rcd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sf3
- 2.Sxf3#
- 1...Sgh3
- 2.Sf3#
- 1...Sge4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...Bf4!
- 1...Sd1
- 1.Qe4?
- 1...Sfxe4
- 2.Rcd1#
- 1...Sgxe4
- 2.Sf3#
- 1...Sd1
- 2.Rcxd1#
- 1...d3
- 2.Qxe3#
- 1...Bf4
- 2.Qe2#
- 2.Qxf4#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 2.Qd3#
- 1...Sd3
- 2.Rcd1#
- 2.Qxd3#
- 1...Sfh3
- 2.Rcd1#
- 2.Qd3#
- 1...Sg4
- 2.Rcd1#
- 2.Qd3#
- 1...Sf3
- 2.Sxf3#
- 1...Sgh3
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...dxe4!
- 1...Sfxe4
- 1.Qe5?
- 1...Sd1
- 2.Rcxd1#
- 1...d3
- 2.Qc3#
- 2.Qxe3#
- 1...Bf4
- 2.Qxf4#
- 2.Qe2#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfh3
- 2.Rcd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sf3
- 2.Sxf3#
- 1...Sgh3
- 2.Sf3#
- 1...Sge4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...dxe5!
- 1...Sd1
- 1.Qxd6?
- 1...Sd1
- 2.Rcxd1#
- 1...Bf4
- 2.Qxf4#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfh3
- 2.Rcd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sf3
- 2.Sxf3#
- 1...Sgh3
- 2.Sf3#
- 1...Sge4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...d3!
- 1...Sd1
- 1.b5?
- 1...Bxb5
- 2.Sxb3#
- 1...Sxe6
- 2.Sf3#
- 1...Sd1
- 2.Rcxd1#
- 1...d3
- 2.Qxe3#
- 1...Bf4
- 2.Qe2#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfh3
- 2.Rcd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sf3
- 2.Sxf3#
- 1...Sgh3
- 2.Sf3#
- 1...Sge4
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...axb5!
- 1...Bxb5
- 1.Bc2?
- Keys
- 1.Qf6!
- 1...Sd1
- 2.Rcxd1#
- 1...d3
- 2.Qc3#
- 1...Bf4
- 2.Qxf4#
- 1...Bb5
- 2.Sxb3#
- 1...Bc6
- 2.Sxb3#
- 1...Bd7
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 1...Sh1
- 2.Rcd1#
- 1...Sd3
- 2.Rcd1#
- 1...Sfh3
- 2.Rcd1#
- 1...Sfe4
- 2.Rcd1#
- 1...Sg4
- 2.Rcd1#
- 1...Sf3
- 2.Sxf3#
- 1...Sgh3
- 2.Sf3#
- 1...Sge4
- 2.Sf3#
- 1...Se6
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sh7
- 2.Sf3#
- 1...Sd1
- 1.Qf6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(d);OGATE::QAR1(I)
- B(e);N_GUARD::S(A),XP(c)
- S(b);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD,XQ(I)::S(G)
- P(f);N_GUARD::QAB1(I),XB(d)
- Tries
- Try
- B(B);
- Vars
- S(h);N_GUARD,XQ(I)::S(G)
- S(b);N_GUARD::R1(C),XS(b)
- S(h);N_GUARD::S(G),XS(h)
- B(d);OGATE::QAR1(I)
- B(e);N_GUARD::S(A),XP(c)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G)
- P(f);N_GUARD::QAB1(I),XB(d)
- Refutation
- P(c);XB(B)
- Try
- B(B);
- Vars
- S(h);N_GUARD,XQ(I)::S(G)
- S(b);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G),XS(h)
- B(d);OGATE::QAR1(I)
- B(e);N_GUARD::S(A),XP(c)
- S(h);N_GUARD::S(G)
- P(f);N_GUARD::QAB1(I),XB(d)
- Refutation
- S(h);
- Try
- B(B);
- Vars
- S(h);N_GUARD,XQ(I)::S(G)
- S(b);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G),XS(h)
- B(d);OGATE::QAR1(I)
- B(e);N_GUARD::S(A),XP(c)
- S(h);N_GUARD::S(G)
- P(f);N_GUARD::QAB1(I),XB(d)
- Refutation
- S(h);
- Try
- Q(I);
- Vars
- S(b);N_GUARD,XQ(I)::R1(C)
- S(h);N_GUARD,XQ(I)::S(G)
- S(b);N_GUARD::R1(C),XS(b)
- S(h);N_GUARD::S(G),XS(h)
- B(e);N_GUARD::S(A),XP(c)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G)
- P(f);N_GUARD::QAB1(I),XB(d)
- Refutation
- B(d);
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- S(b);N_GUARD,XQ(I)::R1(C)
- S(h);N_GUARD::S(G),XS(h)
- B(e);N_GUARD::S(A),XP(c)
- Refutation
- P(f);
- Try
- Q(I);
- Vars
- S(b);N_GUARD::R1(C),XS(b)
- S(h);N_GUARD::S(G),XS(h)
- B(d);OGATEB::QAB(I),XB(d)
- B(e);N_GUARD::S(A),XP(c)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G)
- Refutation
- P(f);
- Try
- Q(I);
- Vars
- S(h);N_GUARD,XQ(I)::S(G)
- S(b);N_GUARD::R1(C),XS(b)
- B(d);OGATEB::QAB(I),XB(d)
- B(e);N_GUARD::S(A),XP(c)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- Refutation
- P(f);
- Try
- Q(I);
- Vars
- S(b);N_GUARD::R1(C),XS(b)
- P(f);N_GUARD::QAB1(I)
- B(e);N_GUARD::S(A),XP(c)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- Refutation
- B(d);
- Try
- Q(I);
- Vars
- S(b);N_GUARD,XQ(I)::R1(C)
- S(h);N_GUARD,XQ(I)::S(G)
- S(b);N_GUARD::R1(C),XS(b)
- P(f);N_GUARD::QAB1(I),XB(d)
- B(e);N_GUARD::S(A),XP(c)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- Refutation
- P(g);XQ(I)
- Try
- Q(I);
- Vars
- S(b);N_GUARD::R1(C),XS(b)
- B(e);N_GUARD::S(A),XP(c)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- Refutation
- P(j);XQ(I)
- Try
- Q(I);XP(j)
- Vars
- S(b);N_GUARD::R1(C),XS(b)
- B(d);OGATEB::QAB(I),XB(d)
- B(e);N_GUARD::S(A),XP(c)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- Refutation
- P(f);
- Try
- P(F);
- Vars
- B(e);N_GUARD,XP(F)::S(A),XP(c)
- S(h);N_GUARD,XQ(I)::S(G)
- S(b);N_GUARD::R1(C),XS(b)
- P(f);N_GUARD::QAB1(I),XB(d)
- B(d);OGATE::QAR1(I)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- Refutation
- P(i);XP(F)
- Try
- Actual
- Q(I);
- Vars
- S(b);N_GUARD::R1(C),XS(b)
- P(f);OGATE::QAB1(I)
- B(d);OGATEB::QAB(I),XB(d)
- B(e);N_GUARD::S(A),XP(c)
- S(b);N_GUARD::R1(C)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(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).